Reconfigurable surface micropatterns based on the magnetic field-induced shape memory effect in magnetoactive elastomers

Lovšin, Matija (avtor), Brandl, Dominik (avtor), Glavan, Gašper (avtor), Belyaeva, Inna A. (avtor), Cmok, Luka (avtor), Čoga, Lucija (avtor), Kalin, Mitjan (avtor), Shamonin, Mikhail (avtor), Drevenšek Olenik, Irena (avtor)

A surface relief grating with a period of 30 µm is embossed onto the surface of magnetoactive elastomer (MAE) samples in the presence of a moderate magnetic field of about 180 mT. The grating, which is represented as a set of parallel stripes with two different amplitude reflectivity coefficients, is detected via diffraction of a laser beam in the reflection configuration. Due to the magnetic-field-induced plasticity effect, the grating persists on the MAE surface for at least 90 h if the magnetic field remains present. When the magnetic field is removed, the diffraction efficiency vanishes in a few minutes. The described effect is much more pronounced in MAE samples with larger content of iron filler (80 wt%) than in the samples with lower content of iron filler (70 wt%). A simple theoretical model is proposed to describe the observed dependence of the diffraction efficiency on the applied magnetic field. Possible applications of MAEs as magnetically reconfigurable diffractive optical elements are discussed. It is proposed that the described experimental method can be used as a convenient tool for investigations of the dynamics of magnetically induced plasticity of MAEs on the micrometer scale.

• Jezik: Angleški jezik
• Ključne besede: magnetoactive elastomers, microstructuring, optical diffraction, shape memory effect, surface microstructuring
• 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: 2021
• Št. strani: 13 str.
• Številčenje: Vol. 13, iss. 24, art. 4422
• PID: 20.500.12556/RUL-136939
• UDK: 539.211
• ISSN pri članku: 2073-4360
• DOI: 10.3390/polym13244422
• COBISS.SI-ID: 90149123
• Datum objave v RUL: 25.05.2022

Gradivo je del revije

• Naslov: Polymers
• Skrajšan naslov: Polymers
• Založnik: MDPI
• ISSN: 2073-4360
• COBISS.SI-ID: 517951257

Licence

• Licenca: CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by/4.0/deed.sl
• Opis: To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.
• Začetek licenciranja: 16.12.2021

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: magnetoaktivni elastomeri, mikrostrukturiranje, uklon svetlobe, oblikovni spomin