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Self-Cleaning and Controlled Adhesion of Gecko Feet and Their Bioinspired Micromanipulators

Published online by Cambridge University Press:  14 January 2018

Yiyang Wan  and
Zhenhai Xia
Yiyang Wan
Affiliation:
Department of Materials Science and Engineering, Department of Chemistry, University of North Texas, Denton, TX76203, USA.
Zhenhai Xia*
Affiliation:
Department of Materials Science and Engineering, Department of Chemistry, University of North Texas, Denton, TX76203, USA.
*
*email: Zhenhai.xia@unt.edu.
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Abstract

Bioinspired micromanipulators have been made based on gecko dynamic self-cleaning mechanism. Various particles such as spherical SiO2/polystyrene, and short fibrous glass can be captured, transmitted and dropped on glass substrate with precisely predesigned patterns, by using the micromanipulator with the help of atomic force microscope (AFM). It has been demonstrated that particle-pad interface and particle-substrate interface exhibit diverse adhesion behaviors under different z-piezo retracting speed. The particle-substrate adhesion increases faster than the particle-pad adhesion with increasing the detaching velocity, which makes it possible to manipulate the particles by adjusting the retreating speed only. Probability tests was performed to better choose suitable parameters for picking and dropping operations. This work provides a potential solution to manipulation of micro/nano particles for precise assembly.

Keywords

biomimetic (assembly)adhesivemicrostructure
Type
Articles
Information
MRS Advances , Volume 3 , Issue 29: Biomaterials and Soft Materials , 2018 , pp. 1641 - 1646
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Copyright
Copyright © Materials Research Society 2018 

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References

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