Superhydrophobic pillar-structured surfaces can generate direction-controlled liquid bridge arrays when placing an aqueous droplet upon the surfaces. Following the inward shrinkage of three phase contact line of droplet, strictly oriented liquid bridges have been generated connecting neighbouring micropillars. These well-define 1D liquid bridges might restrict the alignment of inner guests (building blocks) after water evaporation. Small molecule could be used to fabricate nanowires and crystal nanowires. Water-soluble polymer and water-insoluble polymer nanowires could be aligned. Besides, silver NPs or microspheres can be patterned. Furthermore, the micropillars can also control the super spreading and dewetting of organic liquid, yielding highly aligned, precisely positioned and geometrically tunable organic-semiconductor single-crystal arrays. All these studies will boost the development of 1D nano/micro-structures of organic semiconductor material for potential application in optic/electronic nanodevices.

Super-wettability based fabrication of organic functional materials

253rd National Meeting (2017)

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