Resonant behavior in heat transfer across weak molecular interfaces

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  • 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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  • Sklan, S. R., Greaney, P. A., & Grossman, J. C. (2013). Resonant behavior in heat transfer across weak molecular interfaces. Journal of Applied Physics, 114(23), 234308. doi:10.1063/1.4851035
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  • 114
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  • 23
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  • This project received funding from the Defense ThreatReduction Agency-Joint Science and Technology Office forChemical and Biological Defense (Grant No. HDTRA1-09-1-0006), and National Science Foundation GraduateResearch Fellowship under Grant No. 1122374. Thisresearch used resources of the National Energy ResearchScientific Computing Center (NERSC), which is supportedby the Office of Science of the U.S. Department of Energyunder Contract No. DE-AC02-05CH11231.
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