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题名: Fast Responsive and Controllable Liquid Transport on a Magnetic Fluid/Nanoarray Composite Interface
作者: Tian, Dongliang1, 4, 5; Zhang, Na1; Zheng, Xi1; Hou, Guanglei1; Tian, Ye2; Du, Yi4, 5; Jiang, Lei1, 3, 5; Dou, Shi Xue4, 5
关键词: fast responsive ; liquid transport ; magnetic fluid ; nanoarray ; composite interface
刊名: ACS NANO
发表日期: 2016-06-01
卷: 10, 期:6, 页:6220-6226
收录类别: SCI
英文摘要: Controllable liquid transport on surface is expected to occur by manipulating the gradient of surface tension/Laplace pressure and external stimuli, which has been intensively studied on solid or liquid interface. However, it still faces challenges of slow response rate, and uncontrollable transport speed and direction. Here, we demonstrate fast responsive and controllable liquid transport on a smart magnetic fluid/nanoarray interface, i.e., a composite interface, via modulation of an external magnetic field. The wettability of the composite interface to water instantaneously responds to gradient magnetic field due to the magnetically driven composite interface gradient roughness transition that takes place within a millisecond, which is at least 1 order of magnitude faster than that of other responsive surfaces. A water droplet can follow the motion of the gradient composite interface structure as it responds to the gradient magnetic field motion. Moreover, the water droplet transport direction can be controlled by modulating the motion direction of the gradient magnetic field. The composite interface can be used as a pump for the transport of immiscible liquids and other objects in the microchannel, which suggests a way to design smart interface materials and microfluidic devices.
语种: 英语
内容类型: 期刊论文
URI标识: http://ir.iccas.ac.cn/handle/121111/35548
Appears in Collections:有机固体实验室_期刊论文

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作者单位: 1.Beihang Univ, Sch Chem & Environm,Minist Educ, Beijing Key Lab Bioinspired Energy Mat & Devices, Key Lab Bioinspired Smart Interfacial Sci & Techn, Beijing 100191, Peoples R China
2.Chinese Acad Sci, Inst Chem, Key Lab Green Printing, BNLMS, Beijing 100190, Peoples R China
3.Chinese Acad Sci, Tech Inst Phys & Chem, Lab Bioinspired Smart Interfacial Sci, Beijing 100190, Peoples R China
4.Univ Wollongong, Australian Inst Innovat Mat, Inst Superconducting & Elect Mat, Innovat Campus, North Wollongong, NSW 2500, Australia
5.Univ Wollongong, UOW BUAA Joint Res Ctr, North Wollongong, NSW 2500, Australia
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