Sandip Dhara

Scopus Publications

Role of RGO and RGO-Pt as an attractive electrocatalyst for efficient electrochemical reduction of U(VI) in HNO3
Kuntal Kumar Pal, Chanchal Ghosh, Ramnathaswamy Pandian, Ravi Kumar Yadav, Sandip Dhara
Scientific Reports, 2026
Electrochemical reduction of U(VI) to U(IV) in nitric acid-hydrazine medium is the key process step to successfully achieve the partitioning of Pu from U in the Plutonium Uranium Reduction Extraction (PUREX) process, adopted worldwide in the spent nuclear fuel reprocessing plants. The present method for the electrochemical reduction of U(VI) to U(IV) is not viable for the large-scale production of U(VI) to U(IV) due to its several drawbacks, including very high overpotential and associated hydrogen evolution reaction. In this report, we have shown that the RGO and RGO-Pt could be an attractive electrocatalyst material for the efficient production of U(IV) from U(VI) in HNO3-N2H4 medium with a significantly lower overpotential and greater selectivity. The linear sweep voltammetry (LSV) plots and corresponding Tafel slope analysis have shown that the U reduction over RGO and RGO-Pt takes a completely different pathway as compared to the reduction over Pt and Ti, which is used in commercial plants. Moreover, the cyclic voltametric and electrochemical impedance spectroscopy studies have shown that the hydrogen evolution reaction has also been greatly suppressed over the RGO as compared to the RGO-Pt and Pt rod, thus would improve the faradic efficiency for the U(VI) to U(IV) conversion reaction at higher overpotential.
Evaluation of Strain and Charge-Transfer Doping in Wet-Polymeric Transferred Monolayer MoS2: Implications for Field Effect Transistors
Choudhury Abinash Bhuyan, Akhil R. Warrier, Kishore K. Madapu, Gurpreet Kaur, Krishna Murthy Prabakar, Jagnaseni Pradhan, Shyam K. Sinha, Chanchal Ghosh, Shyamala Rao Polaki, Sandip Dhara
Advanced Materials Technologies, 2026
Unlike as‐grown two‐dimensional (2D) materials, transfer onto arbitrary substrates is essential for integration with semiconductor technologies, deterministic moiré superlattices, and flexible circuitry. However, polymeric residues introduced during the film‐transfer process critically modify strain and doping profiles, impeding device fidelity. We investigate the impact of polymer residues from two widely used 2D film transfer techniques: wet‐chemical etching (polymethyl methacrylate (PMMA)‐based) and surface‐energy‐assisted transfer (polystyrene (PS)‐based) of monolayer MoS 2 (1L‐MoS 2 ) film. We demonstrate that PMMA residues induce biaxial tensile strain (0.07%) and p ‐type doping (hole density ∼0.74 × 10 13 cm −2 ) in residue‐covered regions, while uncovered areas exhibit compressive strain (0.11%). Conversely, PS residues nearly uniformly introduce compressive strain (0.17%) and n ‐type doping (electron density ∼0.89 × 10 13 cm −2 ). Kelvin probe force microscopy confirms polymer‐induced doping, and density functional theory calculations support the experimental observations. Field‐effect transistor measurements validate these doping trends, revealing p ‐type (threshold voltage −9.85 V) and n ‐type (threshold voltage −18.25 V) behavior for 1L‐MoS 2 channel material transferred using PMMA and PS polymers, respectively. The surface‐energy‐assisted transfer method minimizes structural defects, yielding superior device performance with higher ON/OFF ratios (10 6 ) and estimated mobility (10.3 cm 2 V −1 s −1 ). Our results demonstrate that the transfer methodology provides guidelines for optimizing 1L‐MoS 2 for high‐performance optoelectronic applications.
RGO-Pt as an effective catalyst for U(IV) generation under hydrogen
Kuntal Kumar Pal, Ramakrishna Reddy, Chanchal Ghosh, Sandip Dhara
Scientific Reports, 2025
Effective generation of U(IV) from U(VI) is a key step to achieve the partitioning of Pu from U in a spent nuclear fuel reprocessing plant. Reduction under a hydrogen atmosphere is one of the methods for the generation of U(IV) from U(VI) in the presence of a catalyst. Towards this, we have developed novel reduced graphene oxide (RGO)-supported Pt catalysts with varying RGO to Pt ratios. All these catalysts were tested for their catalytic performance for U(VI) to U(IV) reduction under hydrogen, and the performance was compared with the literature-reported SiO2-Pt model catalyst. During the catalytic study, the dual role of Pt was confirmed. It helps the dispersion of materials in the aqueous reaction medium and provides the active surface for the U(VI) reduction reaction using hydrogen. In this regard, Pt nanoclusters with larger sizes were identified for effective catalysis instead of the smallest size.
High performance bilayer 2D V2O5 cathode for Zn-ion and Zn/Li hybrid metal-ion intercalation battery
P. R. Reshma, C. Lakshmanan, Arun K. Prasad, Sandip Dhara
Scientific Reports, 2025
The deteriorating and unevenly distributed Li reserves lead to the quest for Li-ion battery’s alternatives.Hybrid metal-ion batteries are gaining attention as they effectively address the limited diffusion of heavier ions into cathode materials, typically involving the combination of multi and mono-valent metal-ions.The unavailability of high-performance cathode materials restricts the use of heavier ion (e.g., Zn 2+ ) intercalation batteries even though they offer more stable anodic behavior and good charge capacity. In the present study, bilayer V 2 O 5 nanosheets demonstrate exceptional performance as a cathode material for Zn-ion battery and Zn/Li hybrid metal-ion battery facilitating a faster conduit of ion diffusion. The Zn-ion battery and Zn/Lihybrid metal-ion battery showed high specific capacities of 270 and 510 mAh/g with fast charging rates of 0.77, and 0.6 A/g, respectively. Li + is a lighter ion with an ionic radius of 0.76Å compared to the Zn 2+ ion that of 0.74Å and hence has shown higher diffusion into the crystal. The introduction of Li + in the hybrid metal-ion battery showed good cyclic performance with high coulombic efficiency. Thus, this study presents bilayer 2D V 2 O 5 as a favorable cathode material for Zn-ion and Zn/Li hybrid metal-ion batteries for the first time.
Magnetically separable Fe3O4-SiO2/Pt catalyst and its application for uranium reduction
Kuntal Kumar Pal, Ramakrishna Reddy, Chanchal Ghosh, K. Ananthasivan, P. Velavendan, Ramesh L. Gardas, Sandip Dhara
Scientific Reports, 2025
Magnetically separable Fe3O4-SiO2/Pt catalysts with ~ 2% Pt loading have been developed for the generation of U(IV) in HNO3-N2H4 medium, used in the nuclear spent fuel reprocessing. Pt was impregnated in the catalysts via reductive heat treatment. The catalysts were characterized by x-ray diffraction, magnetization measurement, field emission scanning electron microscope and high-resolution transmission electron microscope studies. Catalysts reduced at 200 °C and above temperatures were found to be sufficient for the complete reduction of Pt to its Pt(0) state and were highly efficient for the U(IV) generation via hydrogenation. The U(IV) produced during the experiment was analyzed via the titrimetric and spectroscopic methods. Among all the catalysts prepared under the scope of the study, the highest saturation magnetization was measured for the Fe3O4-10SiO2/Pt catalysts prepared at 200 °C (Fe3O4-10SiO2/Pt(200)). However, the catalyst was least effective towards U(VI) reduction compare to the catalysts prepare at 250 °C (Fe3O4-10SiO2/Pt(250)) and 300 °C (Fe3O4-10SiO2/Pt(300)). The saturation magnetization of Fe3O4-10SiO2/Pt(300) was found to be higher than that of Fe3O4-10SiO2/Pt(250). Finally, Fe3O4-10SiO2/Pt(300) was considered a model catalyst for the detailed characterization, benchmarking and recycling of the catalyst material. Samples with higher silica content were also prepared at 300 °C and assessed for their catalytic activity.
Dynamic spectral control: Incident Angle-Responsive Tuning of High-Purity Structural Colors with Dielectric Nanovoid Arrays
Hrudya Radhakrishnan, Tummaluru Khadar Basha, Junaid Masud Laskar, Gopi Krishnan, Sandip Dhara, Ramanathaswamy Pandian
ACS Photonics, 2025
We demonstrate incident-angle-dependent tuning of visible structural colors using a nanovoid array on a silicon surface fabricated via focused ion beam nanolithography. The method achieves enhanced structural color purity and resolution, as evidenced by sharp peaks in reflectance spectra. A linear correlation between the reflected wavelength and variations in periodicity or incident angle underscores the potential for efficient structural color tuning through manipulation of material properties, instrumental parameters, or both. To explain the observed reflectance shifts, we analyze two key physical phenomena: Mie resonance and light diffraction. Our findings reveal that the nanovoids serve a dual role, acting as Mie-voids while simultaneously functioning as elements in a crossed-diffraction grating system. This dual functionality enables precise spectral control, demonstrating the versatility of nanovoid arrays for optical manipulation. The study offers valuable insights into structural color engineering, paving the way for advancements in photonic and color-tuning technologies.
Nanoscrolled Monolayer MoS2 with High Field-Effect Mobility and Enhanced Photoluminescence Quantum Yield: Implications for Nanoscale Optoelectronic Applications
C. Abinash Bhuyan, Kishore K. Madapu, K. Prabakar, K. Ganesan, S. Amirthapandian, Sandip Dhara
ACS Applied Nano Materials, 2025
We fabricated one-dimensional (1D) nanoscrolled monolayer MoS 2 (1L-MoS 2 ) with superior characteristics from a 1L-MoS 2 film via a facile route using a suitable organic solvent with optimum surface tension, evaporation rate, and dielectric constant to facilitate controlled scroll formation. These nanoscrolls exhibit multilayer morphology while retaining monolayer electronic properties. The nanoscrolls exhibit a direct optical gap and enhanced photoluminescence (PL) quantum yield (QY) stemming from the weak interlayer coupling among constituent layers and are corroborated by low-frequency (LF) Raman and Kelvin probe force microscopy (KPFM) measurements. Furthermore, enhanced photoluminescence emission after annealing uncovers the thermal stability of nanoscrolls. In addition, conducting atomic force microscopy (C-AFM) results demonstrate a significantly higher photocurrent in nanoscrolled 1L-MoS 2 compared to 1L-MoS 2 . Additionally, we also realized significantly improved field-effect transistor device (FET) parameters in nanoscrolled 1L-MoS 2 devices. In nanoscrolled FET devices, we report the highest mobility value of 2400 cm 2 V –1 s –1 reported in any 1L-MoS 2 system. The reported results highlight the potential of nanoscrolled 1L-MoS 2 for advancing electronic and optoelectronic applications at the nanoscale.
Phonon softening mechanisms in power-dependent Raman spectroscopy of low-dimensional materials: The effects of thermal conductivity, absorption coefficients, and defects
Kishore K. Madapu, Sujoy Sen, Sandip Dhara
Journal of Applied Physics, 2025
Power-dependent Raman spectroscopy has been regularly used in material science, especially in low-dimensional materials. The origin of Raman mode frequency changes with increased laser power has not yet been generalized. So far, the phonon mode response to increased laser power has been discussed in the context of a rise in the local temperature due to small particle size and reduced thermal conductivity. Here, we established the origin of phonon mode softening (redshift) in power-dependent Raman spectroscopy. We performed a comprehensive Raman analysis on materials with large variations in thermal conductivity, including Si, Ge, GaAs, diamond, sapphire (Al2O3), ZrO2, SnO2, and ZnO. We proved that thermal conductivity had a negligible role in power-dependent Raman spectroscopy. We exclusively observed phonon shifts with increased laser power in particles of micrometer and nanoscale dimensions with above-bandgap excitations. We found that grain boundaries, external surfaces, and particle size (mass) play a key role in the softening of phonon modes with increased laser power. However, these factors were ineffective in the case of below-bandgap excitations. In addition, we found that defects, which have not been considered until now, play a crucial role in power-dependent Raman spectroscopy.
Probing near-field heating effects on monolayer MoS2 photoluminescence via tip-enhanced Raman spectroscopy
Kishore K. Madapu, C. Abinash Bhuyan, Sandip Dhara
Applied Physics Letters, 2025
The photoluminescence (PL) intensity of monolayer MoS2 is limited by weak optical absorption due to its atomic scale thickness. To enhance PL intensity, field enhancement techniques, such as surface plasmon resonance (SPR) of metal nanoparticles, are often employed. However, SPR-induced light confinement at the nanoscale also leads to significant localized heating. In this study, we investigated the impact of near-field heating due to SPR using tip-enhanced Raman spectroscopy (TERS) and tip-enhanced photoluminescence studies. Our results reveal nearly an order-of-magnitude difference in the enhancement factors (EFs) for Raman and PL signals of monolayer MoS2, with a local temperature increase of approximately 147 °C under the TERS tip at a laser power of 10.57 mW. The reduced PL EF compared with Raman EF is attributed to additional near-field heating from SPR. We further observed that local temperature fluctuations critically affect the EFs and found that a high thermal conductivity substrate can effectively mitigate the near-field thermal effects associated with SPR.
Transition Metal Oxides at Low Dimensions: Augmented Properties and Advanced Applications
Raktima Basu, Sandip Dhara
Transition Metal Oxides at Low Dimensions Augmented Properties and Advanced Applications, 2025
This book covers enhanced properties and cutting-edge applications of transition metal oxides (TMOs) at low dimensions (2D, 1D, and 0D). The electronic bandgap modification and emergence of novel and fascinating properties due to reduced dimension are discussed in detail. It covers various synthesis procedures and advanced technical tools for the characterization of the TMOs at lower dimensions and enhanced properties of the TMOs at lower dimensions realizing ground-breaking applications in advanced energy storage and energy harvesting, catalysis, and chemical sensing. Features: Covers applications and possible devices made of nanoclusters/quantum dots (QDs) and 1D and 2D TMOs. Discusses low-dimensional TMOs for advanced properties. Explores next-generation advancement in green energy, gas/chemical sensing, and photocatalysis. Reviews low-cost TMO-based devices with advantage over electronic-grade transition metal dichalcogenides (TMDs). Details physics of 1D TMOs including perspectives from spin wave and charge density wave. This book is aimed at researchers and graduate students in materials science.
Enhanced plasmonic performance of TiO2 derived TiN films via gas nitridation
Liya Tony, I. Packia Selvam, Sandip Dhara, S.N. Potty
Materials Science and Engineering B, 2025
Novel bilayer 2D V2O5 as a potential catalyst for fast photodegradation of organic dyes
P. R. Reshma, Arun K. Prasad, Sandip Dhara
Scientific Reports, 2024
Cr-induced structural phase transformation in sputter deposited poly-AlN thin film from wurtzite to rocksalt structure and their effect on the optical properties
Ch Kishan Singh, Balmukund Shukla, Mukul Gupta, R Ramaseshan, Sandip Dhara
Materials Research Bulletin, 2024
Sensitive determination of mechanical and thermal properties of MoS2 multilayers using microcantilevers
M. Raghu Ramaiah, R.G. Athira, Kishore K. Madapu, K. Prabakar, S. Tripurasundari, Sandip K. Dhara
Sensors and Actuators A Physical, 2024
Determination of thermal conductivity of phase pure 10H-SiC thin films by non-destructive Raman thermometry
Madhusmita Sahoo, Kalyan Ghosh, Swayamprakash Sahoo, Pratap K. Sahoo, Tom Mathews, Sandip Dhara
Thin Solid Films, 2024
Template-assisted growth of Ga-based nanoparticle clusters on Si: effect of post-annealing process on the Ga ion beam exposed 2D arrays fabricated by focused ion beam nanolithography
Hrudya Radhakrishnan, Rajagopal Rangarajan, Ramanathaswamy Pandian, Sandip Kumar Dhara
Nanotechnology, 2024
Low-wettable Nanopatterned SERS Platform for Sub-ppt-level Detection of Xanthene Food Additive
Sourav Pan, Ch. Kishan Singh, Sandip Dhara, S. Amirthapandian, Arindam Das
Journal of Physical Chemistry C, 2024
Triclinic phase: The link behind the structural transition in V1-xMgx O2
Raktima Basu, V. Srihari, T. R. Ravindran, Sharat Chandra, Himanshu Kumar Poswal, S. Dhara
Physical Review B, 2024
Synergistic effect of morphology and Co+2/Co+3 ratio on supercapacitor performance of Co3O4/vertical graphene nanosheets binder-free hybrid electrodes
Madhav Kumar V., S.R. Polaki, Tripura Sundari S., S. Dhara
Journal of Energy Storage, 2024
Spectroscopic fingerprints of ultra-clean transferred monolayer MoS2
C. Abinash Bhuyan, Kishore K. Madapu, S. Dhara
Aip Conference Proceedings, 2024
Gravimetric analysis of water vapor adsorption kinetics on hydrophilic and hydrophobic Si surfaces using microcantilevers
K. Prabakar, M. Raghu Ramaiah, S. Tripurasundari, Sandip Dhara
Sensors and Actuators A Physical, 2024
Elucidating Phase Transitions and the Genesis of Broadband Emission in MA1-xFAxPbBr3 Perovskites
Dhiman Kalita, Puspanjali Sahu, Pronoy Nandi, Kishore K. Madapu, Sandip Dhara, Alexander Schoekel, Subhendra. D. Mahanti, Dinesh Topwal, Unnikrishnan Manju
Journal of Physical Chemistry C, 2023
Influence of CeO2 on glass formation, structural and thermal properties of sodium niobium phosphate glass
Abhiram Senapati, Suvendu Kumar Barik, Pradyumna Kumar Parida, Kishore K. Madapu, S. Balakrishnan, Hrudananda Jena, Sandip Kumar Dhara
Ceramics International, 2023
Piezoelectric response of InN nanostructures grown on c-Al2O3 and Si substrates: Role of oxygen incorporation in improved piezoresponse
Kishore K. Madapu, G. Mangamma, S.R. Polaki, S. Dhara
Materials Research Bulletin, 2023
Origin of bound exciton emission in CVD-grown monolayer MoS2
Kishore K. Madapu, C. Abinash Bhuyan, Sandip Dhara
Physical Review B, 2023
Theory of Light Scattering and Applications
T. R. Ravindran, Sandip Dhara
Nanoscopy and Nanospectroscopy, 2023
Plasmonic and Optical Confinement
Binaya Kumar Sahu, Pratap K. Sahoo, Sandip Dhara
Nanoscopy and Nanospectroscopy, 2023
Nanoscopy and Nanospectroscopy
Sandip Dhara, Deep Jariwala, Soumen Das
Nanoscopy and Nanospectroscopy, 2023
Residual stress, strain and defects: its effect on the band gap of poly-Ge thin film realized on glass via Au induced layer exchange crystallization process
Ch Kishan Singh, T Mathews, Sandip Dhara
Physica Scripta, 2022
Excitation-dependent photoluminescence intensity of monolayer MoS2: Role of heat-dissipating area and phonon-assisted exciton scattering
C. Abinash Bhuyan, Kishore K. Madapu, Sandip Dhara
Journal of Applied Physics, 2022
Studies on tuning surface electronic properties of hydrogenated diamond by oxygen functionalization
N. Mohasin Sulthana, K. Ganesan, P.K. Ajikumar, S. Dhara
Diamond and Related Materials, 2022
Novel Study of Strain-Induced Piezoelectricity in VO2
Raktima Basu, Geramilla Mangamma, Sandip Dhara
ACS Omega, 2022
A Simulation Approach to Study the Effect of SiC Polytypism Factor on Sensitivity of Piezoresistive MEMS Pressure Sensor
Mahesh Kumar Patankar, M. Kasinathan, R. P. Behera, T. Jayanthi, Sandip Dhara
Silicon, 2022
A Novel Methodology of Using Nonsolvent in Achieving Ultraclean Transferred Monolayer MoS2
C. Abinash Bhuyan, Kishore K. Madapu, K. Prabakar, Arindam Das, S. R. Polaki, Shyam K. Sinha, Sandip Dhara
Advanced Materials Interfaces, 2022
Observation of local vibrational modes in N-doped 6H-SiC
M. K. Patankar, Santanu Parida, Sharat Chandra, V. Srihari, M. Kasinathan, R. P. Behera, T. Jayanthi, Sandip Dhara
Indian Journal of Physics, 2022
Ag nanowires based SERS substrates with very high enhancement factor
Mathew K. Francis, Binaya Kumar Sahu, P. Balaji Bhargav, Balaji C, Nafis Ahmed, A. Das, Sandip Dhara
Physica E Low Dimensional Systems and Nanostructures, 2022
Growing AuNRs in a single step with NIR plasmon for superior SERS and plasmonic photothermal performance
Sourav Pan, Binaya Kumar Sahu, Amirthapandian S, Sandip Dhara, Arindam Das
Journal of Physics and Chemistry of Solids, 2022
Alpha radiation detection using Si PIN diodes
K Prabakar, O.K. Sheela, Raghu Ramaiah M, S. Tripura Sundari, Sandip Dhara
2022 IEEE International Conference on Emerging Electronics Icee 2022, 2022
Effect of heating rate and precursor composition on secondary phase formation during Cu2ZnSnS4 thin film growth and its properties
Sagar Agrawal, C. Balasubramanian, Subroto Mukherjee, Rinkal Kanani, Kishore K. Madapu, Sandip Dhara
Thin Solid Films, 2022
Electronic and Vibrational Decoupling in Chemically Exfoliated Bilayer Thin Two-Dimensional V2O5
Reshma P. R., Anees Pazhedath, Shyam Kanta Sinha, Arup Dasgupta, Ganesan Karuppiah, Arun K. Prasad, Sandip Dhara
Journal of Physical Chemistry Letters, 2021
Wide Band Gap Al and In Co-doped ZnO Films for Near-Infrared Plasmonic Application
Soumya Kannoth, Packia Selvam Irulappan, Sandip Dhara, Sankara Narayanan Potty
Plasmonics, 2021
Direct microscopic evidence of shear induced graphitization of ultrananocrystalline diamond films
K. Ganesan, Revati Rani, Tom Mathews, S. Dhara
Carbon Trends, 2021
Controlling the morphology of nanocrystalline Y(OH)3 powders synthesized by microwave-hydrothermal route and effect of annealing
Thirupathi Gadipelly, Arup Dasgupta, D. Sornadurai, Sandip Dhara
Applied Physics A Materials Science and Processing, 2021
Engineering the edge-terminations and defect-density to enhance the electrochemical capacitance performance of vertical graphene nanosheets
S.R. Polaki, Gopinath Sahoo, P. Anees, N.G. Krishna, M. Kamruddin, S. Dhara
Applied Surface Science, 2021
Temperature- And size-dependent photoluminescence in colloidal CdTe and CdxZn1−xTe quantum dots
Janani Balakrishnan, Preethi L K, Sreeshma D, Amardeep Jagtap, Kishore K Madapu, Sandip Dhara, K S R Koteswara Rao
Journal of Physics D Applied Physics, 2021
A novel mechanism for understanding the strong enhancement of photoluminescence quantum yield in large-area monolayer MoS2grown by CVD
Kishore K. Madapu, C. Abinash Bhuyan, S. K. Srivastava, Sandip Dhara
Journal of Materials Chemistry C, 2021
A very low temperature (170 °C) crystallization of amorphous-Ge thin film on glass via Au induced layer exchange process in amorphous-Ge/GeOx/Au/glass stack and electrical characterization
Ch. Kishan Singh, E.P. Amaladass, P.K. Parida, T. Sain, S. Ilango, Sandip Dhara
Applied Surface Science, 2021
Effect of Oxygen and Aluminum Incorporation on the Local Structure of GaN Nanowires: Insight from Extended X-ray Absorption Fine Structure Analysis
Santanu Parida, Madhusmita Sahoo, Abharana N, Raphael M. Tromer, Douglas S. Galvao, Sandip Dhara
Journal of Physical Chemistry C, 2021
Optimized Au NRs for efficient SERS and SERRS performances with molecular and longitudinal surface plasmon resonance
Binaya Kumar Sahu, Aradhana Dwivedi, Kuntal Kumar Pal, R. Pandian, S. Dhara, A. Das
Applied Surface Science, 2021
Chemical Solution Synthesis for Materials Design and Thin Film Device Applications
Chemical Solution Synthesis for Materials Design and Thin Film Device Applications, 2021
Introduction
Soumen Das, Sandip Dhara
Chemical Solution Synthesis for Materials Design and Thin Film Device Applications, 2021
Crystallization of PECVD grown Si nanowire and its characterization using confocal Raman and EELS studies
Nafis Ahmed, P. Ramasamy, P. Balaji Bhargav, A. K. Sivadasan, S. Amirthapandian, Sandip Dhara, C. Balaji
Journal of Materials Science Materials in Electronics, 2021
Site substitution in GdMnO3: Effects on structural, electronic, and magnetic properties
Sudipta Mahana, Shishir Kumar Pandey, Bipul Rakshit, Pronoy Nandi, Raktima Basu, Sandip Dhara, S. Turchini, N. Zema, U. Manju, Subhendra D. Mahanti, D. Topwal
Physical Review B, 2020
Probing phase transition in VO2 with the novel observation of low-frequency collective spin excitation
Raktima Basu, V. Srihari, Manas Sardar, Sachin Kumar Srivastava, Santanu Bera, Sandip Dhara
Scientific Reports, 2020
Phonon imaging in the sub-diffraction limit
Sandip Dhara
Aip Conference Proceedings, 2020
Polarized Raman scattering study confirming the observation of spinon-vibration in VO2
Raktima Basu, Sandip Dhara
Aip Conference Proceedings, 2020
Wavelength dependence of photothermal deflection in Au/Si bimaterial microcantilevers
M. Raghu Ramaiah, K. Prabakar, S. Tripura Sundari, Sandip K. Dhara
Sensors and Actuators A Physical, 2020
Laser-induced anharmonicity vs thermally induced biaxial compressive strain in mono- And bilayer MoS2grown via CVD
Kishore K. Madapu, Sandip Dhara
Aip Advances, 2020
Near room temperature CH4 sensing and role of oxidation states for phase pure Wadsley VnO2n+1 nanostructures
Raktima Basu, P.R. Reshma, Arun K. Prasad, Sandip Dhara
Materials Chemistry and Physics, 2020
Geometrically Controlled Au-Decorated ZnO Heterojunction Nanostructures for NO2Detection
Dinesh V. Ponnuvelu, Jayaseelan Dhakshinamoorthy, Arun K. Prasad, Sandip Dhara, Mohammed Kamruddin, Biji Pullithadathil
ACS Applied Nano Materials, 2020
Nano-spectroscopic and nanoscopic imaging of single GaN nanowires in the sub-diffraction limit
Santanu Parida, Avinash Patsha, Kishore K. Madapu, Sandip Dhara
Journal of Applied Physics, 2020
Role of Native Defect in near Room Temperature CH4 Sensing Using Nanostructured V2O5
Reshma P. Radhakrishnan, Arun K. Prasad, Sandip Dhara
IEEE Sensors Journal, 2020
Role of the surface density of states in understanding size-dependent surface band bending in GaN nanowires
Santanu Parida, Aloka Ranjan Sahoo, Kishore K. Madapu, S. Mathi Jaya, Sandip Dhara
Applied Surface Science, 2020
Structural investigations of Y2O3 dispersoids during mechanical milling and high-temperature annealing of Fe-15Y2O3-xTi (x = 0–15) model ODS alloys
Pradyumna Kumar Parida, Arup Dasgupta, Velaga Srihari, Chanchal Ghosh, Raktima Basu, R. Mythili, Sandip Dhara
Advanced Powder Technology, 2020
Synthesis and structural characterisation of Y2Ti2O7 using microwave hydrothermal route
Thirupathi Gadipelly, Arup Dasgupta, Chanchal Ghosh, Vaishnavi Krupa, D. Sornadurai, Binaya Kumar Sahu, Sandip Dhara
Journal of Alloys and Compounds, 2020
Phase-pure VO 2 nanoporous structure for binder-free supercapacitor performances
Raktima Basu, Subrata Ghosh, Santanu Bera, A. Das, S. Dhara
Scientific Reports, 2019
Determining the polarity of droplet epitaxy grown AlGaN nanorods using piezoresponse force microscopy
Santanu Parida, G. Mangamma, Chirantan Singha, A. Bhattacharyya, Sandip Dhara
Nano Structures and Nano Objects, 2019
Role of graphite on the thermoelectric performance of Sb2Te3/graphite nanocomposite
Subarna Das, P. Singha, A. K. Deb, S. C. Das, S. Chatterjee, V. A. Kulbachinskii, V. G. Kytin, D. A. Zinoviev, N. V. Maslov, Sandip Dhara, S. Bandyopadhyay, Aritra Banerjee
Journal of Applied Physics, 2019
Polarized Tip-Enhanced Raman Spectroscopy in Understanding Metal-to-Insulator and Structural Phase Transition in VO 2
Raktima Basu, Avinash Patsha, Sharat Chandra, S. Amirthapandian, Raghavendra Karkala Gururaj, Arup Dasgupta, Sandip Dhara
Journal of Physical Chemistry C, 2019
Size-dependent surface potential of Si-doped InN nanorods and the role of inhomogeneous free-electron distribution
Kishore K. Madapu, Santanu Parida, K. Jeganathan, Madhusmita Baral, Sandip Dhara
Journal of Applied Physics, 2019
Light-Induced Tunable n-Doping of Ag-Embedded GO/RGO Sheets in Polymer Matrix
Neelam Singh, Deepak Kothari, Jamilur R. Ansari, Mrinal Pal, Sankar Mandal, Sandip Dhara, Anindya Datta
Journal of Physical Chemistry C, 2019
Unique identification of phonon modes using polarized Raman studies of SnO(001) crystals
Raktima Basu, D Sornadurai, S Amirthapandian, Sandip Dhara
Bulletin of Materials Science, 2019
Si and N - Vacancy color centers in discrete diamond nanoparticles: Raman and fluorescence spectroscopic studies
K. Ganesan, P.K. Ajikumar, S. Ilango, G. Mangamma, S. Dhara
Diamond and Related Materials, 2019
Sub-wavelength waveguide properties of 1D and surfacefunctionalized SnO 2 nanostructures of various morphologies
Venkataramana Bonu, Binaya Kumar Sahu, Arindam Das, Sankarakumar Amirthapandian, Sandip Dhara, Harish C Barshilia
Beilstein Journal of Nanotechnology, 2019
Insights into the electrochemical capacitor performance of transition metal-vertical graphene nanosheet hybrid electrodes
Gopinath Sahoo, S. R. Polaki, P. Anees, Subrata Ghosh, Sandip Dhara, M. Kamruddin
Physical Chemistry Chemical Physics, 2019
Anomalous Effects of Lattice Strain and Ti3+ Interstitials on Room-Temperature Magnetic Ordering in Defect-Engineered Nano-TiO2
Jayaseelan Dhakshinamoorthy, Arun K. Prasad, Sandip Dhara, Biji Pullithadathil
Journal of Physical Chemistry C, 2018
Modulation of thermal conductivity and thermoelectric figure of merit by anharmonic lattice vibration in Sb2Te3 thermoelectrics
Diptasikha Das, K. Malik, Subarna Das, P. Singha, A. K. Deb, V. A. Kulbachinskii, Raktima Basu, Sandip Dhara, Arup Dasgupta, S. Bandyopadhyay, Aritra Banerjee
Aip Advances, 2018
Size-Dependent Localized Phonon Population in Semiconducting Si Nanowires
Avinash Patsha, Sandip Dhara
Nano Letters, 2018
Nano-molar to milli-molar level Ag (I) determination using absorption of light by ZnS QDs without organic ligand
Rabindra Nath Juine, S. Amirthapandian, S. Dhara, A. Das
Sensors and Actuators B Chemical, 2018
Surface-enhanced Raman spectroscopy using 2D plasmons of InN nanostructures
Kishore K. Madapu, Sandip Dhara
Applied Physics A Materials Science and Processing, 2018
Differences in hydrogen absorption over Pd and Pt functionalized CVD-grown GaN nanowires
Arun K. Prasad, Prasana K. Sahoo, Sandip Dhara, Sitaram Dash, Ashok K. Tyagi
Materials Chemistry and Physics, 2018
Observation of surface plasmon polaritons in 2D electron gas of surface electron accumulation in InN nanostructures
Kishore K Madapu, A K Sivadasan, Madhusmita Baral, Sandip Dhara
Nanotechnology, 2018
Spectroscopic study of native defects in the semiconductor to metal phase transition in V2O5 nanostructure
Raktima Basu, Sandip Dhara
Journal of Applied Physics, 2018
High pressure spectroscopic studies of phase transition in VO2
Raktima Basu, K. K. Mishra, T. R. Ravindran, Sandip Dhara
Aip Conference Proceedings, 2018
Origin of phase transition in VO2
Raktima Basu, Manas Sardar, Sandip Dhara
Aip Conference Proceedings, 2018
Native defect-assisted enhanced response to CH4 near room temperature by Al0.07Ga0.93N nanowires
Santanu Parida, A. Das, Arun K. Prasad, Jay Ghatak, Sandip Dhara
Physical Chemistry Chemical Physics, 2018
Effect of Scattering Efficiency in the Tip-Enhanced Raman Spectroscopic Imaging of Nanostructures in the Sub-diffraction Limit
A. K. Sivadasan, Avinash Patsha, Achyut Maity, Tapas Kumar Chini, Sandip Dhara
Journal of Physical Chemistry C, 2017
Charge transport studies on Si nanopillars for photodetectors fabricated using vapor phase metal-assisted chemical etching
Prajith Karadan, Santanu Parida, Arvind Kumar, Aji A. Anappara, Sandip Dhara, Harish C. Barshilia
Applied Physics A Materials Science and Processing, 2017
VO2 microcrystals as an advanced smart window material at semiconductor to metal transition
Raktima Basu, P Magudapathy, Manas Sardar, Ramanathaswamy Pandian, Sandip Dhara
Journal of Physics D Applied Physics, 2017
Spectroscopically forbidden infra-red emission in Au-vertical graphene hybrid nanostructures
A K Sivadasan, Santanu Parida, Subrata Ghosh, Ramanathaswamy Pandian, Sandip Dhara
Nanotechnology, 2017
Local inversion symmetry breaking and spin-phonon coupling in the perovskite GdCrO3
Sudipta Mahana, Bipul Rakshit, Raktima Basu, Sandip Dhara, Boby Joseph, U. Manju, Subhendra D. Mahanti, D. Topwal
Physical Review B, 2017
Evolution of phonon anharmonicity in Se-doped S b2 T e3 thermoelectrics
Diptasikha Das, Subarna Das, P. Singha, K. Malik, A. K. Deb, A. Bhattacharyya, V. A. Kulbachinskii, Raktima Basu, Sandip Dhara, S. Bandyopadhyay, Aritra Banerjee
Physical Review B, 2017
Surface optical phonon modes in hexagonal shaped Al0.97Ga0.03N nanostructures
A. K. Sivadasan, Chirantan Singha, K. G. Raghavendra, S. Amirthapandian, A. Bhattacharyya, Arup Dasgupta, Sandip Dhara
Applied Physics A Materials Science and Processing, 2017
Selective NO2 sensor based on nanostructured vanadium oxide films
Arun K. Prasad, S. Dhara, S. Dash
Sensor Letters, 2017
Highly sensitive, atmospheric pressure operatable sensor based on Au nanoclusters decorated TiO2@Au heterojunction nanorods for trace level NO2 gas detection
Dinesh Veeran Ponnuvelu, Biji Pullithadathil, Arun K. Prasad, Sandip Dhara, Kamruddin Mohamed, Ashok Kumar Tyagi, Baldev Raj
Journal of Materials Science Materials in Electronics, 2017
Spectroscopic investigation of native defect induced electron-phonon coupling in GaN nanowires
Santanu Parida, Avinash Patsha, Santanu Bera, Sandip Dhara
Journal of Physics D Applied Physics, 2017
Optical properties of AlGaN nanowires synthesized via ion beam techniques
Santanu Parida, P. Magudapathy, A. K. Sivadasan, Ramanathaswamy Pandian, Sandip Dhara
Journal of Applied Physics, 2017
The role of 1-D finite size Heisenberg chains in increasing the metal to insulator transition temperature in hole rich VO2
Raktima Basu, Manas Sardar, Santanu Bera, P. Magudapathy, Sandip Dhara
Nanoscale, 2017
Near field optical and spectroscopic imaging of InN nanostructures
Kishore K. Madapu, A. K. Sivadasan, Sandip Dhara
Aip Conference Proceedings, 2017
The self-catalytic and catalyst assisted CVD growth of high optical quality AlGaN nanowires
A. K. Sivadasan, Santanu Parida, Sandip Dhara
Aip Conference Proceedings, 2017
Effect of Ar+ implantation on the optical properties of Al/GaN nanowires
Santanu Parida, P. Magudapathy, A. K. Sivadasan, Avinash Patsha, Sandip Dhara
Aip Conference Proceedings, 2017
Far field photoluminescence imaging of single AlGaN nanowire in the sub-wavelength scale using confinement of polarized light
A. K. Sivadasan, Manas Sardar, Sandip Dhara
Annalen Der Physik, 2017
Sputtered AZO Thin Films for TCO and Back Reflector Applications in Improving the Efficiency of Thin Film a-Si:H Solar Cells
Arokiyadoss Rayerfrancis, P. Balaji Bhargav, Nafis Ahmed, Sekhar Bhattacharya, Balaji Chandra, Sandip Dhara
Silicon, 2017
Structural and optical investigations on seed layer assisted hydrothermally grown ZnO nanorods on flat and textured substrates
Arokiyadoss Rayerfrancis, P Balaji Bhargav, Nafis Ahmed, C Balaji, Sandip Dhara
Materials Research Express, 2016
Probing localized surface plasmons of trisoctahedral gold nanocrystals for surface enhanced raman scattering
Achyut Maity, Arpan Maiti, Biswarup Satpati, Avinash Patsha, Sandip Dhara, Tapas Kumar Chini
Journal of Physical Chemistry C, 2016
Role of vanadyl oxygen in understanding metallic behavior of V2O5(001) nanorods
Raktima Basu, Arun K. Prasad, Sandip Dhara, A. Das
Journal of Physical Chemistry C, 2016
Electrochemical supercapacitor performance of SnO2 quantum dots
Venkataramana Bonu, Bhavana Gupta, Sharat Chandra, Arindam Das, Sandip Dhara, A.K. Tyagi
Electrochimica Acta, 2016
Polarized Raman and photoluminescence studies of a sub-micron sized hexagonal AlGaN crystallite for structural and optical properties
A. K. Sivadasan, Sandip Dhara
Journal of Raman Spectroscopy, 2016
Effect of strain relaxation and the Burstein-Moss energy shift on the optical properties of InN films grown in the self-seeded catalytic process
Kishore K. Madapu, Sandip Dhara
Crystengcomm, 2016
Piezoelectric domains in the AlGaN hexagonal microrods: Effect of crystal orientations
A. K. Sivadasan, G. Mangamma, Santanu Bera, M. Kamruddin, Sandip Dhara
Journal of Applied Physics, 2016
Tuning of thermoelectric properties with changing Se content in Sb2Te3
D. Das, K. Malik, A. K. Deb, V. A. Kulbachinskii, V. G. Kytin, S. Chatterjee, D. Das, S. Dhara, S. Bandyopadhyay, A. Banerjee
Epl, 2016
The light-matter interaction of a single semiconducting AlGaN nanowire and noble metal Au nanoparticles in the sub-diffraction limit
A. K. Sivadasan, Kishore K. Madapu, Sandip Dhara
Physical Chemistry Chemical Physics, 2016
Excitation dependent Raman studies of self-seeded grown InN nanoparticles with different carrier concentration
Kishore K. Madapu, S. R. Polaki, Sandip Dhara
Physical Chemistry Chemical Physics, 2016
Rapid synthesis and characterization of hybrid ZnO@Au core-shell nanorods for high performance, low temperature NO 2 gas sensor applications
Dinesh Veeran Ponnuvelu, Biji Pullithadathil, Arun K. Prasad, Sandip Dhara, Anuradha Ashok, Kamruddin Mohamed, Ashok Kumar Tyagi, Baldev Raj
Applied Surface Science, 2015
Invoking forbidden modes in SnO2 nanoparticles using tip enhanced Raman spectroscopy
Venkataramana Bonu, A. Das, A. K. Sivadasan, A. K. Tyagi, Sandip Dhara
Journal of Raman Spectroscopy, 2015
Flipping growth orientation of nanographitic structures by plasma enhanced chemical vapor deposition
Subrata Ghosh, K. Ganesan, S. R. Polaki, S. Ilango, S. Amirthapandian, S. Dhara, M. Kamruddin, A. K. Tyagi
Rsc Advances, 2015
Localized tip enhanced Raman spectroscopic study of impurity incorporated single GaN nanowire in the sub-diffraction limit
Avinash Patsha, Sandip Dhara, A. K. Tyagi
Applied Physics Letters, 2015
Influence of substrate on nucleation and growth of vertical graphene nanosheets
Subrata Ghosh, K. Ganesan, S.R. Polaki, Tom Mathews, Sandip Dhara, M. Kamruddin, A.K. Tyagi
Applied Surface Science, 2015
Localized Charge Transfer Process and Surface Band Bending in Methane Sensing by GaN Nanowires
Avinash Patsha, Prasana Sahoo, S. Amirthapandian, Arun K. Prasad, A. Das, A. K. Tyagi, Monica A. Cotta, Sandip Dhara
Journal of Physical Chemistry C, 2015
Nonpolar p-GaN/n-Si heterojunction diode characteristics: A comparison between ensemble and single nanowire devices
Avinash Patsha, Ramanathaswamy Pandian, Sandip Dhara, A K Tyagi
Journal of Physics D Applied Physics, 2015
Effect of substrate heating and microwave attenuation on the catalyst free growth and field emission of carbon nanotubes
R. Kar, S.G. Sarkar, C.B. Basak, Avinash Patsha, Sandip Dhara, Chanchal Ghosh, Divakar Ramachandran, N. Chand, S.S. Chopade, D.S. Patil
Carbon, 2015
Defect induced structural and thermoelectric properties of Sb2Te3 alloy
Diptasikha Das, K. Malik, A. K. Deb, Sandip Dhara, S. Bandyopadhyay, Aritra Banerjee
Journal of Applied Physics, 2015
Carrier mediated reduction of stiffness in nanoindented crystalline Si(100)
S. Kataria, Sandip Dhara, S. Dash, A. K. Tyagi
Journal of Applied Physics, 2015
Reduced graphene oxide synthesis by high energy ball milling
O. Mondal, S. Mitra, M. Pal, A. Datta, S. Dhara, D. Chakravorty
Materials Chemistry and Physics, 2015
Optical properties of Mg doped p -type GaN nanowires
Avinash Patsha, Ramanathaswamy Pandian, S. Dhara, A. K. Tyagi
Aip Conference Proceedings, 2015
Investigation of gas sensing properties of InN nanoparticles
Kishore K. Madapu, A. K. Prasad, A. K. Tyagi, S. Dhara
Aip Conference Proceedings, 2015
Self-catalyzed growth of novel AlGaN hexagonal microrods
A. K. Sivadasan, S. R. Polaki, S. Ilango, S. Dhara
Aip Conference Proceedings, 2015
Structural and transport properties of metallic and semiconducting Sb 2 Te 3 alloy
Diptasikha Das, K. Malik, S. Dhara, S. Bandyopadhyay, S. Banerjee, Aritra Banerjee
Aip Conference Proceedings, 2015
Confocal Raman studies in determining crystalline nature of PECVD grown Si nanowires
Nafis Ahmed, A. K. Sivadasan, S. Amirthapandian, P. Balaji Bhargav, S. Bhattacharya, P. Ramasamy, B. K. Panigrahi, A. K. Tyagi, S. Dhara
Aip Conference Proceedings, 2015
Facile gamma radiolytic methodology for TiO2-rGO synthesis: Effect on photo-catalytic H2 evolution
Bhavana Gupta, Ambrose A. Melvin, Tom Matthews, S. Dhara, S. Dash, A.K. Tyagi
International Journal of Hydrogen Energy, 2015
Growth of InN quantum dots to nanorods: A competition between nucleation and growth rates
Kishore K. Madapu, Sandip Dhara, S. Polaki, S. Amirthapandian, A. K. Tyagi
Crystengcomm, 2015
Optically confined polarized resonance Raman studies in identifying crystalline orientation of sub-diffraction limited AlGaN nanostructure
A. K. Sivadasan, Avinash Patsha, Sandip Dhara
Applied Physics Letters, 2015
Photoluminescence of oxygen vacancies and hydroxyl group surface functionalized SnO2 nanoparticles
Venkataramana Bonu, Arindam Das, S. Amirthapandian, Sandip Dhara, Ashok Kumar Tyagi
Physical Chemistry Chemical Physics, 2015
Catalyst free growth of ZnO nanowires on graphene and graphene oxide and its enhanced photoluminescence and photoresponse
Ravi K Biroju, Nikhil Tilak, Gone Rajender, S Dhara, P K Giri
Nanotechnology, 2015
Plasmonic Switching in Au-Functionalized GaN Nanowires in the Realm of Surface Plasmon Polariton Propagation: a Single Nanowire Switching Device
Sandip Dhara, Chien-Yao Lu, Kuei-Hsien Chen
Plasmonics, 2015
Optical properties of monodispersed AlGaN nanowires in the single-prong growth mechanism
A. K. Sivadasan, Avinash Patsha, S. Polaki, S. Amirthapandian, Sandip Dhara, Anirban Bhattacharya, B. K. Panigrahi, A. K. Tyagi
Crystal Growth and Design, 2015
Surface functionalization-enhanced magnetism in SnO2 nanoparticles and its correlation to photoluminescence properties
Venkataramana Bonu, Arindam Das, Manas Sardar, Sandip Dhara, Ashok Kumar Tyagi
Journal of Materials Chemistry C, 2015
Effect of pH on the morphology of ZnO nanostructures and its influence on structural and optical properties
Arokiyadoss Rayerfrancis, P. Balaji Bhargav, Nafis Ahmed, Balaji Chandra, Sandip Dhara
Physica B Condensed Matter, 2015
Surface plasmon polariton assisted optical switching in noble bimetallic nanoparticle system
Sandip Dhara, C.-Y. Lu, P. Magudapathy, Y.-F. Huang, W.-S. Tu, K.-H. Chen
Applied Physics Letters, 2015
Resonance raman spectroscopic study of shapeinduced phase transition in CdSe nanoclusters
Sandip Dhara, Chuan‐Pu Liu, Shu‐Fang Chen, Andrei A. Eliseev, Dmitry I. Petukhov
Journal of Raman Spectroscopy, 2015
Resonance Raman spectroscopic study for radial vibrational modes in ultra-thin walled TiO2 nanotubes
Rajini P. Antony, Arup Dasgupta, Sudipta Mahana, D. Topwal, Tom Mathews, Sandip Dhara
Journal of Raman Spectroscopy, 2015
Influence of in-plane and bridging oxygen vacancies of SnO2 nanostructures on CH4 sensing at low operating temperatures
Venkataramana Bonu, A. Das, Arun K. Prasad, Nanda Gopala Krishna, Sandip Dhara, A. K. Tyagi
Applied Physics Letters, 2014
Direct evidence of Mg incorporation pathway in vapor-liquid-solid grown p-type nonpolar GaN nanowires
Avinash Patsha, S. Amirthapandian, Ramanathaswamy Pandian, Santanu Bera, Anirban Bhattacharya, Sandip Dhara
Journal of Physical Chemistry C, 2014
60 keV Ar+-ion induced modification of microstructural, compositional, and vibrational properties of InSb
D. P. Datta, S. K. Garg, B. Satpati, P. K. Sahoo, A. Kanjilal, S. Dhara, D. Kanjilal, T. Som
Journal of Applied Physics, 2014
Argon-ion-induced formation of nanoporous GaSb layer: Microstructure, infrared luminescence, and vibrational properties
D. P. Datta, A. Kanjilal, B. Satpati, S. Dhara, T. D. Das, D. Kanjilal, T. Som
Journal of Applied Physics, 2014
The role of SnO2 quantum dots in improved CH4 sensing at low temperature
A. Das, Venkataramana Bonu, Arun K. Prasad, D. Panda, Sandip Dhara, Ashok K. Tyagi
Journal of Materials Chemistry C, 2014
Intrinsic high magnetism in SnO2 quantum dots
Bonu Venkataramana, A. Das, Manas Sardar, S. Dhara, A. K. Tyagi
Aip Conference Proceedings, 2014
Novel single phase vanadium dioxide nanostructured films for methane sensing near room temperature
A.K. Prasad, S. Amirthapandian, S. Dhara, S. Dash, N. Murali, A.K. Tyagi
Sensors and Actuators B Chemical, 2014
Catalyst free vapour-solid growth of novel GaN nanostructures at low temperature
Thobeka Kente, Neil J. Coville, Sabelo D. Mhlanga, Hendrik C. Swart, Elizabeth Coetsee, Rudolph M. Erasmus, Sandip Dhara
Nanoscience and Nanotechnology Letters, 2014
Plasmon-mediated, highly enhanced photocatalytic degradation of industrial textile dyes using hybrid ZnO@Ag core-shell nanorods
V. P. Dinesh, P. Biji, Anuradha Ashok, S. K. Dhara, M. Kamruddin, A. K. Tyagi, Baldev Raj
Rsc Advances, 2014
Influence of oxygen in architecting large scale nonpolar GaN nanowires
Avinash Patsha, S. Amirthapandian, Ramanathaswamy Pandian, S. Dhara
Journal of Materials Chemistry C, 2013
Raman Spectral Mapping of III-V Nitride and Graphene Nanostructures
Avinash Patsha, Kishore K. Madapu, S. Dhara
Mapan Journal of Metrology Society of India, 2013
Evolution of GaN nanowire morphology during catalyst-induced growth process
Prasana Sahoo, Sandip Dhara, S. Amirthapandian, M. Kamruddin
Journal of Materials Chemistry C, 2013
Raoult's formalism in understanding Low-temperature growth of GaN nanowires using binary precursor
Kishore K. Madapu, S. Dhara, S. Amirthapandian, S. Polaki, A. K. Tyagi
Journal of Physical Chemistry C, 2013
Optical and structural properties of ammonia-free amorphous silicon nitride thin films for photovoltaic applications
Nafis Ahmed, Chandra Bhal Singh, S. Bhattacharya, S. Dhara, P. Balaji Bhargav
Spectroscopy Letters, 2013
Nitrogen dioxide induced conductivity switching in ZnO thin film
Rishi Vyas, Sarla Sharma, Parul Gupta, Arun K. Prasad, S.K. Dhara, A.K. Tyagi, K. Sachdev, S.K. Sharma
Journal of Alloys and Compounds, 2013
Synthesis and surface functionalization of SnO2 nanoparticles and their superhydrophobic coatings
B. V. Ramana, A. Das, S. Dhara, S. Amirthapandian, A. K. Tyagi
Science of Advanced Materials, 2013
Probing the cellular damage in bacteria induced by GaN nanoparticles using confocal laser Raman spectroscopy
Prasana Sahoo, P. Sriyutha Murthy, S. Dhara, V. P. Venugopalan, A. Das, A. K. Tyagi
Journal of Nanoparticle Research, 2013
Facile synthesis of nanostructured CuO for low temperature NO2 sensing
A. Das, Bonu Venkataramana, D. Partheephan, A.K. Prasad, S. Dhara, A.K. Tyagi
Physica E Low Dimensional Systems and Nanostructures, 2013
Direct label free ultrasensitive impedimetric DNA biosensor using dendrimer functionalized GaN nanowires
Prasana Sahoo, Sumathi Suresh, Sandip Dhara, Garima Saini, S. Rangarajan, A.K. Tyagi
Biosensors and Bioelectronics, 2013
Room temperature H2 sensing using functionalized GaN nanotubes with ultra low activation energy
Prasana Sahoo, S. Dhara, S. Dash, S. Amirthapandian, Arun K. Prasad, A.K. Tyagi
International Journal of Hydrogen Energy, 2013
Single molecule detection using SERS study in PVP functionalized Ag nanoparticles
Parul Garg, S. Dhara
Aip Conference Proceedings, 2013
Indium assisted growth of GaN nanowires at low temperatures
Kishore K. Madapu, S. Dhara, S. Amirthapandian, Ramanathaswamy Pandian
Aip Conference Proceedings, 2013
SERS study of Pd-CTAB interactions in monolayer film
A. Das, K. Priya Madhuri, Sonu Mewada, S. Dhara, A. K. Tyagi
Aip Conference Proceedings, 2013
Tribological and electrical properties of nanocrystalline Cu films deposited by DC magnetron sputtering with varying temperature
M. Geetha, N. Kumar, K. Panda, S. Dhara, S. Dash, B.K. Panigrahi, A.K. Tyagi, R. Jayavel, V. Kamaraj
Tribology International, 2013
Tribological studies of nitrogen ion implantation induced overlayer coatings of amorphous carbon and carbonitride phase
N. Kumar, S.K. Srivastava, R. Pandian, Ashok Bahuguna, S. Dhara, K.G.M. Nair, S. Dash, A.K. Tyagi
Nuclear Instruments and Methods in Physics Research Section B Beam Interactions with Materials and Atoms, 2013
Probing crystallographic orientation of a single GaN nanotube using polarized Raman imaging
Avinash Patsha, Prasana Sahoo, S. Dhara, S. Amirthapandian, A. K. Tyagi
Journal of Raman Spectroscopy, 2013
Morphology of InN nanorods using spectroscopic Raman imaging
Kishore K. Madapu, N. R. Ku, S. Dhara, C. P. Liu, A. K. Tyagi
Journal of Raman Spectroscopy, 2013
Self-catalyzed anisotropic growth of GaN spirals
Avinash Patsha, Prasana Sahoo, S. Dhara, A. K. Tyagi
Aip Conference Proceedings, 2012
Synthesis and Raman studies of wurtzite CdS nanosheets
Amrita Mandal, Sourish Banerjee, Sandip Dhara, Dipankar Chakravorty
Aip Conference Proceedings, 2012
Catalysis free growth of GaN nanostructures
Prasana Sahoo, S. Dhara, Avinash Patsha, S. Dash, M. Kamruddin, A. K. Tyagi
Aip Conference Proceedings, 2012
Multiphonon scattering and photoluminescence of two dimensional ZnS nanosheets grown within Na-4 mica
Amrita Mandal, Sreemanta Mitra, Anindya Datta, Sourish Banerjee, Sandip Dhara, Dipankar Chakravorty
Journal of Applied Physics, 2012
Photo-induced tunable local oxidation and fragmentation in Pt ultra-nanoclusters functionalized GaN nanotubes
Prasana Sahoo, S. Dhara, S. Dash, A. K. Tyagi
Journal of Nanoparticle Research, 2012
Tribological properties of ultra nanocrystalline diamond film-effect of sliding counterbodies
Neha Sharma, N. Kumar, S. Dhara, S. Dash, Ashok Bahuguna, M. Kamruddin, A.K. Tyagi, Baldev Raj
Tribology International, 2012
UV induced zener diode characteristic in a single n-ZnO/p ++-Si nanoheterojunction
S. Sarkar Pal, S. Dhara, J.-J. Wu, C. S. Sundar, P. Magudapathy, K. G. M. Nair
Journal of Nanoscience and Nanotechnology, 2012
Evolution of coefficient of friction with deposition temperature in diamond like carbon thin films
S. Kataria, Sandip Dhara, Harish C. Barshilia, S. Dash, A. K. Tyagi
Journal of Applied Physics, 2012
Role of surface polarity in self-catalyzed nucleation and evolution of GaN nanostructures
Prasana Sahoo, S. Dhara, S. Amirthapandian, M. Kamruddin, S. Dash, B. K. Panigrahi, A. K. Tyagi
Crystal Growth and Design, 2012
Efficient photocatalytic hydrogen generation by Pt modified TiO 2 nanotubes fabricated by rapid breakdown anodization
Rajini P. Antony, Tom Mathews, C. Ramesh, N. Murugesan, Arup Dasgupta, S. Dhara, S. Dash, A.K. Tyagi
International Journal of Hydrogen Energy, 2012
Single-step growth dynamics of core-shell GaN on Ga 2O 3 freestanding nanoprotruded microbelts
Prasana Sahoo, Joysurya Basu, Sandip Dhara, Hsin Chiao Fang, Chuan-Pu Liu, T. R. Ravindran, Sitaram Dash, Ashok Kumar Tyagi
Journal of Materials Science, 2012
Raman imaging on high-quality graphene grown by hot-filament chemical vapor deposition
S. Kataria, Avinash Patsha, S. Dhara, A. K. Tyagi, Harish C. Barshilia
Journal of Raman Spectroscopy, 2012
Twin chamber sample assembly in DAC and HPHT studies on GaN nano-particles
Balmukund Shukla, N V Chandra Shekar, N R Sanjay Kumar, T R Ravindran, P Sahoo, S Dhara, P Ch Sahu
Journal of Physics Conference Series, 2012
The effect of pH on synthesis of ZnO nanostructure and its potential application in gas sensor
M. Kamruddin, R. Kamalakannan, S. Dhara, A. K. Tyagi, P. Saranya
Proceedings of the International Conference on Nanoscience Engineering and Technology Iconset 2011, 2011
Growth of GaN nanostructures on graphene
Avinash Patsha, P. Sahoo, Kishore K. Madapu, S. Dhara, A. K. Tyagi
Proceedings of the International Conference on Nanoscience Engineering and Technology Iconset 2011, 2011
Cubic fluorite yttria stabilized zirconia (YSZ) film synthesis by combustion chemical vapour deposition(C-CVD)
Baban P. Dhonge, Tom Mathews, S. Rajagopalan, S. Dash, S. Dhara, A. K. Tyagi
Proceedings of the International Conference on Nanoscience Engineering and Technology Iconset 2011, 2011
Gallium oxide nanoparticle induced inhibition of bacterial adhesion and biofilm formation
P. Sriyutha Murthy, V. P. Venugopalan, Prasana Sahoo, S. Dhara, A. Das, A. K. Tyagi, Garima Saini
Proceedings of the International Conference on Nanoscience Engineering and Technology Iconset 2011, 2011
Antibiofilm activity of nano sized CuO
P. Sriyutha Murthy, V.P. Venugopalan, Das D. Arunya, S. Dhara, R. Pandiyan, A.K. Tyagi
Proceedings of the International Conference on Nanoscience Engineering and Technology Iconset 2011, 2011
Vibrational properties of CuO nanoparticles synthesized by hydrothermal technique
Soumee Chakraborty, A. Das, M. Rigana Begum, S. Dhara, A. K. Tyagi, Alka B. Garg, R. Mittal, R. Mukhopadhyay
Aip Conference Proceedings, 2011
Resonant exciton-phonon coupling in ZnO nanorods at room temperature
Soumee Chakraborty, S. Dhara, T. R. Ravindran, S. Sarkar Pal, M. Kamruddin, A. K. Tyagi
Aip Advances, 2011
Nanoscale gate insulator for organic field effect transistor applications
A. DAS, S. RAJAGOPALAN, S. DHARA, K. PRABAKAR, S. DASH, A. K. TYAGI, BALDEV RAJ
International Journal of Nanoscience, 2011
Enhanced surface potential variation on nanoprotrusions of GaN microbelt as a probe for humidity sensing
Prasana Sahoo, Douglas Soares Oliveira, Mônica Alonso Cotta, Sandip Dhara, S. Dash, A. K. Tyagi, Baldev Raj
Journal of Physical Chemistry C, 2011
Optical properties of InxGa1-xP/InP grown at high fluence Ga+ implantation on InP using focused ion beam
Hsin-Chiao Fang, Chuan-Pu Liu, Sandip Dhara
Nuclear Instruments and Methods in Physics Research Section B Beam Interactions with Materials and Atoms, 2011
Air trapped nanocavity induced superhydrophobicity on GaN microbelt
Prasana Sahoo, S. Dhara, S. Dash, Baldev Raj, I. Manna, A. K. Tyagi
Applied Physics Letters, 2011
One dimensional GaN nanostructures: Growth kinetics and applications
Prasana Sahoo, Sandip Dhara, Sitaram Dash, Ashok K. Tyagi
Nanoscience and Nanotechnology Asia, 2011
Surface optical Raman modes in GaN nanoribbons
Santanu Bhattacharya, Anindya Datta, Sandip Dhara, Dipankar Chakravorty
Journal of Raman Spectroscopy, 2011
Focused ion beam induced nanojunction and defect doping as a building block for nanoscale electronics in GaN nanowires
S. Dhara, C. Y. Lu, C. T. Wu, C. W. Hsu, W. S. Tu, K. H. Chen, Y. L. Wang, L. C. Chen, Baldev Raj
Journal of Physical Chemistry C, 2010
Growth orientation dependent hardness for epitaxial wurtzite InN Films
Satender Kataria, Ting-Wei Liu, Ching-Lien Hsiao, Sandip Dhara, Li-Chyong Chen, Kuei-Hsein Chen, Sitaram Dash, Ashok Kumar Tyagi
Journal of Nanoscience and Nanotechnology, 2010
Direct observation of amophization in load rate dependent nanoindentation studies of crystalline Si
C. R. Das, S. Dhara, Yeau-Ren Jeng, Ping-Chi Tsai, H. C. Hsu, Baldev Raj, A. K. Bhaduri, S. K. Albert, A. K. Tyagi, L. C. Chen, K. H. Chen
Applied Physics Letters, 2010
Confinement effects of CdSe nanocrystals intercalated into mesoporous silica
Shu-Fang Chen, Chuan-Pu Liu, Andrei A. Eliseev, Dmitry I. Petukhov, Sandip Dhara
Applied Physics Letters, 2010
Raman scattering from surface optical phonon in diameter modulated AlN nanotips
Satyaprakash Sahoo, S. Dhara, A. K. Arora, R. Krishnan, P. Chandramohan, M. P. Srinivasan
Applied Physics Letters, 2010
Raman probe to estimate surface energies of embedded semiconductor nanostructures
S. Dhara, P. Magudapathy, K. G. M. Nair, Baldev Raj
Journal of Raman Spectroscopy, 2010
Multiphonon probe in ZnS quantum dots
S. Dhara, A. K. Arora, Santanu Bera, Jay Ghatak
Journal of Raman Spectroscopy, 2010
Surface optical modes in GaN nanowires
Prasana Sahoo, S. Dhara, S. Dash, A.K. Tyagi, Baldev Raj, C.R. Das, P. Chandramohan, M.P. Srinivasan
International Journal of Nanotechnology, 2010
A complete Raman mapping of phase transitions in Si under indentation
C. R. Das, H. C. Hsu, S. Dhara, A. K. Bhaduri, B. Raj, L. C. Chen, K. H. Chen, S. K. Albert, A. Ray, Y. Tzeng
Journal of Raman Spectroscopy, 2010
Phonon confinement in stressed silicon nanocluster
Satyaprakash Sahoo, S. Dhara, S. Mahadevan, A. K. Arora
Journal of Nanoscience and Nanotechnology, 2009
X-ray reflectivity studies on DLC films deposited by microwave ECR CVD: Effect of substrate bias
S.B. Singh, A.K. Poswal, M. Pandey, R.B. Tokas, N. Chand, S. Dhara, B. Sundaravel, K.G.M. Nair, N.K. Sahoo, D.S. Patil
Surface and Coatings Technology, 2009
Growth of two-dimensional GaN in Na-4 mica nanochannels
Santanu Bhattacharya, Anindya Datta, Sandip Dhara, Dipankar Chakravorty
Journal of Physics D Applied Physics, 2009
Phonon confinement and substitutional disorder in Cd1-xZnxS nanocrystals
Satyaprakash Sahoo, S. Dhara, V. Sivasubramanian, S. Kalavathi, A. K. Arora
Journal of Raman Spectroscopy, 2009
Surface optical phonon modes in ternary aligned crystalline InGaN/GaN multi-quantum-well nanopillar arrays
Shang‐En Wu, S. Dhara, Tao‐Hung Hsueh, Yi‐Feng Lai, Cheng‐Yu Wang, Chuan‐Pu Liu
Journal of Raman Spectroscopy, 2009
The mechanism of the recrystallization process in epitaxial GaN under dynamic stress field: Atomistic origin of planar defect formation
C. R. Das, S. Dhara, H. C. Hsu, L. C. Chen, Y. R. Jeng, A. K. Bhaduri, Baldev Raj, K. H. Chen, S. K. Albert
Journal of Raman Spectroscopy, 2009
Surface optical Raman modes in InN nanostructures
Satyaprakash Sahoo, M. S. Hu, C. W. Hsu, C. T. Wu, K. H. Chen, L. C. Chen, A. K. Arora, S. Dhara
Applied Physics Letters, 2008
Mechanism of bright red emission in Si nanoclusters
S Dhara, C-Y Lu, K G M Nair, K-H Chen, C-P Chen, Y-F Huang, C David, L-C Chen, Baldev Raj
Nanotechnology, 2008
Excitation energy dependence of electron-phonon interaction in ZnO nanoparticles
Satyaprakash Sahoo, V. Sivasubramanian, S. Dhara, A.K. Arora
Solid State Communications, 2008
Recrystallization of epitaxial GaN under indentation
S. Dhara, C. R. Das, H. C. Hsu, Baldev Raj, A. K. Bhaduri, L. C. Chen, K. H. Chen, S. K. Albert, Ayan Ray
Applied Physics Letters, 2008
Resonance Raman study of He+ ion implanted nanostructured ZnS
S. Saravana Kumar, M. Abdul Khadar, K. G. M. Nair, S. Dhara, P. Magudapathy
Journal of Raman Spectroscopy, 2008
Long-range ferromagnetic ordering at room temperature in Co+ implanted TiO2 nanorods
S Dhara, J J Wu, G Mangamma, S Bera, C T Wu, P Magudapathy, C C Yu, M Kamruddin, K G M Nair, A K Tyagi, L C Chen, K H Chen
Nanotechnology, 2007
Formation and growth of embedded indium nanoclusters by In2+ implantation in silica
P. Santhana Raman, K.G.M. Nair, R. Kesavamoorthy, B.K. Panigrahi, S. Dhara, V. Ravichandran
Applied Physics A Materials Science and Processing, 2007
Multiphonon Raman scattering in GaN nanowires
S. Dhara, Sharat Chandra, G. Mangamma, S. Kalavathi, P. Shankar, K. G. M. Nair, A. K. Tyagi, C. W. Hsu, C. C. Kuo, L. C. Chen, K. H. Chen, K. K. Sriram
Applied Physics Letters, 2007
Formation, dynamics, and characterization of nanostructures by ion beam irradiation
S. Dhara
Critical Reviews in Solid State and Materials Sciences, 2007
Raman measurements and stress analysis in gallium ion-implanted gallium nitride epitaxial layers on sapphire
S. Mal, A. Singha, S. Dhara, A. Roy
Thin Solid Films, 2006
Photoluminescence and Raman studies of ZnS nanoparticles implanted with Cu+ ions
S. Saravana Kumar, M. Abdul Khadar, S.K. Dhara, T.R. Ravindran, K.G.M. Nair
Nuclear Instruments and Methods in Physics Research Section B Beam Interactions with Materials and Atoms, 2006
Nitrogen ion beam synthesis of InN in InP(100) at elevated temperature
S. Dhara, P. Magudapathy, R. Kesavamoorthy, S. Kalavathi, V. S. Sastry, K. G. M. Nair, G. M. Hsu, L. C. Chen, K. H. Chen, K. Santhakumar, T. Soga
Applied Physics Letters, 2006
Ferromagnetism in cobalt-doped n-GaN
S. Dhara, B. Sundaravel, K. G. M. Nair, R. Kesavamoorthy, M. C. Valsakumar, T. V. Chandrasekhar Rao, L. C. Chen, K. H. Chen
Applied Physics Letters, 2006
Optical characterization of GaN by N+ implantation into GaAs at elevated temperature
S. Dhara, P. Magudapathy, R. Kesavamoorthy, S. Kalavathi, K. G. M. Nair, G. M. Hsu, L. C. Chen, K. H. Chen, K. Santhakumar, T. Soga
Applied Physics Letters, 2005
Formation and in situ dynamics of metallic nanoblisters in Ga+ implanted GaN nanowires
A Datta, S Dhara, S Muto, C W Hsu, C T Wu, C H Shen, T Tanabe, T Maruyama, K H Chen, L C Chen, Y L Wang
Nanotechnology, 2005
Mechanism of nanoblister formation in Ga+ self-ion implanted GaN nanowires
S. Dhara, A. Datta, C. T. Wu, K. H. Chen, Y. L. Wang, S. Muto, T. Tanabe, C. H. Shen, C. W. Hsu, L. C. Chen, T. Maruyama
Applied Physics Letters, 2005
Blue luminescence of Au nanoclusters embedded in silica matrix
S. Dhara, Sharat Chandra, P. Magudapathy, S. Kalavathi, B. K. Panigrahi, K. G. M. Nair, V. S. Sastry, C. W. Hsu, C. T. Wu, K. H. Chen, L. C. Chen
Journal of Chemical Physics, 2004
'Spillout' effect in gold nanoclusters embedded in c-Al 2O 3(0001) matrix
S. Dhara, B. Sundaravel, T.R. Ravindran, K.G.M. Nair, C. David, B.K. Panigrahi, P. Magudapathy, K.H. Chen
Chemical Physics Letters, 2004
Comment on "Gold nanowires from silicon nanowire templates" [appl. phys. lett. 84, 407 (2004)]
S. Dhara, K. G. M. Nair
Applied Physics Letters, 2004
Hexagonal-to-cubic phase transformation in GaN nanowires by Ga+ implantation
S. Dhara, A. Datta, C. T. Wu, Z. H. Lan, K. H. Chen, Y. L. Wang, C. W. Hsu, C. H. Shen, L. C. Chen, C. C. Chen
Applied Physics Letters, 2004
Ion-beam mixing in an immiscible Fe/Ag multilayer film
S. Amirthapandian, B. K. Panigrahi, A. K. Srivastava, S. Dhara, Ajay Gupta, V. S. Sastry, R. V. Nandedkar, K. G. M. Nair, A. Narayanasamy
Journal of Applied Physics, 2004
Blueshift of yellow luminescence band in self-ion-implanted n-GaN nanowire
S. Dhara, A. Datta, C. T. Wu, Z. H. Lan, K. H. Chen, Y. L. Wang, Y. F. Chen, C. W. Hsu, L. C. Chen, H. M. Lin, C. C. Chen
Applied Physics Letters, 2004
Nanohomojunction (GaN) and nanoheterojunction (InN) nanorods on one-dimensional GaN nanowire substrates
Z. H. Lan, C. H. Liang, C. W. Hsu, C. T. Wu, H. M. Lin, S. Dhara, K. H. Chen, L. C. Chen, C. C. Chen
Advanced Functional Materials, 2004
Characterization of Nanodome on GaN Nanowires Formed with Ga Ion Irradiation
Shunsuke Muto, Sandip Dhara, Anindya Datta, Chi-Wei Hsu, Chin-Ting Wu, Ching-Hsing Shen, Li-Chyong Chen, Kuei-Hsien Chen, Yuh-Lin Wang, Tetsuo Tanabe, Tadashi Maruyama, Hong-Ming Lin, Chia-Chun Chen
Materials Transactions, 2004
Interface energy of Au7Si grown in the interfacial layer of truncated hexagonal dipyramidal Au nanoislands on polycrystalline-silicon
J. S. Wu, Y. F. Chen, S. Dhara, C. T. Wu, K. H. Chen, L. C. Chen
Applied Physics Letters, 2003
Phase formation in ion irradiated metal-organic complexes of copper-bis-acetylacetonate
S. Dhara, P. Magudapathy, G. L. N. Reddy, K. G. M. Nair, B. K. Panigrahi
Physica Status Solidi A Applied Research, 2003
Quasiquenching size effects in gold nanoclusters embedded in silica matrix
S Dhara, R Kesavamoorthy, P Magudapathy, M Premila, B.K Panigrahi, K.G.M Nair, C.T Wu, K.H Chen, L.C Chen
Chemical Physics Letters, 2003
Enhanced dynamic annealing in Ga+ ion-implanted GaN nanowires
S. Dhara, A. Datta, C. T. Wu, Z. H. Lan, K. H. Chen, Y. L. Wang, L. C. Chen, C. W. Hsu, H. M. Lin, C. C. Chen
Applied Physics Letters, 2003
Growth and optical properties of self-organized Au2Si nanospheres pea-podded in a silicon oxide nanowire
J.S. Wu, S. Dhara, C.T. Wu, K.H. Chen, Y.F. Chen, L.C. Chen
Advanced Materials, 2002
Low field magnetoconductance studies in aggregated Al nano-clusters
S. Dhara, B.K. Panigrahi, P. Magudapathy, K.G.M. Nair
Journal of Alloys and Compounds, 2001
Electron transport across fractal-like nanocrystalline clusters in N+ ion-beam induced poly(phenylene oxide)
A. Das, S. Dhara, A. Patnaik
Journal of Chemical Physics, 2001
Electrical transport studies of Ag nanoclusters embedded in glass matrix
P. Magudapathy, P. Gangopadhyay, B.K. Panigrahi, K.G.M. Nair, S. Dhara
Physica B Condensed Matter, 2001
Cobaltous oxide infiltrated yttrium iron garnet thin films as high-coercivity media for data storage
A. C. Rastogi, V. N. Moorthy, Sandip Dhara
Applied Physics Letters, 2001
A novel route of synthesis of aluminium nano-aggregates: An ion beam modification in metal-organic complex
S Dhara, B K Panigrahi, K G M Nair, P Magudapathy, Saroja Saibaba, G L N Reddy
Journal of Physics D Applied Physics, 2001
Surface morphology of the Ar+ ion-irradiated Ag/Si(1 1 1) system
D.K Sarkar, S Dhara, K.G.M Nair, S Chowdhury
Nuclear Instruments and Methods in Physics Research Section B Beam Interactions with Materials and Atoms, 2000
Studies of phase formation and chemical states of the ion beam mixed Ag/Si(1 1 1) system
D.K. Sarkar, S. Dhara, K.G.M. Nair, S. Chowdhury
Nuclear Instruments and Methods in Physics Research Section B Beam Interactions with Materials and Atoms, 2000
Ion beam mixing and room temperature silicidation of Cu/Si(111) system by Ar+ ion irradiation
D.K. Sarkar, S. Dhara, K.G.M. Nair, S. Chaudhury
Nuclear Instruments and Methods in Physics Research Section B Beam Interactions with Materials and Atoms, 2000
Structural instability of the ion beam-mixed Au/Si(1 1 1) systems at elevated temperatures
D.K Sarkar, S Dhara, A Gupta, K.G.M Nair, S Chaudhury
Nuclear Instruments and Methods in Physics Research Section B Beam Interactions with Materials and Atoms, 2000
Structure and growth of yttrium iron garnet thin films with enhanced magnetic properties by metalorganic chemical vapor deposition
Journal of Materials Research, 1999
N+ion-target interactions in PPO polymer: A structural characterization
A Das, S Dhara, A Patnaik
Nuclear Instruments and Methods in Physics Research Section B Beam Interactions with Materials and Atoms, 1999
N+ beam induced nano-cluster formation in poly(2,6-dimethyl phenylene oxide) thin films
A. Das, G. Ghosh, S. Dhara, A. Patnaik
Materials Letters, 1999
Effect of energetic charged particles on laser ablated thin film of poly(phenylene sulfide)
A. Das, N. Sivakumar, M. Joseph, S. Dhara, A. Patnaik
Radiation Physics and Chemistry, 1998
Physical and chemical implications of 100 keV H+ implantation of laser ablated PPS thin films
A. Das, S. Bera, S. Dhara, A. Patnaik
Nuclear Instruments and Methods in Physics Research Section B Beam Interactions with Materials and Atoms, 1998
Gixrd and xps study of the ion beam mixed Au/Si(1 1 1) system
D.K. Sarkar, Santanu Bera, S. Dhara, S.V. Narasimhan, S. Chowdhury, K.G.M. Nair
Solid State Communications, 1998
XPS studies on suicide formation in ion beam irradiated Au/Si system
D.K Sarkar, Santanu Bera, S Dhara, K.G.M Nair, S.V Narasimhan, S Chowdhury
Applied Surface Science, 1997
Magnetic studies of Ce4+ compensated Co-doped yttrium iron garnet thin film grown by chemical vapor deposition
Sandip Dhara, A. C. Rastogi, B. K. Das
Journal of Applied Physics, 1996
Low-temperature dynamic susceptibility of thiTe films
Sharat Chandra, L. K. Malhotra, Sandip Dhara, A. C. Rastogi
Physical Review B Condensed Matter and Materials Physics, 1996
Effect of post deposition reduction treatment of YIG thin films on stabilizing cubic garnet phase
A C Rastogi, V N Moorthy, Sandip Dhara, H P Gupta, B R Awasthy, B K Das
Bulletin of Materials Science, 1996
Medium resolution magneto-optical Faraday rotation measurement system
Sandip Dhara, V N Moorthy, A C Rastogi, B K Das
Bulletin of Materials Science, 1995
Magnetic study above the curie temperature of γ-Fe2O3 in determining the dispersion nature of Co2+ ions in Co-modified γ-Fe2O3 thin films
B K Das, Sandip Dhara, A C Rastogi
Bulletin of Materials Science, 1995
Growth, magnetic properties and the effect of cobalt addition in metal-organic chemical vapour deposited (MOCVD) gamma iron oxide thin films for magnetic recording applications
Sandip Dhara, A. C. Rastogi, B. K. Das
Bulletin of Materials Science, 1994
Parametric investigation for direct chemical vapour deposition of magnetite films
Sandip Dhara, B.R. Awasthy, A.C. Rastogi, B.K. Das, N.V. Gelfond, N.E. Fedotova, A.F. Bykov, I.K. Igumenov
Journal of Magnetism and Magnetic Materials, 1994
Effect of deposition orientation on the structure and magnetic properties of chemical vapour deposited iron oxide thin films
Sandip Dhara, A.C. Rastogi, B.K. Das
Thin Solid Films, 1994
Direct deposition of highly coercive gamma iron oxide thin films for magnetic recording
Sandip Dhara, A. C. Rastogi, B. K. Das
Journal of Applied Physics, 1993
Structural and magnetic properties of chemically vapour deposited iron oxide thin films
Sandip Dhara, G.L. Malhotra, A.C. Rastogi, B.K. Das
Thin Solid Films, 1992
Magnetic properties of chemical vapour deposited cobalt doped gamma iron oxide thin films
Sandip Dhara, Ravinder Kumar Kotnala, Alok Chandra Rastogi Alok Chandra Rastogi, Bijoy Kishore Das Bijoy Kishore Das
Japanese Journal of Applied Physics, 1992

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