20.500.12556/RUL-145561 Laser micromachining of magnetoactive elastomers as enabling technology for magnetoresponsive surfaces 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. magnetoactive elastomers wettability laser structuring laser micromachining magnetically responsive structure tunable wettability magnetoaktivni elastomeri omočljivost lasersko strukturiranje true false true Angleški jezik Slovenski jezik Članek v reviji 2023-04-21 15:19:57 2023-04-21 15:19:59 2023-04-22 03:36:33 0000-00-00 00:00:00 2022 0 0 8 str. iss. 5, art. 2101045 Vol. 7 May 2022 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 620.3 2365-709X 10.1002/admt.202101045 81234691 Adv_Materials_Technologies_-_2021_-_Kravanja_-_Laser_Micromachining_of_.pdf Adv_Materials_Technologies_-_2021_-_Kravanja_-_Laser_Micromachining_of_.pdf 1 A1E302E65A70A0F67430CCF2DBC8829D 9e17ed21d2507fe8798c0f3bacd03b46e86796c2ca52e933e50918179f81210e 2b90bfbd-e047-11ed-a314-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=168475 https://onlinelibrary.wiley.com/doi/10.1002/admt.202101045 1 0a81bbbd-e047-11ed-a314-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=168474 Fakulteta za strojništvo Fakulteta za matematiko in fiziko 0 0 0