Poonam Kumari
@eternaluniversity.edu.in
Assistant Professor, Department of Physics, Akal College of Basic Sciences, Baru Sahib, , Pin-173101, Himachal Pradesh. India
Eternal University,
I am working as Assistant Professor at Eternal University, Baru Sahib from Feb 2016 to June 2018 and got experience as Research Associate Under CSIR R/P at Panjab University SSGRC Hoshiarpur from July 2018 to March 2020; and again rejoined as Assistant Professor at Department of Physics, Eternal University, Baru Sahib from August 2020 to continue .
Publication (SCI/SCOUPUS) = 20
Book Chapter = 2
Patents =4
EDUCATION
Ph.D. (Physics) from school of physics, Shoolini University, Solan in the year of 2016
M.Sc. (Physics) from Punjab University, Chandigarh in the year of 2012.
RESEARCH INTERESTS
Ferroelectrics and Multiferroics
FUTURE PROJECTS
Development of piezoelectric materials for energy harvesting application
Applications Invited
COLLABORATORS
Investigation of magnetoelectric (ME) coupling response in modified multiferroic Nano-composites
The project is focused on ‘Investigation of magnetoelectric (ME) coupling response in modified multiferroic Nano-composites’. This coupling exhibit between two parameters as magnetic and polar orders. It makes possible the manipulation of the magnetic spins by an applied electric field and enhance magnetoelectric effect. For practical applications, ME-MFs with strong ME coupling at room temperature are needed. Strain-mediated ME composites made of magnetostrictive and piezoelectric materials have a much stronger ME coupling, relative to single-phase systems. Single phase ME materials show inherently weak coupling between the ferroic order parameters and limited scope for tailoring ME response, which limits their use in multifunctional devices. Therefore, by engineering the piezoelectric and magnetic materials/properties, ME coupling can be tailored. For a ME material to exhibit high magnetoelectric coupling coefficient (αME),
Applications Invited
COLLABORATORS
Evolution of Magnetoelectric Effect in Multiferroic Nanocomposite: A Ferroelectric-Ferrite Approach.
Applications Invited
COLLABORATORS
Scopus Publications
Scholar Citations
Scholar h-index
Scholar i10-index
Scopus Publications
Abhijeet Kumar, Siddhartha Swarup Parida, Poonam Kumari, Deeksha Chhibber, Himani, Radheshyam Rai, Angad Kumar Singh, and Budhendra Singh
Elsevier BV
Deeksha Chhiber, Poonam Kumari, Saroj Bala, Shilpa Kumari, and Radheshyam Rai
Springer Science and Business Media LLC
Anup Kumar, Vinod Kumar, Manish Kumar Verma, Vishnu Shankar Rai, Dinesh Prajapati, Biswajit Jena, Dipendra Kumar Verma, Poonam Kumari, D. Tiwary, and K. D. Mandal
Springer Science and Business Media LLC
Poonam Kumari, Disha, Manoj K. Nayak, Dhirendra Dhruwe, Manoj K. Patel, and Sunita Mishra
American Chemical Society (ACS)
Poonam Kumari, Disha, Raj Rani, Manoj K. Patel, Sunita Mishra, Sandeep Singhai, and Manoj K. Nayak
Royal Society of Chemistry (RSC)
Eco-friendly and reusable graphene-based magnetic anion exchange (NMGO) adsorption–desorption mechanisms and the most promising for the effective removal of anionic Congo red dyes from environmental samples.
Sushma Sharma, Sapna Thakur, Poonam Kumari, Sunita Chandel, and Mamta Shandilya
Informa UK Limited
Sushma Sharma, Nahla A. Bouqellah, Tanvir Kaur, Poonam Kumari, Sunita Chandel, Magda M. Mehanni, and Abd El-Latif Hesham
Springer Science and Business Media LLC
Poonam Kumari, Deeksha, Dipika Nanda, Shweta Thakur, Shilpa Kumari, Anupinder Singh, and Radheshyam Rai
Informa UK Limited
Abstract In this study, the structural analysis of the samples (1-x)(K0.44Na0.52Li0.04-Nb0.86Ta0.1Sb0.04)-x(BiAlO3) (x = 0, 0.005, 0.007, 0.01, and 0.05) showed that the samples have orthorhombic and tetragonal phases. The effect of increasing concentration of BA in (1-x)(K0.44Na0.52Li0.04-Nb0.86Ta0.1Sb0.04)-x(BiAlO3) samples have been studied on impedance and modulus analysis of the samples in 100 °C–500 °C temperature range. All the samples were found to exhibit NTCR behavior. AC conductivity showed that the conduction increase with increase in temperature. The dielectric and capacitive behavior of the samples were also analyzed from the dielectric and modulus study of the samples.
Poonam Kumari, Sapna Thakur, Geetika Guleria, Shweta Thakur, and Sushma Sharma
World Scientific Pub Co Pte Ltd
We investigated the impact of cobalt (Co) incorporation on the structural, optical, and magnetic properties of ferrite Ni[Formula: see text]CoxMn[Formula: see text]Fe[Formula: see text]O4, also known as NCMF for [Formula: see text], 0.02, and 0.04, which were successfully synthesized using a low-temperature sol-gel combustion process with nitrates as cations and citric acid (C6H8O7) as the combustion/chelating agent. In X-ray diffraction studies, cobalt incorporation resulted in a significant increase in lattice parameter from 8.31 to 8.36, as well as a significant increase in density from 5.42 to 5.52[Formula: see text]g/cm3; crystal size formation was observed in the range of 44.76[Formula: see text]nm to 48.54[Formula: see text]nm for all samples. Raman spectra analysis confirmed that single phase belongs to the Fd3m space group. Fourier transform infrared (FTIR) spectra were used to identify functional clusters and residual groups in all samples. UV–visible spectroscopy showed a redshift of 0.92[Formula: see text]eV for [Formula: see text]. The effect of dopants on nickel ferrites’ magnetization was observed in the range 52–59[Formula: see text]emu/g, indicating that all samples contain soft magnetic content. Antifungal activity of synthesized sample was analyzed against Aspergillus niger (MT675916) species of plant pathogenic fungi isolated from Capsicum during storage. Biological analysis designated that the sample for [Formula: see text] has shown a 100% potent antifungal activity against Aspergillus niger (MT675916) species. For [Formula: see text] treatment completely inhibits the growth of fungus after 7 days. Therefore, NCMF NPs can be used as applicant resources for industrial, medical, and biological applications.
Sushma Sharma, Poonam Kumari, Priyanka Thakur, Gaganpreet Singh Brar, Nahla A. Bouqellah, and Abd El-Latif Hesham
Springer Science and Business Media LLC
AbstractCurrent study signifies the use of nanoparticles as alternative in plant disease management to avoid harmful effect of pesticide and fungicide residue. Synthesis of nanoparticles (Ni0.5Al0.5Fe2O4) by hydrothermal method and studied their X-ray diffraction analysis (XRD), Raman spectra, and UV spectra and further successfully evaluated for antifungal activity against a soil and seed borne pathogenic fungus (Fusarium oxysporum).Among various pests, fungal pathogens are the main cause of crop destruction and we developed nanoparticles (Ni0.5Al0.5Fe2O4) which is successfully evaluated for antimycotic activity against dry rot (F. oxysporum) of ginger which causes 50–70% losses in the ginger plant. In vitro and in vivo analysis designated that the nanoparticles (Ni0.5Al0.5Fe2O4) has shown an excellent antifungal activity against F. oxysporum at 0.5 mg/ml concentration. Similarly, no disease incidence was recorded when Ni0.5Al0.5Fe2O4 nanoparticles used at 0.5 mg/ml concentration under in vivo conditions. In plants various environmental stresses (biotic and abiotic) leads to excessive production of reactive oxygen species (ROS) causing progressive oxidative damage and ultimately leads to cell death. The role of ROS in nanoparticles (Ni0.5Al0.5Fe2O4) represents by reduction in the growth inhibition of F. oxysporum. We speculated in light of these results that the cytotoxic effect of Ni0.5Al0.5Fe2O4 nanoparticles on F. oxysporum may be mediated through ROS. We can suggest the role of nanoparticles (Ni0.5Al0.5Fe2O4) gives a promising result as a fungicidal activity and could be a novel family of future new generation fungicide.
Priyanka Thakur, Sapna Thakur, Poonam Kumari, Mamta Shandilya, Sushma Sharma, Peter Poczai, Abdullah A. Alarfaj, and R. Z. Sayyed
Springer Science and Business Media LLC
Disha, Poonam Kumari, Manoj K. Patel, Parveen Kumar, and Manoj K. Nayak
MDPI AG
In this work, carbon dots (CDs) were synthesized by a one-step hydrothermal method using citric acid and ethylene diamine, and covalently functionalized with antibodies for the sensing of progesterone hormone. The structural and morphological analysis reveals that the synthesized CDs are of average size (diameter 8–10 nm) and the surface functionalities are confirmed by XPS, XRD and FT-IR. Further graphene oxide (GO) is used as a quencher due to the fluorescence resonance energy transfer (FRET) mechanism, whereas the presence of the analyte progesterone turns on the fluorescence because of displacement of GO from the surface of CDs effectively inhibiting FRET efficiency due to the increased distance between donor and acceptor moieties. The linear curve is obtained with different progesterone concentrations with 13.8 nM detection limits (R2 = 0.974). The proposed optical method demonstrated high selectivity performance in the presence of structurally resembling interfering compounds. The PL intensity increased linearly with the increased progesterone concentration range (10–900 nM) under the optimal experimental parameters. The developed level-free immunosensor has emerged as a potential platform for simplified progesterone analysis due to the high selectivity performance and good recovery in different samples of spiked water.
Geetika Guleria, Sapna Thakur, Dhananjay K Sharma, Shweta Thakur, Poonam Kumari, and Mamta Shandilya
IOP Publishing
Abstract In this work, the growth of enviro-friendly and biodegradable α-Fe2O3/C20H38O11 nanocomposite is reported by means of a real time application to prolong the storage life of Tomato (Solanum Lycopersicum). A low temperature technique is used to prepare the α-Fe2O3 nanoparticles to obtain a crystalline nanopowder. XRD confirms the phase formation and crystalline nature of α-Fe2O3 nanoparticles. The surface morphology and elemental analysis of α-Fe2O3/C20H38O11 nanocomposite is conducted by SEM and EDX. Nanocomposite exhibits excellent antimicrobial activity against Klebsiella pneumoniae and Staphylococcus aureus bacteria. Tomato fruit samples are coated with two different concentrations of α-Fe2O3/C20H38O11 nanocomposite with 5% UC1A, UC2A and 3% UC1B, UC2B; and uncoated samples UC1, UC2 are stored at room temperature (25 ± 2 °C) and refrigerator temperature (4 °C) respectively for ascorbic acid (vitamin C) analysis on days 0, 4, 8, 12 and 16. Our study revealed that a 3% concentration of α-Fe2O3/C20H38O11 nanocomposite material is quite potent in maintaining quality aspects of the tomato fruit with no decline in vitamin C under refrigerated conditions up to the 16th day. FTIR analysis of all samples was done to determine the functional groups present in tomato samples after storage. Atomic absorption spectrometer (AAS) was used to analyse the content of Fe in tomato samples.
Disha, Manoj K. Nayak, Poonam Kumari, Manoj K. Patel, and Parveen Kumar
Elsevier BV
Geetika Guleria, Shweta Thakur, Mamta Shandilya, Sahil Kumar, Poonam Kumari, Dhananjay K. Sharma, and Sapna Thakur
Elsevier BV
Akansha Deora, S. S. Sharma, Poonam Kumari, Vinita Dahima, Suresh Kumar, and M. Rohith
Springer Science and Business Media LLC
AbstractThe study is of great relevance with present day pandemic era where mushrooms have immunity enhancing properties and they convert agro-wastes into protein rich food. India is having a youth population of about 750 million and mushroom cultivation has good potential to contribute in national income as well as enhanced immunity. The key aspects undertaken during research were the spawn production, cultivation methodology, and the suitability of various factors affecting the production and yield attributes of Pleurotus eryngii under ambient conditions in subtropical areas. Study includes yield enhancing substrate, sterilization method, spawn and substrate quantity in the growing of King Oyster i.e. Pleurotus eryngii in subtropical zones. Paddy straw was found to be the best substrate giving the highest biological efficiency and producing maximum number of fruiting bodies which is otherwise burnt by farmers in India and it is a major cause of air pollution. Whereas, maize straw showed fastest spawn run and pin head emergence out of six tested substrates and supplements. But, due to the unavailability of paddy straw in this region, the other straws resulting in optimum yields are to be recommended. Chemical steeping of substrate with chlorine water at 0.4% + carbendazim at 2% + dichlorovos at 0.1% of water used for soaking showed best results in terms of biological efficiency whereas, water and aerated steam treatment of substrate at 85 °C-90°C for about 60–90 min supported the results in leaching of nutrients and thus, biological efficiency gets lower. Out of four spawn rates used, spawn rate of 5% was found significantly best resulting in maximum biological efficiency, fastest mycelial run, primordial initiation and highest average fruit body weight. All the experiments were found statistically significant except the experiment that was performed for evaluating the optimum quantity of substrate for bag preparation. There was not much difference in the obtained yields with respect to increase in the amounts of substrate. So, growing this mushroom from the obtained best results will result in better production with higher income even for the marginal farmers in subtropical zones of world.
Disha, Poonam Kumari, Manoj K. Nayak, and Parveen Kumar
Royal Society of Chemistry (RSC)
A facile and label-free electrochemical approach based on magnetic graphene oxide nanomaterials with a large surface to volume ratio and less susceptible to aggregation proved promising in developing highly sensitive and selective sensing of progesterone.
Disha, Poonam Kumari, Manoj K. Nayak, and Parveen Kumar
Elsevier BV
Shilpa Kumari, Radheshyam Rai, Pawan Kumar, Poonam Kumari, and Alexey Dronov
Informa UK Limited
Abstract In this article, we report the results of the Rietveld and impedance analysis of Eu doped La1–xEuxMnO3 (LEMO; x = 0.10, 0.30, and 0.50) perovskite manganites synthesized by solid-state reaction method. Structural studies through Rietveld analysis confirm that a mixed-phase nature of all LEM samples having a hexagonal unit cell structure with a less detectable impurity (Eu2O3) ceramics. The patterns are zanalyzed in detail with structural distortion and strain in LEM manganites ceramics. Dielectric constant and modulus are found to increase with increasing Eu concentration. The samples LEM-0.10 shows the negative capacitance at low frequency and temperature, respectively.
Satvinder Singh, Poonam Kumari, S.K. Tripathi, Gurinder Singh, and Aman Kaura
Elsevier BV
Poonam Kumari, Madan Lal, Sunil Kumar, Radheshyam Rai, Anupinder Singh, D. V. Karpinsky, and Igor Bdikin
World Scientific Pub Co Pte Lt
In this research paper, we utilized the traditional high-temperature solid-state reaction method to fabricate the K[Formula: see text]Na[Formula: see text]NbO3, K[Formula: see text]Na[Formula: see text]NbO3 and K[Formula: see text]Na[Formula: see text]NbO3 (abbreviated as KNN-1, KNN-2, and KNN-3, respectively) lead-free ion deficient ceramics for understanding the influence of ionic deficiency on the crystalline structure and dielectric/piezoelectric properties of the samples. X-ray diffraction patterns of these samples exhibited a perovskite tetragonal phase. Dielectric anomalies around 287∘C and 471∘C were identified as ferroelectric to ferroelectric and ferroelectric to paraelectric-transition temperatures for KNN-2 at 1[Formula: see text]kHz. It was found that the composition KNN-2 exhibit relatively high Curie temperature i.e., 471∘C. The conductivity plots confirm that the activation energies are frequency-dependent. The impedance behavior in our ceramic samples can be analyzed with the bulk/grain effect. The slope of [Formula: see text] with temperature shows negative temperature coefficient of resistance (NTCR) type behavior in proposed KNN ceramics material.
Arpana Singh, Kashif Shamim, Seema Sharma, Radheshyam Rai, and Poonam Kumari
Springer Science and Business Media LLC
Poonam Kumari, Radheshyam Rai, Seema Sharma, and M. A. Valente
World Scientific Pub Co Pte Lt
This work focuses on the structural, electrical and magnetic properties of Bi[Formula: see text]Tb[Formula: see text]Ba[Formula: see text]Fe[Formula: see text]Ti[Formula: see text]O3 ceramics, fabricated by solid state reaction procedure. XRD forms of the samples at RT exhibited perovskite phase through the hexagonal structure at room temperature. Dielectric studies of the materials with frequency at different temperatures (25–400[Formula: see text]C) exhibit two dielectric anomalies, first at 175[Formula: see text]C (ferroelectric–ferroelectric transition) and second at around 320[Formula: see text]C (ferroelectric–paraelectric transition). The Curie temperature moved towards the low side temperature with the increase in frequency. The less value of activation energy got for these samples could be attributed to the influence of electronic contribution to the conductivity. A significant change in the magnetic studies was observed for Bi[Formula: see text]Tb[Formula: see text]Ba[Formula: see text]Fe[Formula: see text]Ti[Formula: see text]O3 ceramic. The impedance analysis confirms the non-Debye type nature of the ceramic and relaxation frequency moved to a higher temperature. The Nyquist plot and conductivity studies showed the NTCR behavior of samples. The highest magnetization field was found at temperature [Formula: see text]268.15[Formula: see text]C.