Ultra-broadband directional thermal emission
Abstract: Directional control of thermal emission over its broad wavelength range is a fundamental challenge. Gradient epsilon-near-zero (ENZ) material supporting Berreman mode has been proposed as a promising approach. However, the bandwidth is still inherently limited due to the availability of ENZ materials covering a broad bandwidth and additional undesired omnidirectional modes in multilayer stacking with increased thickness. Here, we show that broadband directional thermal emission can be realized beyond the previously considered epsilon-near-zero and Berreman mode region. We then establish a universal approach based on effective medium theory to realizing ultra-broadband directional thermal emitter. We numerically demonstrate strong (emissivity >0.8) directional (80 ± 5°) thermal emission covering the entire thermal emission wavelength range (5–30 μm) by using only two materials. This approach offers a new capability for manipulating thermal emission with potential applications in high-efficiency information encryption, energy collection and utilization, thermal camouflaging, and infrared detection.
- Standort
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Deutsche Nationalbibliothek Frankfurt am Main
- Umfang
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Online-Ressource
- Sprache
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Englisch
- Erschienen in
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Ultra-broadband directional thermal emission ; volume:13 ; number:5 ; year:2024 ; pages:793-801 ; extent:9
Nanophotonics ; 13, Heft 5 (2024), 793-801 (gesamt 9)
- Urheber
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Wang, Qiuyu
Liu, Tianji
Li, Longnan
Huang, Chen
Wang, Jiawei
Xiao, Meng
Li, Yang
Li, Wei
- DOI
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10.1515/nanoph-2023-0742
- URN
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urn:nbn:de:101:1-2024031214415217094033
- Rechteinformation
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Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
- Letzte Aktualisierung
- 14.08.2025, 10:55 MESZ
Datenpartner
Deutsche Nationalbibliothek. Bei Fragen zum Objekt wenden Sie sich bitte an den Datenpartner.
Beteiligte
- Wang, Qiuyu
- Liu, Tianji
- Li, Longnan
- Huang, Chen
- Wang, Jiawei
- Xiao, Meng
- Li, Yang
- Li, Wei
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