Photocontrol of fluid slugs in liquid crystal polymer microactuators

doi:10.1038/nature19344

CORC > 北京大学 > 化学与分子工程学院

	Photocontrol of fluid slugs in liquid crystal polymer microactuators
	Lv, Jiu-An ; Liu, Yuyun ; Wei, Jia ; Chen, Erqiang ; Qin, Lang ; Yu, Yanlei
刊名	NATURE
	2016
关键词	CHEMICAL-SYNTHESIS LIGHT SURFACE DRIVEN MICROFLUIDICS TRANSPORT ACTUATORS NETWORKS DROPLET MOTION
DOI	10.1038/nature19344
英文摘要	The manipulation of small amounts of liquids has applications ranging from biomedical devices to liquid transfer. Direct light-driven manipulation of liquids, especially when triggered by light-induced capillary forces, is of particular interest because light can provide contactless spatial and temporal control. However, existing light-driven technologies suffer from an inherent limitation in that liquid motion is strongly resisted by the effect of contact-line pinning. Here we report a strategy to manipulate fluid slugs by photo-induced asymmetric deformation of tubular microactuators, which induces capillary forces for liquid propulsion. Microactuators with various shapes (straight, 'Y'-shaped, serpentine and helical) are fabricated from a mechanically robust linear liquid crystal polymer. These microactuators are able to exert photocontrol of a wide diversity of liquids over a long distance with controllable velocity and direction, and hence to mix multiphase liquids, to combine liquids and even to make liquids run uphill. We anticipate that this photodeformable microactuator will find use in micro-reactors, in laboratory-on-a-chip settings and in micro-optomechanical systems.; National Natural Science Foundation of China [51225304, 21134003, 21273048]; Shanghai Outstanding Academic Leaders Plan [15XD1500600]; SCI(E); PubMed; ARTICLE; ylyu@fudan.edu.cn; 7619; 179-+; 537
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/447991]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Lv, Jiu-An,Liu, Yuyun,Wei, Jia,et al. Photocontrol of fluid slugs in liquid crystal polymer microactuators[J]. NATURE,2016.
APA	Lv, Jiu-An,Liu, Yuyun,Wei, Jia,Chen, Erqiang,Qin, Lang,&Yu, Yanlei.(2016).Photocontrol of fluid slugs in liquid crystal polymer microactuators.NATURE.
MLA	Lv, Jiu-An,et al."Photocontrol of fluid slugs in liquid crystal polymer microactuators".NATURE (2016).