期刊
APPLIED SURFACE SCIENCE
卷 384, 期 -, 页码 393-399出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apsusc.2016.05.048
关键词
Gecko; Hierarchical structures; Hydrophobic; Contact force
类别
资金
- Ministry of Science and Technology of Taiwan [MOST 103-2221-E-033 -036 -MY3]
Biomimicry refers to the imitation of mechanisms and features found in living creatures using artificial methods. This study used optical lithography, colloidal lithography, and dry etching to mimic the micro/nano hierarchical structures covering the soles of gecko feet. We measured the static contact angle and contact angle hysteresis to reveal the behavior of liquid drops on the hierarchical structures. Pulling tests were also performed to measure the resistance of movement between the hierarchical structures and a testing plate. Our results reveal that hierarchical structures at the micro-/nano-scale are considerably hydrophobic, they provide good flow characteristics, and they generate more contact force than do surfaces with micro-scale cylindrical structures. (C) 2016 Elsevier B.V. All rights reserved.
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