Back close

Dr. Umamaheswari A.

Associate Professor, Department of Physics, School of Physical Sciences, Coimbatore

Qualification: MPhil, MSc, Ph.D
a_umamaheswari@cb.amrita.edu
Uma Maheswari's Google Scholar Profile
Scopus Author ID
Research Interest: Perovskites/metal oxides for energy harvesting and environmental-related applications; and High-temperature wear and corrosion-resistant nanocomposite coatings

Bio

Dr. A. Uma Maheswari currently serves as Associate Professor at the Department of Physics, School of Physical Sciences, Coimbatore.

Publications

Journal Article

Year : 2023

Enhanced responsivity of Zr-doped BiFeO3 based self-powered UV-visible heterojunction photodetector fabricated via spray pyrolysis technique

Cite this Research Publication : A. Kathirvel, A. Uma Maheswari, and Sivakumar, M., 2023. Enhanced responsivity of Zr-doped BiFeO3 based self-powered UV-visible heterojunction photodetector fabricated via spray pyrolysis technique. Applied Surface Science, p.156640, 2023

Publisher : Applied Surface Science

Year : 2022

Highly sensitive and wavelength-tunable solution-processed BiFeO3 heterojunction based fast-response self-powered white-light photodetector

Cite this Research Publication : Kathirvel, A., Maheswari, A.U. and Sivakumar, M., 2022. Highly sensitive and wavelength-tunable solution-processed BiFeO3 heterojunction based fast-response self-powered white-light photodetector. Thin Solid Films, 761, p.139534, 2022

Publisher : Thin Solid Films

Year : 2022

Enhanced magnetic, dielectric and photoconductive properties of Zr doped BiFeO3 nanostructures

Cite this Research Publication : Kathirvel, A., Krishna, K.I., Ganga, R., Maheswari, A.U. and Sivakumar, M., 2022. Enhanced magnetic, dielectric and photoconductive properties of Zr doped BiFeO3 nanostructures. Physica E: Low-dimensional Systems and Nanostructures, 142, p.115306, 2022

Publisher : Physica E: Low-dimensional Systems and Nanostructures

Year : 2021

Titanium doped V2O5 nanostructures by chemical synthesis for photocatalytic performance enhancement

Cite this Research Publication : Neelima, M., Vandana, S., Kathirvel, A., Sivakumar, M. and Maheswari, A.U., 2021. Titanium doped V2O5 nanostructures by chemical synthesis for photocatalytic performance enhancement. Optik, p.168516, 2021

Publisher : Optik

Year : 2021

Influence of annealing atmosphere for controlling oxygen vacancies of PVP-capped TiO 2 nanoparticles

Cite this Research Publication : Srilakshmi, P., Sivakumar, M., Kathirvel, A. and Maheswari, A.U., 2021. Influence of annealing atmosphere for controlling oxygen vacancies of PVP-capped TiO 2 nanoparticles. Journal of Nanoparticle Research, 23, pp.1-14, 2021

Publisher : Journal of Nanoparticle Research

Year : 2021

BiFeO3-Thiourea/Carbon heterostructure based self-powered white light photodetector

Cite this Research Publication : Sudip Kumar Batabyal, A, U. Maheswari, Kathirvel, A., and M., S., “BiFeO3-Thiourea/Carbon heterostructure based self-powered white light photodetector”, Materials Letters, vol. Volume 284, Part 1, 2021.

Year : 2020

Influence of B-site doping on structural, optical and dielectric properties of bismuth ferrite

Cite this Research Publication : R. Anjitha, Kathirvel, A., Dr. Umamaheswari A., and Sivakumar, M., “Influence of B-site doping on structural, optical and dielectric properties of bismuth ferrite”, Materials Today: Proceedings, vol. 33, pp. 1293-1297, 2020.

Publisher : Materials Today: Proceedings

Year : 2020

Size Dependent Dielectric Properties of TiO2 Nanoparticles

Cite this Research Publication : K. K. Anjali, Dr. Umamaheswari A., and Sivakumar, M., “Size Dependent Dielectric Properties of TiO2 Nanoparticles”, Material and Manufacturing Technology X, 2020.

Publisher : Material and Manufacturing Technology X, Trans Tech Publications Ltd

Year : 2019

Tuning the optical bandgap of V2O5 nanoparticles by doping transition metal ions

Cite this Research Publication : P. Srilakshmi, Dr. Umamaheswari A., Sajeev, V., and Sivakumar, M., “Tuning the optical bandgap of V2O5 nanoparticles by doping transition metal ions”, Materials Today: Proceedings, vol. 18, pp. 1375-1379, 2019.

Publisher : Materials Today: Proceedings

Year : 2019

Influence of Annealing Temperature on the Optical Properties of TiO2Thin Films

Cite this Research Publication : K. N. Akhil, Dr. Umamaheswari A., and Sivakumar, M., “Influence of Annealing Temperature on the Optical Properties of TiO2Thin Films”, Materials Today: Proceedings, vol. 18, pp. 1416-1421, 2019.

Publisher : Materials Today: Proceedings

Year : 2019

Frequency dependent dielectric relaxation of Ba-doped BiFeO3 nanoparticles

Cite this Research Publication : S. Suresh, Kathirvel, A., Dr. Umamaheswari A., and Sivakumar, M., “Frequency dependent dielectric relaxation of Ba-doped BiFeO3 nanoparticles”, Materials Research Express, vol. 6, p. 115057, 2019.

Publisher : Materials Research Express, IOP Publishing

Year : 2019

Structure dependent dielectric response of spray coated nanostructured zirconia thin films

Cite this Research Publication : Sreedevi R Mohan, Uma Maheswari A., and M. Sivakumar, "Structure dependent dielectric response of spray coated nanostructured zirconia thin films," Material Research Express, Vol. 6, (2019), No.6.065038. DOI 10.1088/2053-1591/ab0a4c

Publisher : IOP Publishing Ltd.

Year : 2019

Optical absorption enhancement of PVP capped TiO 2 nanostructures in the visible region

Cite this Research Publication : Dr. Umamaheswari A., Anjali, K. K., and Sivakumar, M., “Optical absorption enhancement of PVP capped TiO 2 nanostructures in the visible region”, Solid State Ionics, vol. 337, pp. 33-41, 2019.

Publisher : Solid State Ionics

Year : 2018

Effect of Sintering Temperature on Dielectric Properties of Hydrous Amorphous Zirconia

Cite this Research Publication : Sreedevi R. Mohan, A. Uma Maheswari, M. Sivakumar, "Effect of sintering temperature on dielectric properties of hydrous amorphous zirconia," Materials Today Proceedings, Volume 5, Issue 8, Part 3, 2018, Pages 16598-16609.

Year : 2018

Optical and Corrosion Studies of Spray Pyrolysis Coated Titanium Dioxide Thin Films

Cite this Research Publication : M. V. P, Rani, A., Kumar, V. Senthil, Dr. Umamaheswari A., Manickam, S., and Kumar, S., “Optical and Corrosion Studies of Spray Pyrolysis Coated Titanium Dioxide Thin Films”, Advanced Science Letters, vol. 24, pp. 5836-5842, 2018.

Publisher : Advanced Science Letters

Year : 2017

Structural transformation of polymeric and cationic capped zirconia nanoparticles with temperature

Cite this Research Publication : Sreedevi R. Mohan, A. Uma Maheswari, M. Sivakumar, "Structural Transformation of Polymeric and Cationic Capped Zirconia Nanoparticles with Temperature," International Journal of Nanoparticles (IJNP), Volume 9, 2017, Pages 88-100.

Publisher : International Journal of Nanoparticles

Year : 2017

Investigation of anticorrosion properties of nanocomposites of spray coated zinc oxide and titanium dioxide thin films on stainless steel (304L SS) in saline environment

Cite this Research Publication : M. V. P, S, S. Kumar, Kumar, V. Senthil, Dr. Umamaheswari A., Dr. Sivakumar M., and Rani, A., “Investigation of anticorrosion properties of nanocomposites of spray coated zinc oxide and titanium dioxide thin films on stainless steel (304L SS) in saline environment”, Materials Research Express, vol. 5, 2017.

Publisher : Materials Research Express

Year : 2017

Effect of Surfactant and Mineralizer on the Dielectric Properties of Zirconia Nanocrsytals

Cite this Research Publication : Uma Maheswari, Sreedevi R. Mohan, M. Sivakumar, "Effect of Surfactant and Mineralizer on the Dielectric Properties of Zirconia Nanocrystals," Applied Surface Science, Volume 427, Part A, 1 January 2018, Pages 1174-1182. DOI: https://doi.org/10.1016/j.apsusc.2017.08.147

Year : 2016

A Simple Chemical Precipitation Method of Titanium Dioxide Nanoparticles Using Polyvinyl Pyrrolidone as a Capping Agent and Their Characterization

Cite this Research Publication : World Academy of Science, Engineering and Technology, International Journal of Chemical, Molecular, Nuclear, Materials and Metallurgical Engineering, vol. 10, pp. 552–555, 2016.

Publisher : World Academy of Science, Engineering and Technology, International Journal of Chemical, Molecular, Nuclear, Materials and Metallurgical Engineering.

Year : 2016

Corrosion Resistance of 304L SS Spray Coated with Zirconia Nanoparticles

Cite this Research Publication : Dr. Umamaheswari A., Sivakumar, M., Indhumathi, N., and Mohan, S. R., “Corrosion Resistance of 304L SS Spray Coated with Zirconia Nanoparticles”, IOP Conference Series: Materials Science and Engineering, vol. 149, p. 012068, 2016.

Publisher : IOP Conference Series: Materials Science and Engineering.

Year : 2015

Tweaking Electrical and Dielectric Properties of Nickel Oxide Nanocrystals by Varying the Surfactant

Cite this Research Publication : Uma Maheswari, Sreedevi R. Mohan, M. Sivakumar, S. Saravana Kumar. Tweaking Electrical and Dielectric Properties of Nickel Oxide Nanocrystals by Varying the Surfactant. Journal of Nanoscience and Nanotechnology. Volume 15, 2015, Pages 9423–9430.

Year : 2014

Phase tuning of zirconia nanocrystals by varying the surfactant and alkaline mineralizer

Cite this Research Publication : Uma Maheswari, Sreedevi R Mohan, S. Saravana Kumar, M. Sivakumar, "Phase Tuning of Zirconia Nanocrystals by Varying the surfactant and Alkaline Mineralizer," Ceramics International, Volume 40, Issue 5, June 2014, Pages 6561–6568.

Publisher : Ceramics International

Year : 2013

Influence of alkaline mineralizer type on the characteristics of ZrO2 Nanoparticles

Cite this Research Publication : Uma Maheswari, A., S. Saravana Kumar, M. Sivakumar, Influence of alkaline mineralizer type on the characteristics of ZrO2 Nanoparticles, Journal of Nanoscience and Nanotechnology, 13(6), 4409-4414, 2013, http://dx.doi.org/10.1166/jnn.2013.7150, IF: 1.354.

Publisher : Journal of Nanoscience and Nanotechnology

Year : 2013

Influence of Alkaline Mineralizer on Structural and Optical Properties of ZrO2 Nanoparticles

Cite this Research Publication : Dr. Umamaheswari A., S Kumar, S., and Dr. Sivakumar M., “Influence of Alkaline Mineralizer on Structural and Optical Properties of ZrO2 Nanoparticles”, Journal of nanoscience and nanotechnology, vol. 13, pp. 4409-14, 2013.

Publisher : Journal of nanoscience and nanotechnology

Year : 2012

Study on vacancy related defects of CdS nanoparticles by heat treatment

Cite this Research Publication : N. S. Roshima, Kumar, S. S., A.U, D. Umamaheswa, and Dr. Sivakumar M., “Study on vacancy related defects of CdS nanoparticles by heat treatment”, Journal of Nano Research, vol. 18-19, pp. 53-61, 2012.

Publisher : Journal of Nano Research

Year : 2011

Study of resonances and absorption in one dimensional quantal scattering

Cite this Research Publication : Dr. Umamaheswari A., “Study of resonances and absorption in one dimensional quantal scattering”, 2011.

Year : 2010

Resonant states and transmission coefficient oscillations for potential wells and barriers

Cite this Research Publication : Dr. Umamaheswari A., Prema, P., and Shastry, C. S., “Resonant states and transmission coefficient oscillations for potential wells and barriers”, American Journal of Physics, vol. 78, pp. 412–417, 2010.

Publisher : American Journal of Physics, AAPT,

Year : 2009

Quasi-bound states, resonance tunnelling, and tunnelling times generated by twin symmetric barriers

Cite this Research Publication : Dr. Umamaheswari A., Prema, P., Dr. Mahadevan S., and Shastry, C. S., “Quasi-bound states, resonance tunnelling, and tunnelling times generated by twin symmetric barriers”, Pramana, vol. 73, p. 969, 2009.

Publisher : Pramana

Year : 2007

Transmission and scattering by an absorptive potential

Cite this Research Publication : Dr. Umamaheswari A., Dr. Mahadevan S., Prema, Pa, Shastry, C. Sa, and Agarwalla, S. Kb, “Transmission and scattering by an absorptive potential”, American Journal of Physics, vol. 75, pp. 245-253, 2007.

Publisher : American Journal of Physics

Year : 2006

Quantum mechanical transmission with absorption

Cite this Research Publication : Dr. Mahadevan S., Dr. Umamaheswari A., Prema, P., Shastry, C. S., and , “Quantum mechanical transmission with absorption”, Phys. Educ, vol. 23, pp. 13–21, 2006.

Publisher : Phys. Educ

Conference Paper

Year : 2018

Characterization and anticorrosion studies of spray coated nickel oxide (NiO) thin films

Cite this Research Publication : M. V. P, Kumar, V. Senthil, Dr. Umamaheswari A., Dr. Sivakumar M., S Kumar, S., and Rani, A., “Characterization and anticorrosion studies of spray coated nickel oxide (NiO) thin films”, Materials Today: Proceedings, vol. 5, no. 2. pp. 8577-8586, 2018.

Publisher : Materials Today: Proceedings

Year : 2008

Study of Quasi Bound States and Resonant Tunneling in twin symmetric barriers

Cite this Research Publication : Umamaheswari A, P.Prema, S.Mahadevan,’ Study of Quasi Bound States and Resonant Tunneling in twin symmetric barriers’, DAE Solid state Physics Symposium, December 2008

Publisher : DAE Solid state Physics Symposium

Conference Proceedings

Year : 2020

Size Dependent Dielectric Properties of TiO2 Nanoparticles

Cite this Research Publication : K. K. Anjali, Dr. Umamaheswari A., and Sivakumar, M., “Size Dependent Dielectric Properties of TiO2 Nanoparticles”, Material and Manufacturing Technology X, 2020.

Publisher : Material and Manufacturing Technology X, Trans Tech Publications Ltd

Year : 2019

Tuning the optical bandgap of V2O5 nanoparticles by doping transition metal ions

Cite this Research Publication : P. Srilakshmi, Dr. Umamaheswari A., Sajeev, V., and Sivakumar, M., “Tuning the optical bandgap of V2O5 nanoparticles by doping transition metal ions”, Materials Today: Proceedings, vol. 18, pp. 1375-1379, 2019.

Publisher : Materials Today: Proceedings

Year : 2018

Comparison of Anticorrosion Studies of Titanium Dioxide andNickel Oxide Thin Films Fabricated by Spray Coating Technique

Cite this Research Publication : V. P. Muhamed Shajudheen, K. Rani, A., V. Senthil Kumar, Dr. Umamaheswari A., Sivakumar, M., and S. Kumar, S., “Comparison of Anticorrosion Studies of Titanium Dioxide andNickel Oxide Thin Films Fabricated by Spray Coating Technique”, Materials Today: Proceedings, vol. 5. pp. 8889-8898, 2018.

Publisher : Materials Today: Proceedings,

Year : 2017

Influence of annealing temperature on theoptical properties of TiO2 thin films

Cite this Research Publication : Uma Maheswari, A., Akhil, K. N. and M. Sivakumar, Influence of annealing temperature on theoptical properties of TiO2 thin films, ICN:3I-2017, Materials Today: Proceedings. Submitted

Publisher : Materials Today: Proceedings

Year : 2016

Corrosion resistance of 304L SS spray coated with zirconia nanoparticles

Cite this Research Publication : A. Uma Maheswari, M. Sivakumar, N. Indhumathi, Sreedevi R Mohan, “Corrosion resistance of 304L SS spray coated with zirconia nanoparticles," ICon AMMA-2016, Amrita Vishwa Vidyapeetham, Bangalore, 2016.

Year : 2013

Effect of strong base on the crystalline phase of zirconia nanoparticles synthesized by arrested chemical precipitation method

Cite this Research Publication : Uma Maheswari, S. Saravana Kumar, Sreedevi R Mohan and M. Sivakumar, "Effect of strong base on the crystalline phase of zirconia nanoparticles synthesized by arrested chemical precipitation method," National Conference on Recent Advances in Surface Science (RASS 2013), 14th & 15th February 2013, Gandhigram Rural Institute - Deemed University, Gandhigram - 624 302, Dindigul, Tamil Nadu.

Publisher : National Conference on Recent Advances in Surface Science(RASS 2013)

Academic Qualifications
Degree University
PhD Physics Amrita Vishwa Vidyapeetham, Coimbatore, TamilNadu, India
MPhil Physics PSG College of Arts and Science, Coimbatore, TamilNadu, India
MSc Physics PSG College of Arts and Science, Coimbatore, TamilNadu, India
BSc Physics Avinasilingam Deemed University, Coimbatore, TamilNadu, India
Research

Funded Projects

Year Sponsor Title of the project Grant sanctioned Investigators Status
March 2017- August 2020 SERB Nanostructured iron-based mixed metal oxide photovoltaic thin films 31.05 Lakhs A. Uma Maheswari, M.Sivakumar, Sudip Kumar Batabyal Completed
July 2012 – July 2015 DRDO Nanostructured Thin Films of Composites Synthesized by Spray Coating Technique for Corrosion and Wear Resistance Applications 27.14 Lakhs M. Sivakumar, A.UmaMaheswari S.Saravanakumar Completed
Teaching

UG Theory

  • Modern Physics
  • Solid state physics
  • Concepts of Nanoscience and nanotechnology
  • Mechanics
  • Electricity and Magnetism
  • Engineering physics
  • Electrical Engineering Materials
  • Quantum Physics and its applications
  • Laser physics and its applications

PG Theory

  • Quantum Mechanics and Statistical Mechanics
Admissions Apply Now