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

Jeong, Hoon Eui; Lee, Jin-Kwan; Kwak, Moon Kyu; Moon, Sang Heup; Suh, Kahp Yang

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

Type

Article

Authors

Jeong, Hoon Eui
Lee, Jin-Kwan
Kwak, Moon Kyu
Moon, Sang Heup
Suh, Kahp Yang

KAUST Grant Number

KUK-F1-037-02

Online Publication Date

2010-02-01

Print Publication Date

2010-01-25

Date

2010-02-01

Abstract

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. © 2010 American Institute of Physics.

Citation

Jeong HE, Lee J-K, Kwak MK, Moon SH, Suh KY (2010) Effect of leaning angle of gecko-inspired slanted polymer nanohairs on dry adhesion. Applied Physics Letters 96: 043704. Available: http://dx.doi.org/10.1063/1.3298554.

Acknowledgements

This work was supported by the Nano R&D Program (Grant No. 2007-02605), the Center for Nanoscale Mechatronics & Manufacturing (Grant No. 08K1401-00210), and King Abdullah University of Science and Technology (KAUST) program (Grant No. KUK-F1-037-02). This work was also supported in part by the Center for Ultramicrochemical Process Systems.