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Fabrication and Characterization of Superconducting Resonators

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Measurement of Near-Field Radiative Heat Transfer at Deep Sub-Wavelength Distances using Nanomechanical Resonators.

Mathieu Giroux¹, Michel Stephan¹, Maxime Brazeau¹

¹Department of Mechanical Engineering, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada.

|September 6, 2023

Summary

This study demonstrates near-field radiative heat transfer (NFRHT) using widely available silicon nitride nanomechanical resonators. This approach simplifies NFRHT measurements and enables simultaneous study of thermal radiation forces.

Keywords:

Near-field radiation nanomechanical resonators surface polariton thermal radiation

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Published on: April 26, 2014

Area of Science:

Physics
Materials Science
Nanotechnology

Background:

Near-field radiative heat transfer (NFRHT) measurements typically require custom microdevices, limiting reproducibility.
Silicon nitride (SiN) membranes are versatile substrates used in electron microscopy and optomechanics, offering a readily available alternative.

Purpose of the Study:

To investigate NFRHT using standard SiN membrane nanomechanical resonators.
To explore the feasibility of using these resonators for deep sub-wavelength NFRHT measurements.
To assess the potential for simultaneous measurement of NFRHT and thermal radiation forces.

Main Methods:

Utilized SiN membrane nanomechanical resonators as a platform for NFRHT studies.
Performed NFRHT measurements between a glass radiator and a SiN membrane resonator at distances down to 180 nm.
Investigated heat transfer dominated by surface polariton resonances.

Main Results:

Achieved deep sub-wavelength NFRHT measurements using accessible SiN resonators.
Demonstrated an effective heat transfer area comparable to custom microfabricated devices.
Confirmed the dominance of surface polariton resonances at minimal distances.

Conclusions:

SiN membrane nanomechanical resonators provide a reproducible and accessible method for NFRHT measurements.
This technique facilitates studying NFRHT at deep sub-wavelength separations.
Opens avenues for simultaneously measuring NFRHT and thermal radiation forces, such as Casimir force corrections.