Tunable surface roughness and wettability of a soft magnetoactive elastomer

Gašper Glavan (Author), Peter Salamon (Author), Inna A. Belyaeva (Author), Mikhail Shamonin (Author), Irena Drevenšek Olenik (Author)

Abstract

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 µm/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°/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.

Keywords

materiali;polimeri;magnetoaktivni elastomeri;magnetne lastnosti;optične lastnosti;materials;polymers;magnetoactive elastomers;magnetic properties;optical properties;

Data

Language:	English
Year of publishing:	2018
Typology:	1.01 - Original Scientific Article
Organization:	UL FMF - Faculty of Mathematics and Physics
UDC:	537.6:620.3
COBISS:	3165284
ISSN:	0021-8995
Views:	796
Downloads:	491
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	Slovenian
Secondary keywords:	materiali;polimeri;magnetoaktivni elastomeri;magnetne lastnosti;optične lastnosti;
Embargo end date (OpenAIRE):	2019-01-30
Pages:	8 str.
Volume:	ǂVol. ǂ135
Issue:	ǂart. no. ǂ46221
Chronology:	2018
DOI:	10.1002/app.46221
ID:	10942464