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

Ju Won Lim, Ayan Majumder, Rohith Mittapally, Audrey-Rose Gutierrez, Yuxuan Luan, Edgar Meyhofer () and Pramod Reddy ()
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Ju Won Lim: University of Michigan
Ayan Majumder: University of Michigan
Rohith Mittapally: University of Michigan
Audrey-Rose Gutierrez: University of Michigan
Yuxuan Luan: University of Michigan
Edgar Meyhofer: University of Michigan
Pramod Reddy: University of Michigan

Nature Communications, 2024, vol. 15, issue 1, 1-9

Abstract: 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 (VOx)-based planar gate electrode, whose dielectric properties can be adjusted by changing its temperature. We demonstrate that when the gate is located close (

Date: 2024
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DOI: 10.1038/s41467-024-49936-0

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