Gaia Kravanja (Author), Inna A. Belyaeva (Author), Luka Hribar (Author), Irena Drevenšek Olenik (Author), Mikhail Shamonin (Author), Matija Jezeršek (Author)

Abstract

A simple method for structuring of the surface of a magnetoactive elastomer (MAE) on the tens of micrometers scale, which capabilities extend beyond conventional mold-based polymer casting, is reported. The method relies on the ablation of the material by absorption of nanosecond infrared pulses from a commercial laser. It is shown that it is possible to fabricate parallel lamellar structures with a high aspect ratio (up to 6:1) as well as structures with complex scanning trajectories. The method is fast (fabrication time for the 7 × 7 mm$^2$ is about 60 s), and the results are highly reproducible. To illustrate the capabilities of the fabrication method, both orthogonal to the MAE surface and tilted lamellar structures are fabricated. These magnetosensitive lamellae can be easily bent by ±45° using an external magnetic field of about 230 mT. It is demonstrated that this bending allows one to control the sliding angle of water droplets in a great range between a sticky (>90°) and a sliding state (<20°). Perspectives on employing this fabrication technology for magnetosensitive smart surfaces in microfluidic devices and soft robotics are discussed.

Keywords

magnetoaktivni elastomeri;omočljivost;lasersko strukturiranje;magnetoactive elastomers;wettability;laser structuring;

Data

Language: English
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: UL FS - Faculty of Mechanical Engineering
UDC: 620.3
COBISS: 81234691 Link will open in a new window
ISSN: 2365-709X
Views: 19
Downloads: 4
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Other data

Secondary language: Slovenian
Secondary keywords: magnetoaktivni elastomeri;omočljivost;lasersko strukturiranje;
Type (COBISS): Article
Pages: 8 str.
Volume: ǂVol. ǂ7
Issue: ǂart. no. ǂ2101045
Chronology: May 2022
DOI: 10.1002/admt.202101045
ID: 18670123