Dr. Shruthi B

Scopus Publications

Structural, AC conductivity, dielectric and catalytic behavior of calcium oxide nanoparticles derived from waste eggshells
B. J. Madhu, H. Bhagyalakshmi, B. Shruthi, M. Veerabhadraswamy
SN Applied Sciences, 2021
Calcium Oxide (CaO) nanoparticles have been synthesized from waste eggshells (ES) as a source of calcium by solution combustion technique using muffle furnace and microwave oven. CaO nanoparticles obtained using muffle furnace (CaO-F) and via microwave oven (CaO-M) were characterized using X-ray diffraction, scanning electron microscopy, energy dispersive spectroscopy, AC conductivity and dielectric studies to correlate the physico-chemical behavior. The frequency dependence of AC conductivity, the permittivity (ε′) and dielectric loss tangent (D) studies have been undertaken in the frequency range 50 Hz–5 MHz at room temperature. AC conductivity was found to enhance with an increase in the frequency. The ε′ was found to decrease initially with the frequency and finally reaching a constant value at higher frequencies. The frequency dependence of D was found to exhibit a resonance peak in the studied frequency region. Catalytic activity of CaO-M was correlated with its dielectric behavior.
Structural, Dielectric and AC Conductivity Behavior of Multicomponent TeO2-ZnO-Li2O-Na2O-B2O3 Glasses
B. Shruthi, , B. J. Madhu, and
Journal of Nano and Electronic Physics, 2021
Journal of Nano- and Electronic Physics. Scientific journal. ISSN: 2077-6772. Journal abbreviation: J. Nano- Electron. Phys. No page charges. All articles are freely available on-line. Issued 4 times per year. Publisher: Sumy State University. (Sumy, Ukraine)
Influence of Zinc Oxide Nanoparticles on the Optical, Dielectric and Electromagnetic Interference Shielding Performance of Polystyrene Films
B. J. Madhu, Mohammed Irfan, A. Manjunath, N. P. Divya, S. S. Mahesh, B. Shruthi
Research Anthology on Synthesis Characterization and Applications of Nanomaterials, 2021
In the present work, Zinc oxide (ZnO) nanoparticles are synthesized using solvothermal technique. Polystyrene-ZnO (PS/ZnO) nanocomposite films are synthesized by solution casting procedure. PS/ZnO films are analyzed by XRD, FTIR and UV-Vis spectroscopic techniques. The addition of ZnO into the PS film is found to decrease the optical band gap (OBG) from 4.07 eV to 1.86 eV. Frequency dependence of dielectric constant (ε′), loss tangent (tanδ), ac conductivity (σac) and electromagnetic (EM) interference shielding effectiveness (SE) studies have been undertaken on the pure PS and PS/ZnO films. Insertion of ZnO into pure PS polymer matrix is found to enhance ε′, tanδ, σac, and SE considerably. The ε′ and tanδ were reduced with an enhancement in the frequency. σac of PS/ZnO nanocomposites was enhanced with rise in frequency and electrical conduction process in PS/ZnO film is in agreement with an electron-hopping model. EM interference SE is reduced with rise in the frequency. PS/ZnO films were proven as a favorable functional substance for the absorbing of EM waves at lower frequencies.
Dielectric, AC conductivity and electromagnetic interference shielding behavior of graphite oxide/polyvinylpyrrolidone composites
B. Shruthi, B. J. Madhu
SN Applied Sciences, 2020
Structural, dielectric and magnetic studies on polyaniline-decorated Ni0.5Cu0.5Fe2O4 nanoferrites for electromagnetic interference shielding applications
M. Gurusiddesh, B. J. Madhu, G. J. Shankaramurthy, B. Shruthi
Applied Physics A Materials Science and Processing, 2020
Influence of zinc oxide nanoparticles on the optical, dielectric and electromagnetic interference shielding performance of polystyrene films
B. J. Madhu, Mohammed Irfan, A. Manjunath, N. P. Divya, S. S. Mahesh, B. Shruthi
International Journal of Surface Engineering and Interdisciplinary Materials Science, 2020
In the present work, Zinc oxide (ZnO) nanoparticles are synthesized using solvothermal technique. Polystyrene-ZnO (PS/ZnO) nanocomposite films are synthesized by solution casting procedure. PS/ZnO films are analyzed by XRD, FTIR and UV-Vis spectroscopic techniques. The addition of ZnO into the PS film is found to decrease the optical band gap (OBG) from 4.07 eV to 1.86 eV. Frequency dependence of dielectric constant (ε′), loss tangent (tanδ), ac conductivity (σac) and electromagnetic (EM) interference shielding effectiveness (SE) studies have been undertaken on the pure PS and PS/ZnO films. Insertion of ZnO into pure PS polymer matrix is found to enhance ε′, tanδ, σac, and SE considerably. The ε′ and tanδ were reduced with an enhancement in the frequency. σac of PS/ZnO nanocomposites was enhanced with rise in frequency and electrical conduction process in PS/ZnO film is in agreement with an electron-hopping model. EM interference SE is reduced with rise in the frequency. PS/ZnO films were proven as a favorable functional substance for the absorbing of EM waves at lower frequencies.
Graphite oxide/Polyvinyl alcohol nanocomposites with excellent dielectric and AC conductivity properties for efficient electromagnetic interference shielding
B.J. Madhu, B. Chandan, Samreen Banu I. Deshnoor, B. Shruthi, D. Nagaraja, G.H. Virupakshappa
Materials Today Proceedings, 2018
Synthesis, spectroscopic analysis and electrochemical performance of modified β-nickel hydroxide electrode with CuO
B. Shruthi, B.J. Madhu, V. Bheema Raju, S. Vynatheya, B.Veena Devi, G.V. Jayashree, C.R. Ravikumar
Journal of Science Advanced Materials and Devices, 2017
In the present work, a modified β-nickel hydroxide (β-Ni(OH)2) electrode material with CuO has been prepared using a co-precipitation method. The structure and property of the modified β-Ni(OH)2 with CuO were characterized by X-ray diffraction (XRD), Fourier Transform infra-red (FT-IR), Raman and thermal gravimetric-differential thermal analysis (TG-DTA) techniques. The results of the FT-IR spectroscopy and TG-DTA indicate that the modified β-Ni(OH)2 electrode materials contain intercalated water molecules and anions. A pasted–type electrode was prepared using nickel hydroxide powder as the main active material on a nickel sheet as a current collector. Cyclic voltammetry (CV) and Electrochemical impedance spectroscopy (EIS) studies were undertaken to assess the electrochemical behavior of pure β-Ni(OH)2 and modified β-Ni(OH)2 electrode with CuO in a 6 M KOH electrolyte. The addition of CuO into β-nickel hydroxide was found to enhance the reversibility of the electrode reaction and also increase the separation of the oxidation current peak of the active material from the oxygen evolution current. The modified nickel hydroxide with CuO was also found to exhibit a higher proton diffusion coefficient and a lower charge transfer resistance. These findings suggest that the modified β-Ni(OH)2 with CuO possesses an enhanced electrochemical response and thus can be recognized as a promising candidate for battery electrode applications.
Structural, dielectric, ac conductivity and electromagnetic shielding properties of polyaniline/Ni0.5Zn0.5Fe2O4 composites
B. J. Madhu, M. Gurusiddesh, T. Kiran, B. Shruthi, H. S. Jayanna
Journal of Materials Science Materials in Electronics, 2016
Synthesis, Characterization and Dielectric Behavior of Polyaniline/Ni0.5Zn0.5Fe2O4 Nanocomposites
B. J. Madhu, T. Kiran, M. Gurusiddesh, B. Shruthi
Macromolecular Symposia, 2016
Summary A conducting polymer, polyaniline (PANI)/Ni0.5Zn0.5Fe2O4 nanocomposites were synthesized by a simple and inexpensive one-step in-situ polymerization of Aniline monomer with Ni0.5Zn0.5Fe2O4 nanoparticles, where Ni0.5Zn0.5Fe2O4 nanoparticles were prepared via simple solution combustion method using stoichiometric composition of nickel nitrate, zinc nitrate and ferric nitrates as oxidizers and urea as a fuel. PANI/Ni0.5Zn0.5Fe2O4 nanocomposites were characterized by X-ray diffraction (XRD) analysis, Fourier transform infrared (FTIR) spectroscopy, Scanning electron microscopy (SEM), Energy dispersive X-ray (EDX) spectroscopy and Thermal gravimetric-differential thermal analysis (TG-DTA). Frequency dependence of dielectric constant (ϵ′), dielectric loss tangent (tanδ) and a. c. conductivity (σac) studies have been undertaken on the PANI/Ni0.5Zn0.5Fe2O4 nanocomposites in the frequency range 100 Hz–5 MHz at room temperature. Dielectric properties such as dielectric constant (ϵ′) and dielectric loss tangent (tanδ) are found to decrease with the increase in the frequency. Further, a. c. conductivity (σac) of the PANI/Ni0.5Zn0.5Fe2O4 nanocomposites was found to increase with an increase in the frequency. Observed variation in the a. c. conductivity with the frequency has been understood on the basis of electron hopping model.
Influence of TiO2 on the electrochemical performance of pasted type β-nickel hydroxide electrode in alkaline electrolyte
B. Shruthi, B.J. Madhu, V. Bheema Raju
Journal of Energy Chemistry, 2016
Influence of MgO on the electrochemical performance of nickel electrode in alkaline aqueous electrolyte
B. Shruthi, B. J. Madhu, V. Bheema Raju, S. Vynatheya, B. Veena Devi
Journal of New Materials for Electrochemical Systems, 2016
Influence of zinc additive and pH on electrochemical behaviour of β-nickel hydroxide in nickel based secondary batteries
C.R. Ravi Kumar, P. Kotteeswaran, M.S. Santosh, B. Shruthi, V. Bheemaraju, M.S. Shivakumara, H.P. Nagaswarupa
Asian Journal of Chemistry, 2016
Microstructure and electrochemical distinctiveness of β-nickel hydroxide by means of zinc additive and pH
C.R. Ravi Kumar, P. Kotteeswaran, V. Bheema Raju, B. Shruthi, M.S. Santosh, H.P. Nagaswarupa, M.S. Shivkumar, A. Murugan
Asian Journal of Chemistry, 2016
Synthesis, spectroscopic and electrochemical performance of pasted β-nickel hydroxide electrode in alkaline electrolyte
B. Shruthi, V. Bheema Raju, B.J. Madhu
Spectrochimica Acta Part A Molecular and Biomolecular Spectroscopy, 2015
Structural, dielectric and electromagnetic shielding properties of Ni-Cu nanoferrite/PVP composites
B.J. Madhu, S.T. Ashwini, B. Shruthi, B.S. Divyashree, A. Manjunath, H.S. Jayanna
Materials Science and Engineering B, 2014
Structural, dielectric and AC conductivity properties of Co2+ doped mixed alkali zinc borate glasses
B. J. Madhu, Syed Asma Banu, G. A. Harshitha, T. M. Shilpa, B. Shruthi
Aip Conference Proceedings, 2013
Anomalous dielectric and AC conductivity behavior of the nanocrystalline Ni-Cu ferrite synthesized via combustion method
B. J. Madhu, B. N. Rashmi, Arshiya Banu, G. A. Seema, B. Shruthi, H. S. Jayanna
Aip Conference Proceedings, 2013
Frequency dependence of dielectric parameters and A. C. conductivity of Mg-Co-Zn nanoferrites synthesized via combustion method
B.J. Madhu, M. Kavya, S. Razika Banu, B. Shruthi, C.P. Sowmya, H.S. Jayanna
Advanced Materials Research, 2012
Dielectric behavior and A. C. conductivity studies on nickel nanoferrites synthesized by solution combustion method
B.J. Madhu, V. Jagadeesha Angadi, H. Mallikarjuna, S.O. Manjunatha, B. Shruthi, R. Madhu Kumar
Advanced Materials Research, 2012
Dielectric behavior and a. c. conductivity studies on Co 0.4Ni 0.6Fe 2O 4 nanoparticles synthesized via combustion method
B. J. Madhu, K. Bindu, S. Hamsa, C. P. Sowmya, B. Shruthi
Proceedings of the International Conference on Nanoscience Engineering and Technology Iconset 2011, 2011
Dielectric behavior and a. c. conductivity studies on cobalt nanoferrites synthesized using combustion method
B. J. Madhu, S. Razikha Banu, M. Kavya, B. Shruthi, M. S. Vasanthkumar, T. V. Sannamma, M. Surendra
2011 International Conference on Nanoscience Technology and Societal Implications Nstsi11, 2011

RECENT SCHOLAR PUBLICATIONS

Structural, AC conductivity, dielectric and catalytic behavior of calcium oxide nanoparticles derived from waste eggshells
BJ Madhu, H Bhagyalakshmi, B Shruthi, M Veerabhadraswamy
SN Applied Sciences 3 (6), 1-7 , 2021
2021
Citations: 39
Structural, Dielectric and AC Conductivity Behavior of Multicomponent TeO2-ZnO-Li2O-Na2O-B2O3 Glasses
B Shruthi, BJ Madhu
Sumy State University , 2021
2021
Citations: 4
Dielectric, AC conductivity and electromagnetic interference shielding behavior of graphite oxide/polyvinylpyrrolidone composites
B Shruthi, BJ Madhu
SN Applied Sciences 2 (4), 1-5 , 2020
2020
Citations: 4
Structural, dielectric and magnetic studies on polyaniline-decorated Ni 0.5 Cu 0.5 Fe 2 O 4 nanoferrites for electromagnetic interference shielding applications
M Gurusiddesh, BJ Madhu, GJ Shankaramurthy, B Shruthi
Applied Physics A 126 (2), 85 , 2020
2020
Citations: 12
Influence of Zinc Oxide Nanoparticles on the Optical, Dielectric and Electromagnetic Interference Shielding Performance of Polystyrene Films
BJ Madhu, M Irfan, A Manjunath, NP Divya, SS Mahesh, B Shruthi
International Journal of Surface Engineering and Interdisciplinary Materials … , 2020
2020
Citations: 3
Graphite oxide/Polyvinyl alcohol nanocomposites with excellent dielectric and AC conductivity properties for efficient electromagnetic interference shielding
BJ Madhu, B Chandan, SBI Deshnoor, B Shruthi, D Nagaraja, ...
Materials Today: Proceedings 5 (10), 21517-21522 , 2018
2018
Citations: 4
Synthesis, spectroscopic analysis and electrochemical performance of modified β-nickel hydroxide electrode with CuO
B Shruthi, BJ Madhu, VB Raju, S Vynatheya, BV Devi, GV Jayashree, ...
Journal of Science: Advanced Materials and Devices 2 (1), 93-98 , 2017
2017
Citations: 94
Structural, dielectric, ac conductivity and electromagnetic shielding properties of polyaniline/Ni 0.5 Zn 0.5 Fe 2 O 4 composites
BJ Madhu, M Gurusiddesh, T Kiran, B Shruthi, HS Jayanna
Journal of Materials Science: Materials in Electronics 27 (8), 7760-7766 , 2016
2016
Citations: 51
Influence of MgO on the Electrochemical Performance of Nickel Electrode in Alkaline Aqueous Electrolyte.
B Shruthi, BJ Madhu, VB Raju, S Vynatheya, BV Devi
Journal of New Materials for Electrochemical Systems 19 (3) , 2016
2016
Synthesis, Characterization and Dielectric Behavior of Polyaniline/Ni 0.5 Zn 0.5 Fe 2 O 4 Nanocomposites
BJ Madhu, T Kiran, M Gurusiddesh, B Shruthi
Macromolecular Symposia 361 (1), 24-29 , 2016
2016
Citations: 5
Microstructure and Electrochemical Distinctiveness of [Beta]-Nickel Hydroxide by means of Zinc Additive and pH
CRR Kumar, P Kotteeswaran, VB Raju, B Shruthi, MS Santosh, ...
Asian Journal of Chemistry 28 (3), 575 , 2016
2016
Citations: 5
Influence of Zinc Additive and pH on Electrochemical Behaviour of [Beta]-Nickel Hydroxide in Nickel Based Secondary Batteries
CRR Kumar, P Kotteeswaran, MS Santosh, B Shruthi, V Bheemaraju, ...
Asian Journal of Chemistry 28 (1), 222 , 2016
2016
Citations: 4
Influence of TiO2 on the electrochemical performance of pasted type β-nickel hydroxide electrode in alkaline electrolyte
B Shruthi, BJ Madhu, VB Raju
Journal of energy chemistry 25 (1), 41-48 , 2016
2016
Citations: 24
Synthesis, spectroscopic and electrochemical performance of pasted β-nickel hydroxide electrode in alkaline electrolyte
B Shruthi, VB Raju, BJ Madhu
Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 135, 683-689 , 2015
2015
Citations: 57
Structural, dielectric and electromagnetic shielding properties of Ni–Cu nanoferrite/PVP composites
BJ Madhu, ST Ashwini, B Shruthi, BS Divyashree, A Manjunath, ...
Materials Science and Engineering: B 186, 1-6 , 2014
2014
Citations: 51
Anomalous dielectric and AC conductivity behavior of the nanocrystalline Ni-Cu ferrite synthesized via combustion method
BJ Madhu, BN Rashmi, A Banu, GA Seema, B Shruthi, HS Jayanna
AIP Conference Proceedings 1512 (1), 1008-1009 , 2013
2013
Citations: 5
Structural, dielectric and AC conductivity properties of doped mixed alkali zinc borate glasses
BJ Madhu, SA Banu, GA Harshitha, TM Shilpa, B Shruthi
AIP Conference Proceedings 1512 (1), 604-605 , 2013
2013
Citations: 2
Dielectric behavior and AC conductivity studies on nickel nanoferrites synthesized by solution combustion method
BJ Madhu, VJ Angadi, H Mallikarjuna, SO Manjunatha, B Shruthi, ...
Advanced Materials Research 584, 299-302 , 2012
2012
Citations: 16
Frequency Dependence of Dielectric Parameters and AC Conductivity of Mg-Co-Zn Nanoferrites Synthesized via Combustion Method
BJ Madhu, M Kavya, S Razika Banu, B Shruthi, CP Sowmya, HS Jayanna
Advanced Materials Research 584, 295-298 , 2012
2012
Citations: 8
Dielectric behavior and AC conductivity studies on cobalt nanoferrites synthesized using combustion method
BJ Madhu, SR Banu, M Kavya, B Shruthi, MS Vasanthkumar, ...
2011 International Conference on Nanoscience, Technology and Societal … , 2011
2011
Citations: 3

MOST CITED SCHOLAR PUBLICATIONS

Synthesis, spectroscopic analysis and electrochemical performance of modified β-nickel hydroxide electrode with CuO
B Shruthi, BJ Madhu, VB Raju, S Vynatheya, BV Devi, GV Jayashree, ...
Journal of Science: Advanced Materials and Devices 2 (1), 93-98 , 2017
2017
Citations: 94
Synthesis, spectroscopic and electrochemical performance of pasted β-nickel hydroxide electrode in alkaline electrolyte
B Shruthi, VB Raju, BJ Madhu
Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 135, 683-689 , 2015
2015
Citations: 57
Structural, dielectric, ac conductivity and electromagnetic shielding properties of polyaniline/Ni 0.5 Zn 0.5 Fe 2 O 4 composites
BJ Madhu, M Gurusiddesh, T Kiran, B Shruthi, HS Jayanna
Journal of Materials Science: Materials in Electronics 27 (8), 7760-7766 , 2016
2016
Citations: 51
Structural, dielectric and electromagnetic shielding properties of Ni–Cu nanoferrite/PVP composites
BJ Madhu, ST Ashwini, B Shruthi, BS Divyashree, A Manjunath, ...
Materials Science and Engineering: B 186, 1-6 , 2014
2014
Citations: 51
Structural, AC conductivity, dielectric and catalytic behavior of calcium oxide nanoparticles derived from waste eggshells
BJ Madhu, H Bhagyalakshmi, B Shruthi, M Veerabhadraswamy
SN Applied Sciences 3 (6), 1-7 , 2021
2021
Citations: 39
Influence of TiO2 on the electrochemical performance of pasted type β-nickel hydroxide electrode in alkaline electrolyte
B Shruthi, BJ Madhu, VB Raju
Journal of energy chemistry 25 (1), 41-48 , 2016
2016
Citations: 24
Dielectric behavior and AC conductivity studies on nickel nanoferrites synthesized by solution combustion method
BJ Madhu, VJ Angadi, H Mallikarjuna, SO Manjunatha, B Shruthi, ...
Advanced Materials Research 584, 299-302 , 2012
2012
Citations: 16
Structural, dielectric and magnetic studies on polyaniline-decorated Ni 0.5 Cu 0.5 Fe 2 O 4 nanoferrites for electromagnetic interference shielding applications
M Gurusiddesh, BJ Madhu, GJ Shankaramurthy, B Shruthi
Applied Physics A 126 (2), 85 , 2020
2020
Citations: 12
Frequency Dependence of Dielectric Parameters and AC Conductivity of Mg-Co-Zn Nanoferrites Synthesized via Combustion Method
BJ Madhu, M Kavya, S Razika Banu, B Shruthi, CP Sowmya, HS Jayanna
Advanced Materials Research 584, 295-298 , 2012
2012
Citations: 8
Synthesis, Characterization and Dielectric Behavior of Polyaniline/Ni 0.5 Zn 0.5 Fe 2 O 4 Nanocomposites
BJ Madhu, T Kiran, M Gurusiddesh, B Shruthi
Macromolecular Symposia 361 (1), 24-29 , 2016
2016
Citations: 5
Microstructure and Electrochemical Distinctiveness of [Beta]-Nickel Hydroxide by means of Zinc Additive and pH
CRR Kumar, P Kotteeswaran, VB Raju, B Shruthi, MS Santosh, ...
Asian Journal of Chemistry 28 (3), 575 , 2016
2016
Citations: 5
Anomalous dielectric and AC conductivity behavior of the nanocrystalline Ni-Cu ferrite synthesized via combustion method
BJ Madhu, BN Rashmi, A Banu, GA Seema, B Shruthi, HS Jayanna
AIP Conference Proceedings 1512 (1), 1008-1009 , 2013
2013
Citations: 5
Structural, Dielectric and AC Conductivity Behavior of Multicomponent TeO2-ZnO-Li2O-Na2O-B2O3 Glasses
B Shruthi, BJ Madhu
Sumy State University , 2021
2021
Citations: 4
Dielectric, AC conductivity and electromagnetic interference shielding behavior of graphite oxide/polyvinylpyrrolidone composites
B Shruthi, BJ Madhu
SN Applied Sciences 2 (4), 1-5 , 2020
2020
Citations: 4
Graphite oxide/Polyvinyl alcohol nanocomposites with excellent dielectric and AC conductivity properties for efficient electromagnetic interference shielding
BJ Madhu, B Chandan, SBI Deshnoor, B Shruthi, D Nagaraja, ...
Materials Today: Proceedings 5 (10), 21517-21522 , 2018
2018
Citations: 4
Influence of Zinc Additive and pH on Electrochemical Behaviour of [Beta]-Nickel Hydroxide in Nickel Based Secondary Batteries
CRR Kumar, P Kotteeswaran, MS Santosh, B Shruthi, V Bheemaraju, ...
Asian Journal of Chemistry 28 (1), 222 , 2016
2016
Citations: 4
Dielectric behavior and a. c. conductivity studies on Co 0.4 Ni 0.6 Fe 2 O 4 nanoparticles synthesized via combustion method
BJ Madhu, K Bindu, S Hamsa, CP Sowmya, A Manjunath, ...
International Conference on Nanoscience, Engineering and Technology (ICONSET … , 2011
2011
Citations: 4
Influence of Zinc Oxide Nanoparticles on the Optical, Dielectric and Electromagnetic Interference Shielding Performance of Polystyrene Films
BJ Madhu, M Irfan, A Manjunath, NP Divya, SS Mahesh, B Shruthi
International Journal of Surface Engineering and Interdisciplinary Materials … , 2020
2020
Citations: 3
Dielectric behavior and AC conductivity studies on cobalt nanoferrites synthesized using combustion method
BJ Madhu, SR Banu, M Kavya, B Shruthi, MS Vasanthkumar, ...
2011 International Conference on Nanoscience, Technology and Societal … , 2011
2011
Citations: 3
Structural, dielectric and AC conductivity properties of doped mixed alkali zinc borate glasses
BJ Madhu, SA Banu, GA Harshitha, TM Shilpa, B Shruthi
AIP Conference Proceedings 1512 (1), 604-605 , 2013
2013
Citations: 2

Dr. Shruthi B

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Scopus Publications

RECENT SCHOLAR PUBLICATIONS

MOST CITED SCHOLAR PUBLICATIONS