The giant electrorheological effect in suspensions of nanoparticles

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	The giant electrorheological effect in suspensions of nanoparticles
	Wen, WJ ; Huang, XX ; Yang, SH ; Lu, KQ ; Sheng, P
刊名	NATURE MATERIALS
	2003
卷号	2 期号:11 页码:727
关键词	HYDROTHERMAL SYNTHESIS ELECTRICAL CONDUCTION METAL FILMS FLUIDS MECHANISM POWDERS
ISSN号	1476-1122
通讯作者	Sheng, P (reprint author), Hong Kong Univ Sci & Technol, Dept Phys, Clear Water Bay, Kowloon, Hong Kong, Peoples R China.
中文摘要	Electrorheology (ER) denotes the control of a material's flow properties (rheology) through an electric field(1-10). We have fabricated electrorheological suspensions of coated nanoparticles that show electrically controllable liquid-solid transitions. The solid state can reach a yield strength of 130 kPa, breaking the theoretical upper bound on conventional ER static yield stress that is derived on the general assumption that the dielectric and conductive responses of the component materials are linear. In this giant electrorheological (GER) effect, the static yield stress displays near-linear dependence on the electric field, in contrast to the quadratic variation usually observed(11-16). Our GER suspensions show low current density over a wide temperature range of 10-120degreesC, with a reversible response time of <10 ms. Finite-element simulations, based on the model of saturation surface polarization in the contact regions of neighbouring particles, yield predictions in excellent agreement with experiment.
收录类别	SCI
语种	英语
公开日期	2013-09-23
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/45175]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Wen, WJ,Huang, XX,Yang, SH,et al. The giant electrorheological effect in suspensions of nanoparticles[J]. NATURE MATERIALS,2003,2(11):727.
APA	Wen, WJ,Huang, XX,Yang, SH,Lu, KQ,&Sheng, P.(2003).The giant electrorheological effect in suspensions of nanoparticles.NATURE MATERIALS,2(11),727.
MLA	Wen, WJ,et al."The giant electrorheological effect in suspensions of nanoparticles".NATURE MATERIALS 2.11(2003):727.