Molecular dynamics (MD) simulations are used to study, in detail, the transfer of thermal (vibrational) energy between objects with discrete vibrational spectra to those with a semi-continuum of spectra. The transfer of energy is stochastic and strongly dependent on the instantaneous separation between the bodies. The insight from the MD simulations can be captured with a simple classical model that agrees well with quantum models. This model can be used to optimize systems for efficient frequency selective energy transfer, which can be used in designing a chemical sensor through nanomechanical resonance spectroscopy.
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Research Article| December 19 2013
Resonant behavior in heat transfer across weak molecular interfaces
Sophia R. Sklan;
P. Alex Greaney;
P. Alex Greaney a)
Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139,
School of Mechanical, Industrial, and Manufacturing Engineering, Oregon State University, Corvalis, Oregon 97331,
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Sophia R. Sklan, P. Alex Greaney, Jeffrey C. Grossman; Resonant behavior in heat transfer across weak molecular interfaces. J. Appl. Phys. 21 December 2013; 114 (23): 234308. https://doi.org/10.1063/1.4851035
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