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...

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Autores principales:	Hwan Sung Choe, Joonki Suh, Changhyun Ko, Kaichen Dong, Sangwook Lee, Joonsuk Park, Yeonbae Lee, Kevin Wang, Junqiao Wu
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/d0ccad50c5f34fc59eb70e0320b44a19
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spelling	oai:doaj.org-article:d0ccad50c5f34fc59eb70e0320b44a192021-12-02T11:53:00ZEnhancing Modulation of Thermal Conduction in Vanadium Dioxide Thin Film by Nanostructured Nanogaps10.1038/s41598-017-07466-42045-2322https://doaj.org/article/d0ccad50c5f34fc59eb70e0320b44a192017-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-07466-4https://doaj.org/toc/2045-2322Abstract 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. Here we describe design and implementation of a novel, all-solid-state thermal switching device by nanostructured phase transformation, i.e., modulation of contact pressure and area between two poly-silicon surfaces activated by microstructural change of a vanadium dioxide (VO2) 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. Our new approach using nanostructured phase transformation provides new opportunities for applications that require advanced temperature and heat regulations.Hwan Sung ChoeJoonki SuhChanghyun KoKaichen DongSangwook LeeJoonsuk ParkYeonbae LeeKevin WangJunqiao WuNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-8 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Hwan Sung Choe Joonki Suh Changhyun Ko Kaichen Dong Sangwook Lee Joonsuk Park Yeonbae Lee Kevin Wang Junqiao Wu Enhancing Modulation of Thermal Conduction in Vanadium Dioxide Thin Film by Nanostructured Nanogaps
description	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. Here we describe design and implementation of a novel, all-solid-state thermal switching device by nanostructured phase transformation, i.e., modulation of contact pressure and area between two poly-silicon surfaces activated by microstructural change of a vanadium dioxide (VO2) 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. Our new approach using nanostructured phase transformation provides new opportunities for applications that require advanced temperature and heat regulations.
format	article
author	Hwan Sung Choe Joonki Suh Changhyun Ko Kaichen Dong Sangwook Lee Joonsuk Park Yeonbae Lee Kevin Wang Junqiao Wu
author_facet	Hwan Sung Choe Joonki Suh Changhyun Ko Kaichen Dong Sangwook Lee Joonsuk Park Yeonbae Lee Kevin Wang Junqiao Wu
author_sort	Hwan Sung Choe
title	Enhancing Modulation of Thermal Conduction in Vanadium Dioxide Thin Film by Nanostructured Nanogaps
title_short	Enhancing Modulation of Thermal Conduction in Vanadium Dioxide Thin Film by Nanostructured Nanogaps
title_full	Enhancing Modulation of Thermal Conduction in Vanadium Dioxide Thin Film by Nanostructured Nanogaps
title_fullStr	Enhancing Modulation of Thermal Conduction in Vanadium Dioxide Thin Film by Nanostructured Nanogaps
title_full_unstemmed	Enhancing Modulation of Thermal Conduction in Vanadium Dioxide Thin Film by Nanostructured Nanogaps
title_sort	enhancing modulation of thermal conduction in vanadium dioxide thin film by nanostructured nanogaps
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/d0ccad50c5f34fc59eb70e0320b44a19
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Enhancing Modulation of Thermal Conduction in Vanadium Dioxide Thin Film by Nanostructured Nanogaps

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