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Residual surface charge mediated near-field radiative energy transfer: A topological insulator analog
- Source :
- Materials Today Physics, 2023,31: 100984
- Publication Year :
- 2022
-
Abstract
- We study the modifications of near-field radiative energy transfer (NFRET) caused by residual surface charges, which are common in micro- and nano-systems like NEMS/MEMS. The host object with the residual surface charges and the inherent bulk state can be treated as an analog of the real three-dimensional topological insulator, which is inherent of also both surface states and bulk states and is promising to modulate NFRET. Through constructing such a topological insulator analog, we aim to modulate NFRET concerning only common trivial materials. Besides the well-known resonant modes (surface polariton and localized surface polariton) supported by the bulk state, the residual surface charges give rise to an additional temperature-dependent mode providing a new heat flux channel. For low temperatures we find a giant surface-charge-induced enhancement of the NFRET due to a good match between the surface-charge-induced resonance and the Planck window. However, for relative high temperatures where the Fr\"{o}hlich resonance dominates the heat transfer rather the surface-charge-induced resonance, the residual charges result in a weakening of the NFRET. This work paves way for understanding and modulating the near-field radiative energy transfer for micro- and nano-systems.<br />Comment: 8 pages, 7 figures
- Subjects :
- Physics - Applied Physics
Subjects
Details
- Database :
- arXiv
- Journal :
- Materials Today Physics, 2023,31: 100984
- Publication Type :
- Report
- Accession number :
- edsarx.2209.07256
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1016/j.mtphys.2023.100984