Modeling near-field radiative heat transfer from sharp objects using a general three-dimensional numerical scattering technique
Author(s)McCauley, Alexander Patrick; Reid, M. T. Homer; Krueger, Matthias Helmut Guenter; Johnson, Steven G.
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We develop a general numerical method to calculate the nonequilibrium radiative heat transfer between a plate and compact objects of arbitrary shapes, making the first accurate theoretical predictions for the total heat transfer and the spatial heat flux profile for three-dimensional compact objects including corners or tips. In contrast to the known sphere-plate heat transfer, we find qualitatively different scaling laws for cylinders and cones at small separations, and, in contrast to a flat or slightly curved object, a sharp cone exhibits a local minimum in the spatially resolved heat flux directly below the tip. Our results may have important implications for near-field thermal writing and surface roughness.
DepartmentMassachusetts Institute of Technology. Department of Mathematics; Massachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. Research Laboratory of Electronics
Physical Review B
American Physical Society
McCauley, Alexander et al. “Modeling Near-field Radiative Heat Transfer from Sharp Objects Using a General Three-dimensional Numerical Scattering Technique.” Physical Review B 85.16 (2012). ©2012 American Physical Society
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