2011
DOI: 10.1016/j.ijthermalsci.2010.12.002
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Investigation of thermal rectification in bi-layer nanofilm by molecular dynamics

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Cited by 16 publications
(5 citation statements)
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“…This almost unchanged overlap of phonon spectra has also been reported in other simulation studies. 42,62,63 To have a more intutive argument, in comparison to the mechanism of TR in mass graded systems, the hydrogenated part can be considered as mass graded part of the system. From phonon transport point of view, the difference between the two sides of the system is also increased by sp 3 bonds of hydrogenated carbon atoms in HCNT that can considerably change the vibrational density of states of HCNT along radial or longitudinal directions.…”
Section: Resultsmentioning
confidence: 99%
“…This almost unchanged overlap of phonon spectra has also been reported in other simulation studies. 42,62,63 To have a more intutive argument, in comparison to the mechanism of TR in mass graded systems, the hydrogenated part can be considered as mass graded part of the system. From phonon transport point of view, the difference between the two sides of the system is also increased by sp 3 bonds of hydrogenated carbon atoms in HCNT that can considerably change the vibrational density of states of HCNT along radial or longitudinal directions.…”
Section: Resultsmentioning
confidence: 99%
“…The second mechanism that has been promoted to explain thermal rectification at interfaces is the mismatch of phonon spectra across the interface [8,26]. Because argon is a lighter atom, it's maximum frequency is larger than that of krypton.…”
Section: Resultsmentioning
confidence: 99%
“…The goal of the molecular dynamics work is to show theoretical evidence of the existence of thermal rectification due to the difference in phonon transmission between two different materials due to a difference in material properties, specifically frequency content, and to explain how scattering at fabricated interfaces results in our limited ability to measure thermally rectifying behavior experimentally. Currently there exist several other studies that use non-equilibrium molecular dynamics to investigate thermal rectification in interfacial systems [8].…”
mentioning
confidence: 99%
“…There is larger overlap of the phonon spectra in the direction of high heat flux and big mismatch of the phonon spectra in the reverse direction. But Wang et al [23] found that the direct relation between overlap or separation of the vibrational density of states and the thermal rectification is not obvious in the investigation of bi-layer nanofilm. Actually, many factors are responsible for the thermal rectification depending on materials, geometry and surface roughness, etc.…”
Section: Introductionmentioning
confidence: 99%