Surface modification of magnetoactive elastomers by laser micromachining

Straus, Izidor (author), Kravanja, Gaia (author), Hribar, Luka (author), Kriegl, Raphael (author), Jezeršek, Matija (author), Shamonin, Mikhail (author), Drevenšek Olenik, Irena (author), Kokot, Gašper (author)

It has been recently demonstrated that laser micromachining of magnetoactive elastomers is a very convenient method for fabricating dynamic surface microstructures with magnetically tunable properties, such as wettability and surface reflectivity. In this study, we investigate the impact of the micromachining process on the fabricated material’s structural properties and its chemical composition. By employing scanning electron microscopy, we investigate changes in size distribution and spatial arrangement of carbonyl iron microparticles dispersed in the polydimethylsiloxane (PDMS) matrix as a function of laser irradiation. Based on the images obtained by a low vacuum secondary electron detector, we analyze modifications of the surface topography. The results show that most profound modifications occur during the low-exposure (8 J/cm$^2$) treatment of the surface with the laser beam. Our findings provide important insights for developing theoretical models of functional properties of laser-sculptured microstructures from magnetoactive elastomers.

• Language: English
• Keywords: magnetoactive elastomers, laser micromachining, scanning electron microscopy
• Work type: Article
• Typology: 1.01 - Original Scientific Article
• Organization: FMF - Faculty of Mathematics and Physics
• Publication version: Version of Record
• Publication date: 28.03.2024
• Year: 2024
• Number of pages: 12 str.
• Numbering: Vol. 17, iss. 7, art. no. 1550
• PID: 20.500.12556/RUL-155471
• UDC: 620.3
• ISSN on article: 1996-1944
• DOI: 10.3390/ma17071550
• COBISS.SI-ID: 191305987
• Publication date in RUL: 03.04.2024

Record is a part of a journal

• Title: Materials
• Shortened title: Materials
• Publisher: MDPI
• ISSN: 1996-1944
• COBISS.SI-ID: 33588485

Licences

• License: CC BY 4.0, Creative Commons Attribution 4.0 International
• Link: http://creativecommons.org/licenses/by/4.0/
• Description: This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.

Secondary language

• Language: Slovenian
• Keywords: magnetoaktivni elastomeri, lasersko mikrostrukturiranje, vrstična elektronska mikroskopija