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Graphene Aerogel Templated Fabrication of Phase Change Microspheres as Thermal Buffers in Microelectronic Devices
Wang, Xuchun1,2; Li, Guangyong1; Hong, Guo3; Guo, Qiang2; Zhang, Xuetong1
2017-11-29
Source PublicationACS APPLIED MATERIALS & INTERFACES
ISSN1944-8244
Volume9Issue:47Pages:41323-41331
Abstract

Phase change materials, changing from solid to liquid and vice versa, are capable of storing and releasing a large amount of thermal energy during the phase change, and thus hold promise for numerous applications including thermal protection of electronic devices. Shaping these materials into microspheres for additional fascinating properties is efficient but challenging. In this regard, a novel phase change microsphere with the design for electrical-regulation and thermal storage/release properties was fabricated via the combination of monodispersed graphene aerogel microsphere (GAM) and phase change paraffin. A programmable method, i.e., coupling ink jetting-liquid marbling-supercritical drying (ILS) techniques, was demonstrated to produce monodispersed graphene aerogel microspheres (GAMs) with precise size-control. The resulting GAMs showed ultralow density, low electrical resistance, and high specific surface area with only ca. 5% diameter variation coefficient, and exhibited promising performance in smart switches. The phase change microspheres were obtained by capillary filling of phase change paraffin inside the GAMs and exhibited excellent properties, such as low electrical resistance, high latent heat, well sphericity, and thermal buffering. Assembling the phase change microsphere into the microcircuit, we found that this tiny device was quite sensitive and could respond to heat as low as 0.027 J.

KeywordPhase Change Microspheres Graphene Aerogel Microspheres Joule Heat Heat Flux Stabilizer
DOI10.1021/acsami.7b13969
URLView the original
Indexed BySCI
Language英语
WOS Research AreaScience & Technology - Other Topics ; Materials Science
WOS SubjectNanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS IDWOS:000417005900027
PublisherAMER CHEMICAL SOC
The Source to ArticleWOS
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被引频次[WOS]:18   [WOS记录]     [WOS相关记录]
Document TypeJournal article
专题INSTITUTE OF APPLIED PHYSICS AND MATERIALS ENGINEERING
Corresponding AuthorHong, Guo; Zhang, Xuetong
Affiliation1.Suzhou Institute of Nano-tech and Nano-bionics, Chinese Academy of Sciences, Suzhou 215123, P. R. China
2.School of Materials Science and Engineering, Shanghai University, Shanghai 200444, P. R. China
3.Institute of Applied Physics and Materials Engineering, University of Macau, Avenida da Universidade, Taipa, Macau
Corresponding Author AffilicationINSTITUTE OF APPLIED PHYSICS AND MATERIALS ENGINEERING
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Wang, Xuchun,Li, Guangyong,Hong, Guo,et al. Graphene Aerogel Templated Fabrication of Phase Change Microspheres as Thermal Buffers in Microelectronic Devices[J]. ACS APPLIED MATERIALS & INTERFACES,2017,9(47):41323-41331.
APA Wang, Xuchun,Li, Guangyong,Hong, Guo,Guo, Qiang,&Zhang, Xuetong.(2017).Graphene Aerogel Templated Fabrication of Phase Change Microspheres as Thermal Buffers in Microelectronic Devices.ACS APPLIED MATERIALS & INTERFACES,9(47),41323-41331.
MLA Wang, Xuchun,et al."Graphene Aerogel Templated Fabrication of Phase Change Microspheres as Thermal Buffers in Microelectronic Devices".ACS APPLIED MATERIALS & INTERFACES 9.47(2017):41323-41331.
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