Please give a lot of attention and participation from the members of the Mechanical Engineering department.

▣ Title: Thermal engineering using infrared photonic structures: probing coherent thermal emission in a single nano-object

▣ Speaker: 신선미 교수

▣ Affiliation: National University of Singapore

▣ Date: 2022. 11. 11.(Fri) 11:00

▣ Venue: 제4공학관 D403호 

▣ Host: 김우철 교수

▣ Abstract

Control of thermal transport is of significant interest for a wide range of applications, such as thermoregulation of individuals, buildings, vehicles and batteries, thermo-electric and solar-thermal energy conversion, bio/chemical sensing, and micro/nanomanufacturing. However, heat transfer processes are often difficult to actively control: heat conduction is usually diffusive in nature owing to the incoherence of heat carriers (phonons and electrons) and thermal radiation is generally broadband or have wide energy distribution. If one could engineer the transport of thermal energy, arguably the most ubiquitous form of energy, with similar degree of controllability as optical energy, a variety of energy transport and conversion technologies can be improved. In this talk, I will introduce a thermo-photonic engineering approach to manipulate nanoscale heat transport by using surface phonon polaritons (SPhP). I will mainly focus on how the SPhP can be utilized to tailor thermal radiation properties, especially to achieve a coherent, near-monochromatic far-field thermal emission, which is a big departure from the incandescent behaviour in the classic textbook as described by the Planck’s law.