VIRTUAL

 Thursday,  July 21st  2022

3:45 – 4:45 pm (MT)

WEBEX 

 Speaker: Roman Anufriev

Project Associate Professor 

University of Tokyo

“Ballistic heat conduction at nanoscale: demonstrations and applications”

 

Abstract: 

In this colloquium, I will discuss the fascinating thermal phenomenon called ballistic heat conduction, which constitutes the conduction of heat over microscale distances without dissipation of thermal energy. We will learn how such ballistic conduction can occur in crystalline nanostructures and what causes it at the phonon transport level. I will summarize the past decade of experimental attempts to demonstrate this effect in semiconductor nanostructures and recent advances in understanding this phenomenon. I will also introduce possible applications of this phenomenon and recently proposed concepts of heat manipulation based on ballistic heat transport. This colloquium will be helpful for researchers and engineers interested in thermal and phonon transport at micro and nanoscale.



Bio: 

Roman Anufriev graduated from Nanotechnology faculty of Academic University of the Russian Academy of Science in 2010. Then, He moved to INSA-Lyon, France, where in 2013 he defended his PhD on the optics of semiconductor nanowires. Next, he moved to Japan, where he worked at the University of Tokyo on phononic crystals. Currently, he is a project associate professor at the University of Tokyo. His research is focused on phonon and heat transport in nanostructures. Specifically, he studies ballistic thermal transport in nanowires, coherent heat conduction in phononic nanostructures, and heat conduction engineering for thermoelectrics.