Assistant Professor

Dr. Mallikarjuna Rao Motapothula

Department of Physics

Interests

  1. Real time Mass Spectroscopy and its applications
  2. Ion beam analysis and modification
  3. Functional oxide thin films.

Education

2006

Acharya Nagarjuna University
India
Bachelors

2008

University of Hyderabad
India
Masters

2013

National University of Singapore
Singapore
Ph.D.

Experience

  • 2013-17, Research Fellow | Nanoscience & Nanotechnology Institute (NUSNNI), Singapore
  • 2017-18, Researcher | Tandem National Laboratory, Uppsala University, Sweden
  • 2018-19, DST-Inspire Faculty | School of Physics, University of Hyderabad, India

Research Interest

Soft ionization mass spectroscopy:
  • Real time quantification of ppt level gaseous molecules in ambient air for Catalysis, Energydevices, Environment and Health applications.
Ion Channeling in single crystals:
  • Channelling contrast microscopy.
  • Focused ion beam channeling applications.
Ion beam analysis and its applications
  • In-situ inter-diffusion, corrosion studies of solid/liquid/gaseous active interfaces.
  • Sub-nm depth resolution backscattering spectrometry using keV ion beams.
  • Medium energy ion induced desorption and photon emission.
  • Elemental imaging of biological cells.
Fabrication of surface and sub-surface nanostructures
  • Sub-5nm resolution nanostructures by direct writing of low energy ion beams.
  • Sub-surface nanostructures by proton beam writing.
  • Band engineering of organic perovskite single crystals for LED and solar cell applications.
Functional epitaxial thin films
  • Defect induced magnetic, electronic and optical properties.
  • Rapid screening of best alloy compositions using combinatorial libraries.

Awards & Fellowships

  • 2018 - 23, DST-Inspire Faculty Award,  Department of Science and Technology (DST) Research grant of 35 lakhs

Memberships

  • Society of Tribologists and Lubrication Engineers
  • European Lubrication Grease institute

Publications

  • A study of small impact parameter ion channeling effects in thin crystals, Motapothula, M. B. H. Breese, Eur. Phy. Journal. B, 91, 3, 49 (2018).
  • Experimental evidence of the superfocusing effect for axially channeled MeV protons, Motapothula, S. Petrović, N. Nešković, M. B. H. Breese, Physical Review B 94, 075415 (2016).
  • Origin of ringlike angular distributions observed in rainbow channeling in ultrathin crystals, Motapothula, S. Petrovic, N. Neskovic, Z. Y. Dang, M. B. H. Breese, M. A. Rana, and A. Osman, Physical Review B, 86, 205426, (2012).
  • Influence of the Narrow {111} Planes on Axial and Planar Ion Channeling, Motapothula, Z.Y. Dang, T. Venkatesan, M. B. H. Breese, M. A. Rana, and A. Osman, Physical Review Letters 108, 195502 (2012).

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