A nanoscale photonic thermal transistor for sub-second heat flow switching.

ABSTRACT: Control of heat flow is critical for thermal logic devices and thermal management and has been explored theoretically. However, experimental progress on active control of heat flow has been limited. Here, we describe a nanoscale radiative thermal transistor that comprises of a hot source and a cold drain (both are ~250 nm-thick silicon nitride membranes), which are analogous to the source and drain electrodes of a transistor. The source and drain are in close proximity to a vanadium oxide (VO_x)-based planar gate electrode, whose dielectric properties can be adjusted by changing its temperature. We demonstrate that when the gate is located close ( < ~1 µm) to the source-drain device and undergoes a metal-insulator transition, the radiative heat transfer between the source and dra

SUBMITTER: Lim JW 

PROVIDER: S-EPMC11222488 | biostudies-literature | 2024 Jul

REPOSITORIES: biostudies-literature