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Effect of leaning angle of gecko-inspired slanted polymer nanohairs on dry adhesion

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5 Author(s)
Jeong, Hoon Eui ; School of Mechanical and Aerospace Engineering, Seoul National University, Seoul 151-742, Republic of Korea ; Lee, Jin-Kwan ; Kwak, Moon Kyu ; Moon, Sang Heup
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Your organization might have access to this article on the publisher's site. To check, click on this link:http://dx.doi.org/+10.1063/1.3298554 

We present analysis of adhesion properties of angled polymer nanohairs with a wide range of leaning angles from 0° to 45° and ultraviolet (UV)-curable polyurethane acrylate (PUA) materials of two different elastic moduli (19.8 and 320 MPa). It is demonstrated that shear adhesion and adhesion hysteresis can be greatly enhanced by increasing the leaning angle of nanohairs both for soft and hard materials due to increased contact area and reduced structural stiffness.

Published in:
Applied Physics Letters  (Volume:96 ,  Issue: 4 )

Date of Publication: Jan 2010

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