Thermal radiation dominated heat transfer in nanomechanical silicon nitride drum resonators

Markus Piller, Pedram Sadeghi, Robert G. West, Niklas Luhmann, Paolo Martini, Ole Hansen, Silvan Schmid*

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

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Abstract

Nanomechanical silicon nitride (SiN) drum resonators are currently employed in various fields of applications that arise from their unprecedented frequency response to physical quantities. In the present study, we investigate the thermal transport in nanomechanical SiN drum resonators by analytical modeling, computational simulations, and experiments for a better understanding of the underlying heat transfer mechanism causing the thermal frequency response. Our analysis shows that radiative heat loss is a non-negligible heat transfer mechanism in nanomechanical SiN resonators, limiting their thermal responsivity and response time. This finding is important for optimal resonator designs for thermal sensing applications as well as cavity optomechanics.
Original languageEnglish
Article number034101
JournalApplied Physics Letters
Volume117
Issue number3
Number of pages5
ISSN0003-6951
DOIs
Publication statusPublished - 2020

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