Near-Field Radiative Heat Transfer between Macroscopic Planar Surfaces

Authors

R. S. Ottens
Volker Quetschke, The University of Texas Rio Grande Valley
Stacy Wise
A. A. Alemi
R. Lundock
G. Mueller
D. H. Reitze
D. B. Tanner
B. F. Whiting

Document Type

Article

Publication Date

6-30-2011

Abstract

Near-field radiation allows heat to propagate across a small vacuum gap at rates several orders of magnitude above that of far-field, blackbody radiation. Although heat transfer via near-field effects has been discussed for many years, experimental verification of this theory has been very limited. We have measured the heat transfer between two macroscopic sapphire plates, finding an increase in agreement with expectations from theory. These experiments, conducted near 300K, have measured the heat transfer as a function of separation over mm to μm and as a function of temperature differences between 2.5 and 30K. The experiments demonstrate that evanescence can be put to work to transfer heat from an object without actually touching it. © 2011 American Physical Society.

Comments

© Physical Review Letters. Original version available at: http://doi.org/10.1103/PhysRevLett.107.014301

Recommended Citation

R. S. Ottens, et. al., (2011) Near-field radiative heat transfer between macroscopic planar surfaces.Physical Review Letters107:1. DOI: http://doi.org/10.1103/PhysRevLett.107.014301

Publication Title

Physical Review Letters

DOI

10.1103/PhysRevLett.107.014301