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Title: Tunable thermal link

Abstract

Disclosed is a device whereby the thermal conductance of a multiwalled nanostructure such as a multiwalled carbon nanotube (MWCNT) can be controllably and reversibly tuned by sliding one or more outer shells with respect to the inner core. As one example, the thermal conductance of an MWCNT dropped to 15% of the original value after extending the length of the MWCNT by 190 nm. The thermal conductivity returned when the tube was contracted. The device may comprise numbers of multiwalled nanotubes or other graphitic layers connected to a heat source and a heat drain and various means for tuning the overall thermal conductance for applications in structure heat management, heat flow in nanoscale or microscale devices and thermal logic devices.

Inventors:
; ;
Issue Date:
Research Org.:
University of California, Oakland, CA (USA)
Sponsoring Org.:
USDOE
OSTI Identifier:
1144977
Patent Number(s):
8776870
Application Number:
12/436,253
Assignee:
The Regents of the University of California (Oakland, CA)
Patent Classifications (CPCs):
B - PERFORMING OPERATIONS B82 - NANOTECHNOLOGY B82Y - SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES
F - MECHANICAL ENGINEERING F28 - HEAT EXCHANGE IN GENERAL F28F - DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
DOE Contract Number:  
AC02-05CH11231
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY

Citation Formats

Chang, Chih-Wei, Majumdar, Arunava, and Zettl, Alexander K. Tunable thermal link. United States: N. p., 2014. Web.
Chang, Chih-Wei, Majumdar, Arunava, & Zettl, Alexander K. Tunable thermal link. United States.
Chang, Chih-Wei, Majumdar, Arunava, and Zettl, Alexander K. Tue . "Tunable thermal link". United States. https://www.osti.gov/servlets/purl/1144977.
@article{osti_1144977,
title = {Tunable thermal link},
author = {Chang, Chih-Wei and Majumdar, Arunava and Zettl, Alexander K.},
abstractNote = {Disclosed is a device whereby the thermal conductance of a multiwalled nanostructure such as a multiwalled carbon nanotube (MWCNT) can be controllably and reversibly tuned by sliding one or more outer shells with respect to the inner core. As one example, the thermal conductance of an MWCNT dropped to 15% of the original value after extending the length of the MWCNT by 190 nm. The thermal conductivity returned when the tube was contracted. The device may comprise numbers of multiwalled nanotubes or other graphitic layers connected to a heat source and a heat drain and various means for tuning the overall thermal conductance for applications in structure heat management, heat flow in nanoscale or microscale devices and thermal logic devices.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2014},
month = {7}
}

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Tunable thermal links
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