Semiconductors and Microelectronics Technology Seminar - Pavan Nukala, Thursday, April 3rd at 1:30pm in EEB 248

Speaker: Pavan Nukala, Centre for Nano Science and Engineering, Indian Institute of Science, Bengaluru, India.

Talk Title: Visualizing long-range solid state amorphization in ferroic In2Se3

Series: Semiconductors & Microelectronics Technology

Abstract: I will discuss our recent and exciting results on in-situ transmission electron microscopy studies on T-phase, polar In2Se3 nanowires.  Through some beautiful atomic resolution images, I'll show that the vdW layers slide with application of current (carrier wind force), eventually leading to a complete solid-state amorphization of these nanowires. I'll show in-situ videos of jerky earth quake-like response of these devices occurring due to the interaction between these defects, which eventually forms a precursor to amorphization. These insights, while on one hand may be considered to be text-book models of solid-state amorphization, have also implications in In2Se3 FES-FETs. I will briefly discuss our most recent foray into the transistors and show how the in-situ TEM studies are relevant for these devices. References:1 G. Modi*, S. Parathe*, et al., Electrically driven long-range solid state amorphization in ferroic In2Se3, Nature, 635, 847, 2024

Biography: Pavan Nukala obtained his Bachelors and Masters in Metallurgical and Materials Engineering from the Indian Institute of Science, Madras, India. He pursued his PhD from University of Pennsylvania, and subsequently was a nanosaclay post-doc at University Paris Saclay and Marie-Curie fellow at the University of Groningen. He started his independent group at the Indian Institute of Science in Bengaluru, India in 2020. His group works on ferroelectric, piezoelectric and phase change materials, oxide and 2D memristors, with an expertise on in-situ electron microscopy.

Host: Joshua Yang, Chongwu Zhou, Steve Cronin and Wei Wu

More Information: Pavan Nukala_2024-04-03.pdf

Location: Hughes Aircraft Electrical Engineering Center (EEB) - 248

Audiences: Everyone Is Invited

Contact: Marilyn Poplawski

This event is open to all eligible individuals. USC Viterbi operates all of its activities consistent with the University's Notice of Non-Discrimination. Eligibility is not determined based on race, sex, ethnicity, sexual orientation, or any other prohibited factor.

Add to Google Calendar