Applied Physics A

, Volume 96, Issue 2, pp 357–362

Breakdown of the Planck blackbody radiation law at nanoscale gaps

Authors

    • Department of Mechanical EngineeringColumbia University
  • Sheng Shen
    • Department of Mechanical EngineeringMassachusetts Institute of Technology
  • Lu Hu
    • ExxonMobil Upstream Research Company
  • Xiaoyuan Chen
    • Department of Mechanical EngineeringMassachusetts Institute of Technology
  • Gang Chen
    • Department of Mechanical EngineeringMassachusetts Institute of Technology
Article

DOI: 10.1007/s00339-009-5203-5

Cite this article as:
Narayanaswamy, A., Shen, S., Hu, L. et al. Appl. Phys. A (2009) 96: 357. doi:10.1007/s00339-009-5203-5

Abstract

The Planck theory of blackbody radiation imposes a limit on the maximum radiative transfer between two objects at given temperatures. When the two objects are close enough, near-field effects due to tunneling of evanescent waves lead to enhancement of radiative transfer above the Planck limit. When the objects can support electromagnetic surface polaritons, the enhancement can be a few orders-of-magnitude larger than the blackbody limit. In this paper, we summarize our recent measurements of radiative transfer between two parallel silica surfaces and between a silica microsphere and a flat silica surface that show unambiguous evidence of enhancement of radiative transfer due to near-field effects above the Planck limit.

PACS

42.25.Bs44.40.+a03.50.De05.40.-a87.64.Dz07.79.Lh

Copyright information

© Springer-Verlag 2009