Non-Fourier phonon heat conduction at the microscale and nanoscale
G Chen - Nature Reviews Physics, 2021 - nature.com
The description of phonon heat conduction has typically been based on Fourier diffusion
theory. However, over the past three decades, a host of interesting phonon transport …
theory. However, over the past three decades, a host of interesting phonon transport …
Phonon hydrodynamics in crystalline materials
Phonon hydrodynamics is an exotic phonon transport phenomenon that challenges the
conventional understanding of diffusive phonon scattering in crystalline solids. It features a …
conventional understanding of diffusive phonon scattering in crystalline solids. It features a …
Deformations, relaxation, and broken symmetries in liquids, solids, and glasses: A unified topological field theory
We combine hydrodynamic and field theoretic methods to develop a general theory of
phonons as Goldstone bosons in crystals, glasses, and liquids based on nonaffine …
phonons as Goldstone bosons in crystals, glasses, and liquids based on nonaffine …
Impact of electron-phonon interaction on thermal transport: A review
ABSTRACT A thorough understanding of the microscopic picture of heat conduction in
solids is critical to a broad range of applications, from thermal management of …
solids is critical to a broad range of applications, from thermal management of …
Hydrodynamic heat transfer in solids
W Chen - International Journal of Heat and Mass Transfer, 2023 - Elsevier
In solids, hydrodynamics have been observed in both amorphous and crystalline materials
under a wide range of conditions. However, its fundamental physics is still unclear. Recent …
under a wide range of conditions. However, its fundamental physics is still unclear. Recent …
Graded thermal conductivity in 2D and 3D homogeneous hotspot systems
Hotspot is a ubiquitous phenomenon in micro/nanoscale chips. Here, it is found that the
thermal conductivity is not a constant in such a homogeneous system. The hotspots in …
thermal conductivity is not a constant in such a homogeneous system. The hotspots in …
Strong strain-dependent phonon hydrodynamic window in bilayer graphene
Phonon hydrodynamics, a collective motion of phonons, has recently attracted renewed
attention since its temperature window has been greatly extended in layered materials. The …
attention since its temperature window has been greatly extended in layered materials. The …
Characterizing microscale energy transport in materials with transient grating spectroscopy
Microscale energy transport processes are crucial in microelectronics, energy-harvesting
devices, and emerging quantum materials. To study these processes, methods that can …
devices, and emerging quantum materials. To study these processes, methods that can …
Phonon vortex dynamics in graphene ribbon by solving Boltzmann transport equation with ab initio scattering rates
In this work, we study thermal phonon vortex in graphene ribbon by a discrete-ordinate
solution of phonon Boltzmann equation under Callaway's dual relaxation model. The …
solution of phonon Boltzmann equation under Callaway's dual relaxation model. The …