Unipolar stroke, electroosmotic pump carbon nanotube yarn muscles

被引：172

作者：

Chu, Hetao ^{[1
,2
]}

Hu, Xinghao ^{[1
,3
]}

Wang, Zhong ^{[1
,4
]}

Mu, Jiuke ^{[1
]}

Li, Na ^{[1
,5
]}

Zhou, Xiaoshuang ^{[6
]}

Fang, Shaoli ^{[1
]}

Haines, Carter S. ^{[1
,7
]}

Park, Jong Woo ^{[8
]}

Qin, Si ^{[9
]}

Yuan, Ningyi ^{[6
]}

Xu, Jiang ^{[3
]}

Tawfick, Sameh ^{[10
]}

Kim, Hyungjun ^{[11
,12
]}

Conlin, Patrick ^{[11
]}

Cho, Maenghyo ^{[11
,12
]}

Cho, Kyeongjae ^{[11
]}

Oh, Jiyoung ^{[1
]}

Nielsen, Steven ^{[4
]}

Alberto, Kevin A. ^{[4
]}

Razal, Joselito M. ^{[9
]}

Foroughi, Javad ^{[13
]}

Spinks, Geoffrey M. ^{[14
]}

Kim, Seon Jeong ^{[8
]}

Ding, Jianning ^{[3
,6
]}

Leng, Jinsong ^{[2
]}

Baughman, Ray H. ^{[1
]}

机构：

[1] Univ Texas Dallas, Alan G MacDiarmid NanoTech Inst, Richardson, TX 75080 USA

[2] Harbin Inst Technol HIT, Ctr Composite Mat & Struct, Harbin 150080, Peoples R China

[3] Jiangsu Univ, Inst Intelligent Flexible Mechatron, Zhenjiang 212013, Jiangsu, Peoples R China

[4] Univ Texas Dallas, Dept Chem & Biochem, Richardson, TX 75080 USA

[5] MilliporeSigma, Mat Sci, Milwaukee, WI 53209 USA

[6] Changzhou Univ, Jiangsu Collaborat Innovat Ctr Photovolta Sci & E, Changzhou 213164, Peoples R China

[7] Opus 12 Inc, Berkeley, CA 94710 USA

[8] Hanyang Univ, Ctr Self Powered Actuat, Dept Biomed Engn, Seoul 04763, South Korea

[9] Deakin Univ, Inst Frontier Mat, Waurn Ponds, Vic 3216, Australia

[10] Univ Illinois, Dept Mech Sci & Engn, Urbana, IL 61801 USA

[11] Univ Texas Dallas, Dept Mat Sci & Engn, Richardson, TX 75080 USA

[12] Seoul Natl Univ, Dept Mech & Aerosp Engn, Seoul 08826, South Korea

[13] Univ Wollongong, Fac Engn & Informat Sci, Wollongong, NSW 2500, Australia

[14] Univ Wollongong, Intelligent Polymer Res Inst, Australian Inst Innovat Mat, Wollongong, NSW 2522, Australia

来源：

SCIENCE | 2021年 / 371卷 / 6528期

基金：

澳大利亚研究理事会; 新加坡国家研究基金会;

关键词：

WATER TRANSPORT CHARACTERISTICS; DIFFERENTIAL CAPACITANCE; WORK FUNCTION; ZERO CHARGE; ION; MEMBRANES; ACTUATOR; METALS;

D O I：

10.1126/science.abc4538

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Success in making artificial muscles that are faster and more powerful and that provide larger strokes would expand their applications. Electrochemical carbon nanotube yarn muscles are of special interest because of their relatively high energy conversion efficiencies. However, they are bipolar, meaning that they do not monotonically expand or contract over the available potential range. This limits muscle stroke and work capacity. Here, we describe unipolar stroke carbon nanotube yarn muscles in which muscle stroke changes between extreme potentials are additive and muscle stroke substantially increases with increasing potential scan rate. The normal decrease in stroke with increasing scan rate is overwhelmed by a notable increase in effective ion size. Enhanced muscle strokes, contractile work-per-cycle, contractile power densities, and energy conversion efficiencies are obtained for unipolar muscles.

引用

页码：494 / +

页数：56

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