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Im HS, Kwon KY, Kim JU, et al. Highly durable and unidirectionally stooped polymeric nanohairs for gecko-like dry adhesive. Nanotechnology. 2015;26(41):415301doi: 10.1088/0957-4484/26/41/415301.
Im, H. S., Kwon, K. Y., Kim, J. U., Kim, K. S., Yi, H., Yoo, P. J., Pang, C., Jeong, H. E., & Kim, T. I. (2015). Highly durable and unidirectionally stooped polymeric nanohairs for gecko-like dry adhesive. Nanotechnology, 26(41), 415301. https://doi.org/10.1088/0957-4484/26/41/415301
Im, Hyeon Seong, et al. "Highly durable and unidirectionally stooped polymeric nanohairs for gecko-like dry adhesive." Nanotechnology vol. 26,41 (2015): 415301. doi: https://doi.org/10.1088/0957-4484/26/41/415301
Im HS, Kwon KY, Kim JU, Kim KS, Yi H, Yoo PJ, Pang C, Jeong HE, Kim TI. Highly durable and unidirectionally stooped polymeric nanohairs for gecko-like dry adhesive. Nanotechnology. 2015 Oct 16;26(41):415301. doi: 10.1088/0957-4484/26/41/415301. Epub 2015 Sep 22. PMID: 26391964.
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Nanotechnology. 2015 Oct 16;26(41):415301. doi: 10.1088/0957-4484/26/41/415301. Epub 2015 Sep 22.

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

Nanotechnology

Hyeon Seong Im, Ki Yoon Kwon, Jong Uk Kim, Kwang Su Kim, Hoon Yi, Pil J Yoo, Changhyun Pang, Hoon Eui Jeong, Tae-il Kim

Affiliations

  1. Center for Neuroscience Imaging Research, Institute of Basic Science (IBS), Suwon 440-746, Korea. School of Chemical Engineering, Sungkyunkwan University (SKKU), Suwon 440-746, Korea.

PMID: 26391964 DOI: 10.1088/0957-4484/26/41/415301

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 (∼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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