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Reconstructing phonon mean free path contributions to thermal conductivity using nanoscale membranes
J. Cuffe,Jeffrey K. Eliason,Alexei Maznev,Kimberlee C. Collins,Jeremy A. Johnson,Andrey Shchepetov,Mika Prunnila,Jouni Ahopelto,Clivia M. Sotomayor Torres,Gang Chen,Keith A. Nelson +10 more
TLDR
In this article, thermal conductivity measurements of thin Si membranes spanning a wide thickness range were used to characterize how bulk thermal conductivities are distributed over phonon mean free paths, and a decrease in the conductivity from 74% to 13% of the bulk value was attributed to diffuse phonon boundary scattering.Abstract:
Knowledge of the mean free path distribution of heat-carrying phonons is key to understanding phonon-mediated thermal transport. We demonstrate that thermal conductivity measurements of thin membranes spanning a wide thickness range can be used to characterize how bulk thermal conductivity is distributed over phonon mean free paths. A non-contact transient thermal grating technique was used to measure the thermal conductivity of suspended Si membranes ranging from 15 to 1500 nm in thickness. A decrease in the thermal conductivity from 74% to 13% of the bulk value is observed over this thickness range, which is attributed to diffuse phonon boundary scattering. Due to the well-defined relation between the membrane thickness and phonon mean free path suppression, combined with the range and accuracy of the measurements, we can reconstruct the bulk thermal conductivity accumulation vs. phonon mean free path, and compare with theoretical models.read more
Citations
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A review of recent advances in thermophysical properties at the nanoscale: From solid state to colloids
Lin Qiu,Lin Qiu,Ning Zhu,Yanhui Feng,Efstathios E. Michaelides,Gaweł Żyła,Dengwei Jing,Xinxin Zhang,Pamela M. Norris,Christos N. Markides,Omid Mahian +10 more
TL;DR: In this paper, a review of recent advances in the measurement and modeling of thermophysical properties at the nanoscale (from the solid state to colloids) is presented, including thermal conductivity, dynamic viscosity, specific heat capacity, and density.
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Non-Fourier phonon heat conduction at the microscale and nanoscale
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References
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Journal ArticleDOI
Thermal properties of graphene and nanostructured carbon materials
TL;DR: The thermal properties of carbon materials are reviewed, focusing on recent results for graphene, carbon nanotubes and nanostructured carbon materials with different degrees of disorder, with special attention given to the unusual size dependence of heat conduction in two-dimensional crystals.
Journal ArticleDOI
High-performance bulk thermoelectrics with all-scale hierarchical architectures
Kanishka Biswas,Jiaqing He,Ivan Blum,Ivan Blum,Chun I. Wu,Timothy P. Hogan,Timothy P. Hogan,David N. Seidman,Vinayak P. Dravid,Mercouri G. Kanatzidis,Mercouri G. Kanatzidis +10 more
TL;DR: It is shown that heat-carrying phonons with long mean free paths can be scattered by controlling and fine-tuning the mesoscale architecture of nanostructured thermoelectric materials, and an increase in ZT beyond the threshold of 2 highlights the role of, and need for, multiscale hierarchical architecture in controlling phonon scattering in bulk thermoeLECTrics.
Journal ArticleDOI
The conductivity of thin metallic films according to the electron theory of metals
TL;DR: In this paper, the conductivity of thin films of the alkali metals has been measured in the H. W. Wills Physical Laboratory, Bristol and the experimental results were compared with a formula derived on the basis of this hypothesis.
Book
Electrons and Phonons: The Theory of Transport Phenomena in Solids
TL;DR: In this paper, the theory of electrical and thermal conduction in metals, semiconductors, and insulators is written at a level appropriate to graduate students and research workers and assumes some knowledge of wave mechanics in its reader.
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