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

Andrei Nemilentsau, Slava V. Rotkin

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Abstract

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
Volume101
Issue number6
DOIs
Publication statusPublished - Aug 6 2012

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All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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