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Electronic Modulation of Near-Field Radiative Transfer in Graphene Field Effect Heterostructures

Thomas, Nathan H. and Sherrott, Michelle C. and Brouillet, Jeremy and Atwater, Harry A. and Minnich, Austin J. (2019) Electronic Modulation of Near-Field Radiative Transfer in Graphene Field Effect Heterostructures. Nano Letters, 19 (6). pp. 3898-3904. ISSN 1530-6984. http://resolver.caltech.edu/CaltechAUTHORS:20190530-095539038

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Abstract

Manipulating heat flow in a controllable and reversible manner is a topic of fundamental and practical interest. Numerous approaches to perform thermal switching have been reported, but they typically suffer from various limitations, for instance requiring mechanical modulation of a submicron gap spacing or only operating in a narrow temperature window. Here, we report the experimental modulation of radiative heat flow by electronic gating of a graphene field effect heterostructure without any moving elements. We measure a maximum heat flux modulation of 4 ± 3% and an absolute modulation depth of 24 ± 7 mW m^(–2) V^(–1) in samples with vacuum gap distances ranging from 1 to 3 μm. The active area in the samples through which heat is transferred is ∼1 cm^2, indicating the scalable nature of these structures. A clear experimental path exists to realize switching ratios as large as 100%, laying the foundation for electronic control of near-field thermal radiation using 2D materials.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1021/acs.nanolett.9b01086DOIArticle
ORCID:
AuthorORCID
Thomas, Nathan H.0000-0003-4648-5325
Sherrott, Michelle C.0000-0002-7503-9714
Atwater, Harry A.0000-0001-9435-0201
Minnich, Austin J.0000-0002-9671-9540
Additional Information:© 2019 American Chemical Society. Received: March 15, 2019; Revised: May 10, 2019; Published: May 29, 2019. This work is part of the Light-Material Interactions in Energy Conversion Energy Frontier Research Center funded by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences under Award No. DE-SC0001293. This material is based upon work supported by the National Science Foundation Graduate Research Fellowship under Grant No. 1144469. M.C.S. gratefully acknowledges fellowship support from the Resnick Sustainability Institute. The authors recognize the Kavli NanoScience Institute at Caltech and to thank Dr. Ognjen Ilic for insightful conversation. Author Contributions: N.H.T. and A.J.M. conceived and designed the experiment. N.H.T. fabricated samples and conducted numerical simulations. M.C.S. assisted in design and sample fabrication. J.B. assisted in sample fabrication. N.H.T., H.A.A., and A.J.M. wrote the manuscript. All authors commented and approved the manuscript. The authors declare no competing financial interest.
Group:Kavli Nanoscience Institute, Resnick Sustainability Institute
Funders:
Funding AgencyGrant Number
Department of Energy (DOE)DE-SC0001293
NSF Graduate Research FellowshipDGE-1144469
Resnick Sustainability InstituteUNSPECIFIED
Subject Keywords:Near-field radiative transfer; graphene; electronic modulation; thermal switches
Record Number:CaltechAUTHORS:20190530-095539038
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20190530-095539038
Official Citation:Electronic Modulation of Near-Field Radiative Transfer in Graphene Field Effect Heterostructures. Nathan H. Thomas, Michelle C. Sherrott, Jeremy Broulliet, Harry A. Atwater, and Austin J. Minnich. Nano Letters 2019 19 (6), 3898-3904. DOI: 10.1021/acs.nanolett.9b01086
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:95955
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:30 May 2019 17:05
Last Modified:13 Jun 2019 14:55

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