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Smart Liquid Transport on Dual Biomimetic Surface via Temperature Fluctuation Control
Author(s) -
Li Chuxin,
Yu Cunlong,
Hao Dezhao,
Wu Lei,
Dong Zhichao,
Jiang Lei
Publication year - 2018
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.201707490
Subject(s) - materials science , microfluidics , beak , nanotechnology , drop (telecommunication) , surface (topology) , computer science , geometry , mathematics , paleontology , telecommunications , biology
Microdevices that manipulate fluids to transport in a predefined direction and to switch flow directions under temperature stimuli are fundamental to the intelligent control of biomedical devices, thermal managements, lab‐on‐a‐chip, etc. Despite current advances in controlling drop transport, the amplitude of liquid motion is still limited with a low speed, and the flow direction is not well controlled because of the pinning of contact lines on surface defects. Learning from nature, here, two bioinspired principles derived from the peristome surface of the pitcher plant and the beak of the shorebird are fused into a composite, and a peristome–beak mimetic surface is fabricated with flow direction switching between uni‐ and bidirections under temperature fluctuations. Significantly, deposited water can intelligently find the transport path by itself on temperature‐patterned surface. This smart peristome–beak mimetic surface would extend the bioinspired design with multi‐integrations and find use in medical, microfluidic, and heat‐transfer systems.