Electrostatic self-cleaning gecko-like adhesives

This paper describes the use of the electrostatic element of an electrostatic/gecko-like adhesive to repel dust particles, which have been shown to significantly affect adhesion and reliability. The result is a non-destructive, non-contact cleaning method that can be used in conjunction with other c...

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Bibliographic Details
Published in:Journal of the Royal Society interface 2018-04, Vol.15 (141), p.20170714-20170714
Main Authors: Alizadehyazdi, Vahid, Modabberifar, Mehdi, Mahmoudzadeh Akherat, S. M. Javid, Spenko, Matthew
Format: Article
Language:English
Subjects:
Adhesion tests
Adhesiveness
Adhesives
Adhesives - chemistry
Animals
Beads
Biomechanical Phenomena
Cleaning
Dust
Dust Mitigation
Electrostatic Force
Friction
Gecko-Like Adhesives
Geckos
Glass beads
Life Sciences–Engineering interface
Lizards
Nondestructive testing
Reproducibility of Results
Self-Cleaning
Shear stress
Static Electricity
Substrates
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Summary:This paper describes the use of the electrostatic element of an electrostatic/gecko-like adhesive to repel dust particles, which have been shown to significantly affect adhesion and reliability. The result is a non-destructive, non-contact cleaning method that can be used in conjunction with other cleaning techniques, many of which rely on physical contact between the fibrillar adhesive and substrate. The paper focuses on experimental evaluation of the repulsion of 100 μm glass beads as a function of wave shape, frequency, phase number and electrode direction in relation to the gecko-like features. Results show that a two-phase square wave with the lowest practically feasible frequency can remove 100 μm glass beads from a directional gecko-like adhesive with up to 70% efficiency. Finally, using the optimized electrostatic cleaning properties, results show an approximately 25% recovery in shear stress on a rough glass for three contaminated directional gecko-like adhesives after contact with a dusty table.
ISSN:1742-5689
1742-5662
DOI:10.1098/rsif.2017.0714