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Title: Giant enhancement of nanoscale thermal radiation based on hyperbolic graphene plasmons

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 here using rigorous numerical simulations. The findings may open promising pathways for highly efficient thermal management, energy harvesting, and sub-wavelength thermal imaging.
Authors:
ORCiD logo [1] ;  [1]
  1. Georgia Inst. of Technology, Atlanta, GA (United States). G.W. Woodruff School of Mechanical Engineering
Publication Date:
Grant/Contract Number:
FG02-06ER46343; CBET-1235975
Type:
Accepted Manuscript
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 107; Journal Issue: 14; Journal ID: ISSN 0003-6951
Publisher:
American Institute of Physics (AIP)
Research Org:
Georgia Inst. of Technology, Atlanta, GA (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); National Science Foundation (NSF)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; graphene; dispersion; energy harvester; blackbody; wave mechanics; nanoribbons; plasmons; infrared imaging; nano optics; thermodynamic states and processes
OSTI Identifier:
1469479
Alternate Identifier(s):
OSTI ID: 1223327

Liu, X. L., and Zhang, Z. M.. Giant enhancement of nanoscale thermal radiation based on hyperbolic graphene plasmons. United States: N. p., Web. doi:10.1063/1.4932958.
Liu, X. L., & Zhang, Z. M.. Giant enhancement of nanoscale thermal radiation based on hyperbolic graphene plasmons. United States. doi:10.1063/1.4932958.
Liu, X. L., and Zhang, Z. M.. 2015. "Giant enhancement of nanoscale thermal radiation based on hyperbolic graphene plasmons". United States. doi:10.1063/1.4932958. https://www.osti.gov/servlets/purl/1469479.
@article{osti_1469479,
title = {Giant enhancement of nanoscale thermal radiation based on hyperbolic graphene plasmons},
author = {Liu, X. L. and Zhang, Z. M.},
abstractNote = {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 here using rigorous numerical simulations. The findings may open promising pathways for highly efficient thermal management, energy harvesting, and sub-wavelength thermal imaging.},
doi = {10.1063/1.4932958},
journal = {Applied Physics Letters},
number = 14,
volume = 107,
place = {United States},
year = {2015},
month = {10}
}