Directional size-triggered microdroplet target transport on gradient-step fibers

Yan Xue, Yuan Chen, Tina Wang, Lei Jiang, Yongmei Zheng

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42 Citations (Scopus)


We present a unique method for size-triggered microdroplet target transport, achieved on gradient-step spindle-knot fibers (GSFs). GSFs are controllably fabricated by developing a velocity-change coating method, the gradient features of which can have uni-directional, middle or two-side symmetric spindle-knot modes to modulate directional droplet target transport. This finding offers an insight into how to effectively control the direction of liquid self-transport for water collection, and may also be extended to smart materials which contribute to fluid control.
Original languageEnglish
Pages (from-to)7156-7160
Number of pages5
JournalJournal of Materials Chemistry A
Issue number20
Publication statusPublished - 28 May 2014
Externally publishedYes

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