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Jeong, Hoon Eui
Multiscale Biomimetics & Manufacturing Lab
Research Interests
  • Biomimetics

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

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Title
Highly durable and unidirectionally stooped polymeric nanohairs for gecko-like dry adhesive
Author
Im, Hyeon SeongKwon, Ki YoonKim, Jong UkKim, Kwang SuYi, HoonYoo, Pil J.Pang, ChanghyunJeong, Hoon EuiKim, Tae-il
Keywords
gecko; dry adhesive; durability; stooped nanohair
Issue Date
201510
Publisher
IOP PUBLISHING LTD
Citation
NANOTECHNOLOGY, v.26, no.41, pp.415301 -
Abstract
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 (similar to 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
URI
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DOI
http://dx.doi.org/10.1088/0957-4484/26/41/415301
ISSN
0957-4484
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