Flexible, all-inorganic actuators based on vanadium dioxide and carbon nanotube bimorphs - 文章详情页

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摘要：

Flexible　actuators　responsive　to　multiple　stimuli　are　much　desired　in　wearable　electronics.　However,　general　designs　containing　organic　materials　are　usually　subject　to　slow　response　and　limited　lifetime,　or　high　triggering　threshold.　In　this　study,　we　develop　flexible,　all-inorganic　actuators　based　on　bimorph　structures　composed　of　vanadium　dioxide　(VO2)　and　carbon　nanotube　(CNT)　thin　films.　The　drastic,　reversible　phase　transition　of　VO2　drives　the　actuators　to　deliver　giant　amplitude,　fast　response　up　to　∼100　Hz,　and　long　lifetime　more　than　1　000　000　actuation　cycles.　The　excellent　electrical　conductivity　and　light　absorption　of　CNT　thin　films　enable　the　actuators　to　be　highly　responsive　to　multiple　stimuli　including　light,　electric,　and　heat.　The　power　consumption　of　the　actuators　can　be　much　reduced　by　doping　VO2　to　lower　its　phase　transition　temperature.　These　flexible　bimorph　actuators　find　applications　in　biomimetic　inspect　wings,　millimeter-scale　fingers,　and　physiological-temperature　driven　switches.　©　2016　American　Chemical　Society.

关键词：

Actuators Biomimetics Carbon films Carbon nanotubes Doping (additives) Flexible electronics Flexible wings Light absorption Phase transitions Semiconductor doping Thin films Vanadium dioxide

作者机构：

[ 1 ] [Ma, He]State Key Laboratory of Low-Dimensional Quantum Physics, Department of Physics, Tsinghua-Foxconn Nanotechnology Research Center, Tsinghua University, Beijing; 100084, China
[ 2 ] [Ma, He]College of Applied Sciences, Beijing University of Technology, Beijing; 100124, China
[ 3 ] [Hou, Jiwei]State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing; 100084, China
[ 4 ] [Wang, Xuewen]State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing; 100084, China
[ 5 ] [Zhang, Jin]State Key Laboratory of Low-Dimensional Quantum Physics, Department of Physics, Tsinghua-Foxconn Nanotechnology Research Center, Tsinghua University, Beijing; 100084, China
[ 6 ] [Yuan, Zhiquan]State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing; 100084, China
[ 7 ] [Xiao, Lin]Qian Xuesen Laboratory of Space Technology, China Academy of Space Technology, Beijing; 100094, China
[ 8 ] [Wei, Yang]State Key Laboratory of Low-Dimensional Quantum Physics, Department of Physics, Tsinghua-Foxconn Nanotechnology Research Center, Tsinghua University, Beijing; 100084, China
[ 9 ] [Fan, Shoushan]State Key Laboratory of Low-Dimensional Quantum Physics, Department of Physics, Tsinghua-Foxconn Nanotechnology Research Center, Tsinghua University, Beijing; 100084, China
[ 10 ] [Jiang, Kaili]State Key Laboratory of Low-Dimensional Quantum Physics, Department of Physics, Tsinghua-Foxconn Nanotechnology Research Center, Tsinghua University, Beijing; 100084, China
[ 11 ] [Liu, Kai]State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing; 100084, China

通讯作者信息：

[wei, yang]state key laboratory of low-dimensional quantum physics, department of physics, tsinghua-foxconn nanotechnology research center, tsinghua university, beijing; 100084, china

电子邮件地址：

weiyang@tsinghua.edu.cn

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