Overtwisted, Resolvable Carbon Nanotube Yarn Entanglement as Strain   Sensors and Rotational Actuators

doi:10.1021/nn403400c

CORC > 北京大学 > 工学院

	Overtwisted, Resolvable Carbon Nanotube Yarn Entanglement as Strain Sensors and Rotational Actuators
	Li, Yibin ; Shang, Yuanyuan ; He, Xiaodong ; Peng, Qingyu ; Du, Shanyi ; Shi, Enzheng ; Wu, Shiting ; Li, Zhen ; Li, Peixu ; Cao, Anyuan
刊名	acs nano
	2013
关键词	carbon nanotube yarn entanglement twist stain sensor rotational actuator FIBER SOLAR-CELLS CONDUCTIVITY MUSCLES WIRE
DOI	10.1021/nn403400c
英文摘要	Introducing twists into carbon nanotube yarns could produce hierarchical architectures and extend their application areas. Here, we utilized such twists to produce elastic strain sensors over large strain (up to 500%) and rotation actuators with high energy density. We show that a helical nanotube yarn can be overtwisted into highly entangled, macroscopically random but locally organized structures, consisting of mostly double-helix segments intertwined together. Pulling the yarn ends completely resolved the entanglement in an elastic and reversible way, yielding large tensile strains with linear change in electrical resistance. Resolving an entangled yarn and releasing its twists could simultaneously rotate a heavy object (30 000 times the yarn weight) for more than 1000 cycles at high speed. The rotational actuation generated from a single entangled yarn produced energy densities up to 8.3 kJ/kg, and maintained similar capacity during repeated use. Our entangled CNT yarns represent a complex self-assembled system with applications as large-range strain sensors and robust rotational actuators.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000330016900074&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; SCI(E); EI; 16; ARTICLE; 9; 8128-8135; 7
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/154420]
专题	工学院
推荐引用方式 GB/T 7714	Li, Yibin,Shang, Yuanyuan,He, Xiaodong,et al. Overtwisted, Resolvable Carbon Nanotube Yarn Entanglement as Strain Sensors and Rotational Actuators[J]. acs nano,2013.
APA	Li, Yibin.,Shang, Yuanyuan.,He, Xiaodong.,Peng, Qingyu.,Du, Shanyi.,...&Cao, Anyuan.(2013).Overtwisted, Resolvable Carbon Nanotube Yarn Entanglement as Strain Sensors and Rotational Actuators.acs nano.
MLA	Li, Yibin,et al."Overtwisted, Resolvable Carbon Nanotube Yarn Entanglement as Strain Sensors and Rotational Actuators".acs nano (2013).