计算机科学
材料科学
微流控
纳米技术
曲面(拓扑)
作者
Xinhong Xiong,Lulu Xue,Li Yang,Shihua Dong,Jiaxi Cui
出处
期刊:Materials Chemistry Frontiers
[The Royal Society of Chemistry]
日期:2021-07-12
卷期号:5 (14): 5382-5389
摘要
On-demand manipulation of droplets on surfaces plays an important role for many applications but the fabrication of a platform capable of efficient stimuli-free pinning on any tilted surfaces without any external forces and precise motion of droplets at different states is still challenging. Herein we report a novel magnetoresponsive semi-infused adaptive surface for droplet manipulations. The responsive surface is made by semi-infusing a magnetic-responsive lubricant into a porous substrate. The topography of the surface can be reversibly switched between semi-infused and oil-accumulated states by the availability of an external magnetic field. The switching can turn droplets from a Cassiel state to a Wenzel state and the systems allow for stimuli-free pinning of droplets in a tilted state and on-demand motion of liquid droplets. This platform may have potential in the design of smart material interfaces, microfluidic devices, and chemical reactors.
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