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Title: Enhancing Modulation of Thermal Conduction in Vanadium Dioxide Thin Film by Nanostructured Nanogaps

Abstract

Efficient thermal management at the nanoscale is important for reducing energy consumption and dissipation in electronic devices, lab-on-a-chip platforms and energy harvest/conversion systems. For many of these applications, it is much desired to have a solid-state structure that reversibly switches thermal conduction with high ON/OFF ratios and at high speed. We describe design and implementation of a novel, all-solid-state thermal switching device by nanostructured phase transformation, i.e., modulation of contact pressure an d area between two poly-silicon surfaces activated by microstructural change of a vanadium dioxide (VO 2 ) thin film. Our solid-state devices demonstrate large and reversible alteration of cross-plane thermal conductance as a function of temperature, achieving a conductance ratio of at least 2.5. This new approach using nanostructured phase transformation provides new opportunities for applications that require advanced temperature and heat regulations.

Authors:
 [1];  [1];  [1];  [2];  [1];  [3];  [1];  [1]; ORCiD logo [4]
  1. Univ. of California, Berkeley, CA (United States). Dept. of Materials Science and Engineering
  2. Univ. of California, Berkeley, CA (United States). Dept. of Materials Science and Engineering; Tsinghua Univ., Beijing (China). Beijing Key Lab. of Green Chemical Reaction Engineering and Technology. Dept. of Precision Instrument
  3. Stanford Univ., CA (United States). Dept. of Materials Science and Engineering
  4. Univ. of California, Berkeley, CA (United States). Dept. of Materials Science and Engineering; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Materials Science Division
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); National Science Foundation (NSF)
OSTI Identifier:
1417621
Grant/Contract Number:  
AC02-05CH11231; DMR-1608899
Resource Type:
Accepted Manuscript
Journal Name:
Scientific Reports
Additional Journal Information:
Journal Volume: 7; Journal Issue: 1; Journal ID: ISSN 2045-2322
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; energy science and technology; materials for energy and catalysis; nanoscale materials

Citation Formats

Choe, Hwan Sung, Suh, Joonki, Ko, Changhyun, Dong, Kaichen, Lee, Sangwook, Park, Joonsuk, Lee, Yeonbae, Wang, Kevin, and Wu, Junqiao. Enhancing Modulation of Thermal Conduction in Vanadium Dioxide Thin Film by Nanostructured Nanogaps. United States: N. p., 2017. Web. doi:10.1038/s41598-017-07466-4.
Choe, Hwan Sung, Suh, Joonki, Ko, Changhyun, Dong, Kaichen, Lee, Sangwook, Park, Joonsuk, Lee, Yeonbae, Wang, Kevin, & Wu, Junqiao. Enhancing Modulation of Thermal Conduction in Vanadium Dioxide Thin Film by Nanostructured Nanogaps. United States. doi:10.1038/s41598-017-07466-4.
Choe, Hwan Sung, Suh, Joonki, Ko, Changhyun, Dong, Kaichen, Lee, Sangwook, Park, Joonsuk, Lee, Yeonbae, Wang, Kevin, and Wu, Junqiao. Wed . "Enhancing Modulation of Thermal Conduction in Vanadium Dioxide Thin Film by Nanostructured Nanogaps". United States. doi:10.1038/s41598-017-07466-4. https://www.osti.gov/servlets/purl/1417621.
@article{osti_1417621,
title = {Enhancing Modulation of Thermal Conduction in Vanadium Dioxide Thin Film by Nanostructured Nanogaps},
author = {Choe, Hwan Sung and Suh, Joonki and Ko, Changhyun and Dong, Kaichen and Lee, Sangwook and Park, Joonsuk and Lee, Yeonbae and Wang, Kevin and Wu, Junqiao},
abstractNote = {Efficient thermal management at the nanoscale is important for reducing energy consumption and dissipation in electronic devices, lab-on-a-chip platforms and energy harvest/conversion systems. For many of these applications, it is much desired to have a solid-state structure that reversibly switches thermal conduction with high ON/OFF ratios and at high speed. We describe design and implementation of a novel, all-solid-state thermal switching device by nanostructured phase transformation, i.e., modulation of contact pressure an d area between two poly-silicon surfaces activated by microstructural change of a vanadium dioxide (VO 2 ) thin film. Our solid-state devices demonstrate large and reversible alteration of cross-plane thermal conductance as a function of temperature, achieving a conductance ratio of at least 2.5. This new approach using nanostructured phase transformation provides new opportunities for applications that require advanced temperature and heat regulations.},
doi = {10.1038/s41598-017-07466-4},
journal = {Scientific Reports},
number = 1,
volume = 7,
place = {United States},
year = {2017},
month = {8}
}

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Cited by: 5 works
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