Highly durable and unidirectionally stooped polymeric nanohairs for gecko-like dry adhesive.

Citation data:

Nanotechnology, ISSN: 1361-6528, Vol: 26, Issue: 41, Page: 415301

Publication Year:
2015
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Repository URL:
http://scholarworks.unist.ac.kr/handle/201301/17823
PMID:
26391964
DOI:
10.1088/0957-4484/26/41/415301
Author(s):
Im, Hyeon Seong, Kwon, Ki Yoon, Kim, Jong Uk, Kim, Kwang Su, Yi, Hoon, Yoo, Pil J., Pang, Changhyun, Jeong, Hoon Eui, Kim, Tae-il
Publisher(s):
IOP Publishing, IOP PUBLISHING LTD
Tags:
Chemical Engineering, Chemistry, Materials Science, Engineering, gecko, dry adhesive, durability, stooped nanohair
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article description
Gecko-like dry adhesive using high aspect ratio polymeric nanohairs has insuperable limitations, although it has huge potential in many applications. Repeated harsh contacts on a target substrate lead to physical collapse of nanohairs and significant degradation of the adhesion property, because the polymeric nanohairs are quite fragile due to poor mechanical robustness. Herein, we demonstrate a highly robust gecko-like dry adhesive with unidirectionally stooped polymeric nanohairs (diameter 100 nm) with a high aspect ratio (∼9) using an ultrathin metal coating. 100 cycles of repeated adhesion tests with 1 N preloading force did not significantly degrade adhesion or cause collapse of nanohairs. We believe that this approach allows gecko-like dry adhesive to be utilized in many related applications and diverse industry interests.

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