期刊
APPLIED PHYSICS LETTERS
卷 107, 期 14, 页码 -出版社
AIP Publishing
DOI: 10.1063/1.4932958
关键词
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资金
- Department of Energy, Office of Science, Basic Energy Sciences [DE-FG02-06ER46343]
- National Science Foundation [CBET-1235975]
Excitation of surface plasmons enables super-Planckian thermal radiation far beyond the blackbody limit. By patterning a single layer of graphene sheet into ribbons, the closed circular dispersion of graphene plasmons is opened to become hyperbolic, leading to broadband singularities of density of states. Extremely high-k evanescent waves can now couple with hyperbolic graphene plasmons. Consequently, a giant enhancement of the near-field radiative heat flux, by more than one order of magnitude, is demonstrated in this study using rigorous numerical simulations. The findings may open promising pathways for highly efficient thermal management, energy harvesting, and subwavelength thermal imaging. (C) 2015 AIP Publishing LLC.
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