THERMAL BOUNDARY CONDUCTANCE: A Materials Science Perspective
نویسندگان
چکیده
The thermal boundary conductance (TBC) of materials pairs in atomically intimate contact is reviewed as a practical guide for materials scientists. First, analytical and computational models of TBC are reviewed. Five measurement methods are then compared in terms of their sensitivity to TBC: the 3ω method, frequencyand time-domain thermoreflectance, the cut-bar method, and a composite effective thermal conductivity method. The heart of the review surveys 30 years of TBC measurements around room temperature, highlighting the materials science factors experimentally proven to influence TBC. These factors include the bulk dispersion relations, acoustic contrast, and interfacial chemistry and bonding. The measured TBCs are compared across a wide range of materials systems by using the maximum transmission limit, which with an attenuated transmission coefficient proves to be a good guideline for most clean, strongly bonded interfaces. Finally, opportunities for future research are discussed.
منابع مشابه
Anharmonic Phonon Interactions at Interfaces and Contributions to Thermal Boundary Conductance
Continued reduction in characteristic dimensions in nanosystems has given rise to increasing importance of material interfaces on the overall system performance. With regard to thermal transport, this increases the need for a better fundamental understanding of the processes affecting interfacial thermal transport, as characterized by the thermal boundary conductance. When thermal boundary cond...
متن کاملThe Effect of Interstitial Layers on Thermal Boundary Conductance between Lennard-jones Crystals
Thermal transport at the interface between Lennard-Jones crystals is explored via non-equilibrium molecular dynamics simulations. The vibrational properties of each crystal are varied by changing the atomic mass of the crystal. By applying a constant thermal flux across the two-crystal composite system, a steady-state temperature gradient is established and thermal boundary conductance at the i...
متن کاملContributions of Anharmonic Phonon Interactions to Thermal Boundary Conductance
* This manuscript has been authored by Sandia Corporation under Contract No. DE-AC04-94AL85000 with the U.S. Department of Energy. The United States Government retains and the publisher, by accepting this article for publication, acknowledges that the United States Government retains a non-exclusive, paid-up, irrevocable, world-wide license to publish or reproduce the published form of this man...
متن کاملEffects of temperature and disorder on thermal boundary conductance at solid–solid interfaces: Nonequilibrium molecular dynamics simulations
Thermal transport across interfaces is becoming increasingly important with the advent of nanostructures and nanocomposite materials. A nonequilibrium molecular dynamics (NEMD) approach is developed to investigate thermal transport across solid–solid interfaces. Thermal boundary conductance is calculated for a range of mismatched interfaces and compared to the diffuse mismatch model (DMM). The ...
متن کاملManipulating thermal conductance at metal-graphene contacts via chemical functionalization.
Graphene-based devices have garnered tremendous attention due to the unique physical properties arising from this purely two-dimensional carbon sheet leading to tremendous efficiency in the transport of thermal carriers (i.e., phonons). However, it is necessary for this two-dimensional material to be able to efficiently transport heat into the surrounding 3D device architecture in order to full...
متن کامل