Dynamically tunable lamellar surface structures from magnetoactive elastomers driven by a uniform magnetic field

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

Stimuli responsive materials are key ingredients for any application that requires dynamically tunable or on-demand responses. In this work we report experimental and theoretical investigation of magnetic-field driven modifications of soft-magnetic elastomers whose surface was processed by laser ablation into lamellar microstructures that can be manipulated by a uniform magnetic field. We present a minimal hybrid model that elucidates the associated deflection process of the lamellae and explains the lamellar structure frustration in terms of dipolar magnetic forces arising from the neighbouring lamellae. We experimentally determine the magnitude of the deflection as a function of magnetic flux density and explore the dynamic response of lamellae to fast changes in a magnetic field. A relationship between the deflection of lamellae and modifications of the optical reflectance of the lamellar structures is resolved.

• Language: English
• Keywords: magnetoactive elastomers, laser micro-machining, lamellar structures
• Work type: Article
• Typology: 1.01 - Original Scientific Article
• Organization: FMF - Faculty of Mathematics and Physics; FS - Faculty of Mechanical Engineering
• Publication status: Published
• Publication version: Version of Record
• Year: 2023
• Number of pages: Str. 3357-3365
• Numbering: Vol. 19, iss. 18
• PID: 20.500.12556/RUL-152367
• UDC: 539.2
• ISSN on article: 1744-683X
• DOI: 10.1039/d3sm00012e
• COBISS.SI-ID: 149684995
• Publication date in RUL: 22.11.2023

Record is a part of a journal

• Title: Soft matter
• Publisher: Royal Society of Chemistry
• ISSN: 1744-683X
• COBISS.SI-ID: 19616551

Licences

• License: CC BY 3.0, Creative Commons Attribution 3.0 Unported
• Link: https://creativecommons.org/licenses/by/3.0/deed.en
• Description: You are free to reproduce and redistribute the material in any medium or format. You are free to remix, transform, and build upon the material for any purpose, even commercially. You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.

Secondary language

• Language: Slovenian
• Keywords: magnetoaktivni elastomeri, lasersko mikrostrukturiranje, lamelne strukture