Mobility of the3He solid-liquid interface: Experiment and theory

Puech, L.; Bonfait, G.; Castaing, B.

doi:10.1007/bf00683467

Cited by 85 publications

(26 citation statements)

References 7 publications

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“…In the next section, we modify a GK approach for interfacial transport proposed by Puech et al [25], and apply it to a simple mass-mismatch LJ interface. A GK approach may be advantageous over the direct method as its equilibrium nature ensures a uniform system temperature.…”

Section: Interface Thermal Resistance Predictionmentioning

confidence: 99%

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Molecular Dynamics Prediction of the Thermal Resistance of Solid-Solid Interfaces in Superlattices

McGaughey

2006

Heat Transfer, Volume 1

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Molecular dynamics simulations are used to predict the thermal resistance of solid-solid interfaces in crystalline superlattices using a new Green-Kubo formula. The materials on both sides of the interfaces studied are modeled with the LennardJones potential and are only differentiated by their masses. To obtain the interface thermal resistance, a correlation length in the bulk materials is first predicted, which approaches a systemsize independent value for larger systems. The interface thermal resistance is found to initially increase as the layer length is increased, and then to decrease as the phonon transport shifts from a regime dominated by ballistic transport to one dominated by diffusive transport. NOMENCLATUREA area E energy F force vector k thermal conductivity k B Boltzmann constant L length m mass r particle position vector, particle separation vector q planar energy flux R thermal resistance R m mass ratio

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Section: Interface Thermal Resistance Predictionmentioning

confidence: 99%

“…Puech et al [25] suggest that the thermal resistance of the interface between materials A and B can be predicted using the Green-Kubo formula…”

Section: Planar Flux Green-kubo Formula For the In-terface Thermal Rementioning

confidence: 99%

Molecular Dynamics Prediction of the Thermal Resistance of Solid-Solid Interfaces in Superlattices

McGaughey

2006

Heat Transfer, Volume 1

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“…In contrast to the GF method, molecular dynamics (MD) simulations can straightforwardly describe the inelastic effects through the anharmonic interatomic forces used in integrating the classical equations of motion [12]. * kimmo.saaskilahti@aalto.fi † sebastian.volz@ecp.fr MD is, however, directly suitable only for calculating the total interfacial thermal resistance [13][14][15][16][17][18], which cannot give a detailed, spectrally resolved picture of energy transfer processes at the interface.…”

Section: Introductionmentioning

confidence: 99%

Role of anharmonic phonon scattering in the spectrally decomposed thermal conductance at planar interfaces

et al. 2014

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A detailed understanding of the vibrational heat transfer mechanisms between solids is essential for the efficient thermal engineering and control of nanomaterials. We investigate the frequency dependence of anharmonic scattering and interfacial thermal conduction between two acoustically mismatched solids in planar contact by calculating the spectral decomposition of the heat current flowing through an interface between two materials. The calculations are based on analyzing the correlations of atomic vibrations using the data extracted from nonequilibrium molecular dynamics simulations. Inelastic effects arising from anharmonic interactions are shown to significantly facilitate heat transfer between two mass-mismatched face-centered-cubic lattices even at frequencies exceeding the cutoff frequency of the heavier material due to (i) enhanced dissipation of evanescent vibrational modes and (ii) frequency-doubling and frequency-halving three-phonon energy transfer processes at the interface. The results provide substantial insight into interfacial energy transfer mechanisms, especially at high temperatures, where inelastic effects become important and other computational methods are ineffective.

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“…l K is simply the thickness of material (1) equivalent to the interface from a thermal point of view (see figure 1). The Kapitza resistance has been mostly studied in the case of superfluid Helium in contact with a solid, or in the case of grain boundaries between pure crystals [6,7]. In both cases λ is large, so that the Kapitza length is large and measurable effects can be expected.…”

Section: Introduction: Bulk and Interfacial Transport Coefficientsmentioning

confidence: 99%

Kapitza resistance at the liquid—solid interface

2003

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Mobility of the3He solid-liquid interface: Experiment and theory

Cited by 85 publications

References 7 publications

Molecular Dynamics Prediction of the Thermal Resistance of Solid-Solid Interfaces in Superlattices

Molecular Dynamics Prediction of the Thermal Resistance of Solid-Solid Interfaces in Superlattices

Role of anharmonic phonon scattering in the spectrally decomposed thermal conductance at planar interfaces

Kapitza resistance at the liquid—solid interface

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