HELLO! I'M Loukya.
Loukya Boddapati joined INL as a Marie Curie COFUND Research Fellow. She is working in the Nanostructured Materials research group at the Department of Advanced Electron Microscopy Imaging and Spectroscopy. Her research is focussed on exploring the atomic-scale imaging and spectroscopy techniques in a transmission electron microscope for studying atomically thin layered transition metal chalcogenides which have several potential applications.
Loukya Boddapati is a Research Fellow at INL joined through NanoTRAINForGrowth II COFUND programme. She obtained PhD in 2016 for the studies on magnetic thin films from the International Centre for Materials Science (ICMS), Jawaharlal Nehru Centre for Advanced Scientific Research, India. Loukya completed her Master of Physics specialized in Materials Science from University College of Science, Osmania University in Hyderabad, Telangana. During her PhD (funded by Department of Science and Technology, India), she had the valuable opportunity to access aberration-corrected transmission electron microscope facility at ICMS. This helped her immensely in understanding the potentiality of the instrument in atomic-scale materials characterization.
Loukya worked on advanced TEM based techniques like electron magnetic circular dichroism for probing nanoscale magnetism and used aberration corrected high-resolution imaging and spectroscopy methods extensively for understanding structural, compositional and spectroscopic properties of thin films and nanostructures. Her research has resulted in 24 publications in peer-reviewed international journals including Physical Review B, Applied Physics Letters, Journal of Applied Physics, Advanced Materials, and ACS Applied Materials & Interfaces. She worked as Research Associate at JNCASR before joining INL in the year 2018.
The Cofund project
ADVANCED ELECTRON MICROSCOPY IMAGING AND SPECTROSCOPY OF ATOMICALLY THIN LAYERED TRANSITION METAL CHALCOGENIDES
In the past decade, TEM has become one of the most successful and powerful analytical tools in materials science with the introduction of Electron Energy-Loss Spectroscopy (EELS) which is a characteristic of the excited atom and is capable of revealing information on the density of states, interband and intraband transitions etc. at the atomic-scale. Beyond the structural and compositional analysis, probing magnetic information by TEM is a recent and innovative development. It was shown that magnetic circular dichroism can be obtained in TEM by choosing particular experimental conditions to select inelastically scattered electrons. Therefore, the current research programs aims to utilize the state-of-the-art capabilities of TEM in imaging and spectroscopy studies of advanced materials with potential applications.
Characterization of nanomaterials is always a challenge in understanding the origin of the exotic properties exhibited by them. The objective of the COFUND project is fundamentally to understand the origin of structural, optical and magnetic properties of one- and two-dimensional transition metal chalcogenides with several potential technological applications. The Double-Corrected FEI Titan G3 Cubed Themis 60-300 equipped with gun monochromator at INL, offers higher spatial and energy resolutions that pushes the information limits down to atomic scale. In combination with electron energy-loss spectroscopy at 60 keV it proves to be the ultimate tool for studying these nanomaterials that are sensitive to beam damage. Understanding the phenomenon such as local structural and phase transformations, optical bandgaps and inter-band transitions, charge transfer phenomenon as well as magnetism are aimed in this project.
Overall, in this proposed research program, the intention is to dedicate the combined experimental and simulation efforts for the advancement in understanding the atomically thin layered materials especially related to nanoscale band-gaps and magnetism which have remained relatively unexplored. There is an enormous research opportunity in this area and this will highly impact the practical applications of these materials.