Optimization of nanotube thermal interconnects for near-field radiative heat transport

Andrei Nemilentsau, Slava V. Rotkin

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Near-field radiative heat transfer between vertical single-wall nanotube (SWNT) forest and different substrates was computed using experimental parametrization for dielectric response of α-quartz, α-sapphire, GaAs, 6H-BN, h-SiC, Au, Ag, Al, Ni, Ti, Cu materials. Rational choice of material and optical matching at the interface allow one to achieve maximum near-field Kapitza conductance of the SWNT forest exceeding 60 MW / (Km 2) on polar dielectrics at 300 K. Such an efficient thermal coupling is due to the near-field overlap of surface polaritons of the substrate and SWNT plasmons, further enhanced by tweaking the forest thickness.

Original languageEnglish (US)
Article number063115
JournalApplied Physics Letters
Issue number6
StatePublished - Aug 6 2012

Bibliographical note

Funding Information:
This work was supported by DoD (AFOSR FA9550-11-1-0185) and Lehigh University (Faculty Innovation Grant).


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