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doi:10.22028/D291-31457
Title: | Enhancing Dry Adhesion of Polymeric Micropatterns by Electric Fields |
Author(s): | Chopra, Vaishali Chudak, Maciej Hensel, René Darhuber, Anton A. Arzt, Eduard |
Language: | English |
Title: | ACS applied materials & interfaces |
Volume: | 12 |
Issue: | 24 |
Startpage: | 27708 |
Endpage: | 27716 |
Publisher/Platform: | ACS |
Year of Publication: | 2020 |
Publikation type: | Journal Article |
Abstract: | Micropatterned dry adhesives rely mainly on van der Waals interactions. In this paper, we explore the adhesion strength increase that can be achieved by superimposing an electrostatic field through interdigitated subsurface electrodes. Micropatterns were produced by replica molding in silicone. The adhesion forces were characterized systematically by means of experiments and numerical modeling. The force increased with the square of the applied voltage for electric fields up to 800 V. For larger fields, a less-than-quadratic scaling was observed, which is likely due to the small, field-dependent electrical conductivity of the materials involved. The additional adhesion force was found to be up to twice of the field-free adhesion. The results suggest an alternative method for the controlled handling of fragile or miniaturized objects. |
DOI of the first publication: | 10.1021/acsami.0c05077 |
URL of the first publication: | https://pubs.acs.org/doi/abs/10.1021/acsami.0c05077 |
Link to this record: | hdl:20.500.11880/29420 http://dx.doi.org/10.22028/D291-31457 |
ISSN: | 1944-8252 1944-8244 |
Date of registration: | 14-Jul-2020 |
Faculty: | NT - Naturwissenschaftlich- Technische Fakultät |
Department: | NT - Materialwissenschaft und Werkstofftechnik |
Professorship: | NT - Prof. Dr. Eduard Arzt |
Collections: | SciDok - Der Wissenschaftsserver der Universität des Saarlandes |
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