TY - JOUR
T1 - Mechanical relations between conductive and radiative heat transfer
AU - Venkataram, Prashanth S.
AU - Messina, Riccardo
AU - Cuevas, Juan Carlos
AU - Ben-Abdallah, Philippe
AU - Rodriguez, Alejandro W.
N1 - Funding Information:
The authors thank Sean Molesky for the helpful comments and suggestions. This work was supported by the National Science Foundation under Grants No. DMR-1454836, No. DMR 1420541, and No. DGE 1148900, the Cornell Center for Materials Research MRSEC (Award No. DMR1719875), the Defense Advanced Research Projects Agency (DARPA) under agreement HR00111820046, and the Spanish Ministry of Economy and Competitiveness (MINECO) (Contract No. FIS2017-84057-P). The views, opinions, and/or findings expressed herein are those of the authors and should not be interpreted as representing the official views or policies of any institution.
Publisher Copyright:
© 2020 American Physical Society.
PY - 2020/8/15
Y1 - 2020/8/15
N2 - We present a general nonequilibrium Green's function formalism for modeling heat transfer in systems characterized by linear response that establishes the formal algebraic relationships between phonon and radiative conduction, and reveals how upper bounds for the former can also be applied to the latter. We also propose an extension of this formalism to treat systems susceptible to the interplay of conductive and radiative heat transfer, which becomes relevant in atomic systems and at nanometric and smaller separations where theoretical descriptions which treat each phenomenon separately may be insufficient. We illustrate the need for such coupled descriptions by providing predictions for a low-dimensional system of carbyne wires in which the total heat transfer can differ from the sum of its radiative and conductive contributions. Our framework has ramifications for understanding heat transfer between large bodies that may approach direct contact with each other or that may be coupled by atomic, molecular, or interfacial film junctions.
AB - We present a general nonequilibrium Green's function formalism for modeling heat transfer in systems characterized by linear response that establishes the formal algebraic relationships between phonon and radiative conduction, and reveals how upper bounds for the former can also be applied to the latter. We also propose an extension of this formalism to treat systems susceptible to the interplay of conductive and radiative heat transfer, which becomes relevant in atomic systems and at nanometric and smaller separations where theoretical descriptions which treat each phenomenon separately may be insufficient. We illustrate the need for such coupled descriptions by providing predictions for a low-dimensional system of carbyne wires in which the total heat transfer can differ from the sum of its radiative and conductive contributions. Our framework has ramifications for understanding heat transfer between large bodies that may approach direct contact with each other or that may be coupled by atomic, molecular, or interfacial film junctions.
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U2 - 10.1103/PhysRevB.102.085404
DO - 10.1103/PhysRevB.102.085404
M3 - Article
AN - SCOPUS:85092154798
VL - 102
JO - Physical Review B
JF - Physical Review B
SN - 2469-9950
IS - 8
M1 - 085404
ER -