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Tunable surface roughness and wettability of a soft magnetoactive elastomer

  • Surface topographical modifications of a soft magnetoactive elastomer (MAE) in response to variable applied magnetic field are investigated. The analysis is performed in situ and is based on optical microscopy, spread optical reflection and optical profilometry measurements. Optical profilometry analysis shows that the responsivity of magnetic field-induced surface roughness with respect to external magnetic field is in the range of 1 mu m/T. A significant hysteresis of surface modifications takes place for increasing and decreasing fields. Investigations of shape of sessile water droplets deposited on the MAE surface reveal that field-induced topographical modifications affect the contact angle of water at the surface. This effect is reversible and the responsivity to magnetic field is in the range of 20 degrees/T. Despite the increased surface roughness, the apparent contact angle decreases with increasing field, which is attributed to the field-induced protrusion of hydrophilic microparticles from the surface layer.

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Metadaten
Author:Gašper GlavanORCiD, Peter SalamonORCiD, Inna A. Belyaeva, Mikhail Shamonin (Chamonine)ORCiDGND, Irena Drevensek-OlenikORCiD
DOI:https://doi.org/10.1002/app.46221
Parent Title (English):Journal of applied polymer science
Publisher:Wiley
Document Type:Article
Language:English
Year of first Publication:2018
Release Date:2022/03/29
Tag:CONTACT; EVAPORATION; FORCE; MAGNETIC-MATERIALS; STIMULI-RESPONSIVE SURFACES; hydrophobic polymers; magnetism and magnetic properties; optical properties; stimuli-sensitive polymers; structure-property relationships
Volume:135
Issue:18
Article Number:46221
Institutes:Fakultät Elektro- und Informationstechnik
Fakultät Elektro- und Informationstechnik / Labor Intelligente Materialien und Strukturen
Begutachtungsstatus:peer-reviewed
research focus:Produktion und Systeme
Licence (German):Keine Lizenz - Es gilt das deutsche Urheberrecht: § 53 UrhG