Chemistry Seminar Series: Simone Pisana

Wednesday, January 29, 2020 2:30 pm - 2:30 pm EST

Nanoscale heat transport at plasmonic interfaces and in 2D crystals

Simone Pisana
Associate Professor
Department of Electrical Engineering & Computer Science
Lassonde School of Engineering
York University

Wednesday, January 29, 2019
2:30 p.m.
C2-361 (Reading Room)


Heat transport critically affects device performance and reliability. At the nanoscale, analysis of heat transport is complicated by finite size effects, interactions between different energy carriers and onset of ballistic phenomena. In this talk I will overview two examples of nanoscale heat transport problems that have been recently studied in our group. First, I will discuss energy transfer mechanisms at metal/dielectric interfaces that are critical in applications such as plasmonic devices. I will show how the use of ~2nm metallic layers can dramatically alter interface heat transport and outline the major factors that control it, including electron-phonon coupling and vibrational properties of the materials involved. Then, I will focus on heat transport in 2D crystals of interest for novel device applications. I will outline how the highly anisotropic transport can be measured and dramatic nanoscale transport perturbations that take place in graphene, hBN and MoS2 aggregates or WS2 single crystals.