Journal
SCIENTIFIC REPORTS
Volume 3, Issue -, Pages -Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/srep02927
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Funding
- National Research Fund for Fundamental Key Project [2013CB933000, 2010CB934700]
- National Natural Science Foundation of China [21234001]
- Doctoral Fund of Ministry of Education of China [20121102110035]
- Graduate Student Innovation Practice Foundation of Beihang University
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Issues of surfaces, e.g., inspired from beetle's back, spider silk, cactus stem, etc., become the active area of research on designing novel materials in need of human beings to acquire fresh water resource from air. However, the design of materials on surface structure is little achieved on controlling of micro-scale drop transport in a long distance. Here, we report the ability of micro-drop transport in a long distance on a bioinspired Fibers with Gradient Spindle-knots (BFGS), which are fabricated by tilt angle dip-coating method. The micro-drop of, 0.25 mu L transports in distance of similar to 5.00 mm, with velocity of 0.10-0.22 ms(-1) on BFGS. It is attributed to the multi-level cooperation of the release energy of drop coalescence along the gradient spindle-knots, in addition to capillary adhesion force and continuous difference of Laplace pressure, accordingly, water drops are driven to move fast directionally in a long distance on BFGS.
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