.png){kind=icon}
.png){kind=icon}
Return
Heat localization through reduced dimensionality
.png){kind=icon}
OA
AI
DOI：10.1103/PhysRevB.98.155422.png)
.png){kind=icon}
.png){kind=icon}
Share.png){kind=icon}
Save
Abstract
En 中文
We present a model to show that heat propagation away from a local source depends strongly on dimensionality, leading to dramatic localization in low-dimensional systems. An example of such a system is a carbon nanotube array. We further show that this localization is amplified due to a runaway mechanism if thermal conductivity declines rapidly with temperature. Extremely high temperatures of thousands of kelvins and gradients of hundreds of kelvins per micrometer may thus be obtained in a conductor using a modest local power source such as a laser pointer. This is of fundamental importance for high-efficiency energy conversion through thermoelectric and thermionic mechanisms, as well as various other applications.
Keywords:
LATTICE THERMAL-CONDUCTIVITY
INDUCED TEMPERATURE RISE
CW LASER-BEAM
CARBON NANOTUBES
PHONON CONFINEMENT
LIGHT-EMISSION
TRANSPORT
GRAPHENE
MEDIA
AI Summary
Key information extracted from the uploaded paper, including a brief overview, abstract, background, key highlights, visual analysis, and future outlook.
Journal
IF:
3.7
Papers:
15.4W
Citations:
41.0W