| Autor: |
Kezhang Shi, Julian Evans, Sailing He, Xinan Xu, Zhaoyang Chen |
| Rok vydání: |
2021 |
| Předmět: |
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| Zdroj: |
Advanced materials (Deerfield Beach, Fla.). 33(52) |
| ISSN: |
1521-4095 |
| Popis: |
Collective optoelectronic phenomena such as plasmons and phonon polaritons can drive processes in many branches of nanoscale science. Classical physics predicts that a perfect thermal emitter operates at the black body limit. Numerous experiments have shown that surface phonon polaritons allow emission two orders of magnitude above the limit at a gap distance of ∼ 50 nm. This work shows that a supported multilayer graphene structure improves the state of the art by around one order of magnitude with a ∼ 1129 fold-enhancement at a gap distance of ∼ 55 nm. Coupled surface plasmon polaritons at mid- and far-infrared frequencies allow for near-unity photon tunneling across a broad swath of k-space enabling the improved result. Electric tuning of the Fermi-level allows for the detailed characterization and optimization of the colossal nanoscale heat transfer. This article is protected by copyright. All rights reserved. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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