NDLI: Charge Contribution to the Adhesion Performance of Polymeric Microstructures

Content Provider	Springer Nature Link
Author	Kovalev, Alexander E. Gorb, Stanislav N.
Copyright Year	2012
Abstract	Strong attachment of many insects with microstructured attachment pads is due to the Van der Waals interactions or/and the capillary forces between the pads and substrates. To establish initial contact between two surfaces a certain normal force should be applied. The presence of the charges on surfaces could facilitate or impede the initial contact formation. In this study, forces appearing due to the contact electrification of microstructured material mimicking beetle adhesive pads were measured and their influence on the contact formation was discussed. The experiments have clearly demonstrated that static charges contribute to an initial contact establishment in materials with the mushroom-shaped microstructure, whereas Van der Waals interactions or/and capillary forces have the main contribution at pull-off. A simple model was successfully used for data analysis and extraction information about the charge distribution. The effect of the jump-in due to the electrostatic interaction has to be considered during the development of further implementation of biologically inspired microstructured adhesives.
Starting Page	103
Ending Page	109
Page Count	7
File Format	PDF
ISSN	10238883
Journal	Tribology Letters
Volume Number	48
Issue Number	1
e-ISSN	15732711
Language	English
Publisher	Springer US
Publisher Date	2012-08-12
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Elastomers Microstructure Contact electrification Insects Biologically inspired adhesives Theoretical and Applied Mechanics Tribology, Corrosion and Coatings Physical Chemistry Nanotechnology Surfaces and Interfaces, Thin Films
Content Type	Text
Resource Type	Article
Subject	Surfaces, Coatings and Films Mechanics of Materials Mechanical Engineering Surfaces and Interfaces

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