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|a (TOE)ost1594764
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|a (TOE)1594764
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|a TOE
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|a Influence of hBN orientation on the near-field radiative heat transfer between graphene/hBN heterostructures
|h [electronic resource]
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|a Oak Ridge, Tenn. :
|b Distributed by the Office of Scientific and Technical Information, U.S. Department of Energy,
|c 2018.
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|a Size: Article No. 032702 :
|b digital, PDF file.
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|a text
|b txt
|2 rdacontent.
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|a computer
|b c
|2 rdamedia.
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|a online resource
|b cr
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|a Published through Scitech Connect.
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|a 12/04/2018.
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|a "Journal ID: ISSN 1947-7988"
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|a Wu, Xiaohu ; Fu, Ceji ; Zhang, Zhuomin ;
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|a Georgia Inst. of Technology, Atlanta, GA (United States)
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|a USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
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|a China Scholarship Council (CSC)
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|a National Natural Science Foundation of China (NNSFC)
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|a National Science Foundation (NSF)
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|a The influence of the optic axis orientation of hexagonal boron nitride (hBN) on the near-field radiative heat transfer between hBN slabs as well as between graphene/hBN heterostructures is studied in this work. A modified 4״ transfer matrix method is employed to calculate the near-field radiative heat flux (NFRHF) between the media. The numerical results show that the NFRHF will decrease when the optic axis of hBN is tilted off the direction of the energy flow for bare hBN slabs. The reason is that hyperbolic phonon polaritons (HPPs) excited in the hyperbolic bands of Type I are largely suppressed for tilted optic axis though surface phonon polaritons can be excited in the hyperbolic bands. On the contrary, the NFRHF between two graphene/hBN heterostructures is affected by the coupling of SPPs excited at the vacuum/graphene interface with those at the graphene/hBN interface and the formation of a hybrid mode, by which the NFRHF is maximum when the hBN slabs are arranged with strong in-plane anisotropy of the surface. The results obtained in this work may provide a promising way for manipulating near-field radiative heat transfer between anisotropic materials.
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|b SC0018369.
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|b 201706010271.
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|b 51576004.
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|b CBET-1603761.
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|a 36 materials science
|2 local.
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|a Near-field
|2 local.
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|a Thermal radiation
|2 local.
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|a Hexagonal boron nitride
|2 local.
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|a Graphene/hbn heterostructure
|2 local.
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|a Optic axis
|4 spn
|4 spn
|4 spn
|4 spn
|2 local.
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|a United States.
|b Department of Energy.
|b Office of Scientific and Technical Information
|4 dst.
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|u http://www.osti.gov/servlets/purl/1594764
|z Full Text (via OSTI)
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|a .b110038745
|b 11-30-21
|c 05-11-20
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|b 05-11-20
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|p Can circulate
|a University of Colorado Boulder
|b Online
|c Online
|d Online
|i web
|n 1
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