Laser micromachining of magnetoactive elastomers as enabling technology for magnetoresponsive surfaces

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

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.

• Jezik: Angleški jezik
• Ključne besede: magnetoactive elastomers, wettability, laser structuring, laser micromachining, magnetically responsive structure, tunable wettability
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FS - Fakulteta za strojništvo ; FMF - Fakulteta za matematiko in fiziko
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2022
• Št. strani: 8 str.
• Številčenje: Vol. 7, iss. 5, art. 2101045
• PID: 20.500.12556/RUL-145561
• UDK: 620.3
• ISSN pri članku: 2365-709X
• DOI: 10.1002/admt.202101045
• COBISS.SI-ID: 81234691
• Datum objave v RUL: 21.04.2023

Gradivo je del revije

• Naslov: Advanced materials technologies
• Založnik: Wiley
• ISSN: 2365-709X
• COBISS.SI-ID: 31843367

Licence

• Licenca: CC BY-NC-ND 4.0, Creative Commons Priznanje avtorstva-Nekomercialno-Brez predelav 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by-nc-nd/4.0/deed.sl
• Opis: Najbolj omejujoča licenca Creative Commons. Uporabniki lahko prenesejo in delijo delo v nekomercialne namene in ga ne smejo uporabiti za nobene druge namene.

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: magnetoaktivni elastomeri, omočljivost, lasersko strukturiranje