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Laser micromachining of magnetoactive elastomers as enabling technology for magnetoresponsive surfaces
ID
Kravanja, Gaia
(
Author
),
ID
Belyaeva, Inna A.
(
Author
),
ID
Hribar, Luka
(
Author
),
ID
Drevenšek Olenik, Irena
(
Author
),
ID
Shamonin, Mikhail
(
Author
),
ID
Jezeršek, Matija
(
Author
)
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MD5: A1E302E65A70A0F67430CCF2DBC8829D
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https://onlinelibrary.wiley.com/doi/10.1002/admt.202101045
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Abstract
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.
Language:
English
Keywords:
magnetoactive elastomers
,
wettability
,
laser structuring
,
laser micromachining
,
magnetically responsive structure
,
tunable wettability
Work type:
Article
Typology:
1.01 - Original Scientific Article
Organization:
FS - Faculty of Mechanical Engineering
FMF - Faculty of Mathematics and Physics
Publication status:
Published
Publication version:
Version of Record
Year:
2022
Number of pages:
8 str.
Numbering:
Vol. 7, iss. 5, art. 2101045
PID:
20.500.12556/RUL-145561
UDC:
620.3
ISSN on article:
2365-709X
DOI:
10.1002/admt.202101045
COBISS.SI-ID:
81234691
Publication date in RUL:
21.04.2023
Views:
511
Downloads:
99
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Record is a part of a journal
Title:
Advanced materials technologies
Publisher:
Wiley
ISSN:
2365-709X
COBISS.SI-ID:
31843367
Licences
License:
CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
Link:
http://creativecommons.org/licenses/by-nc-nd/4.0/
Description:
The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.
Secondary language
Language:
Slovenian
Keywords:
magnetoaktivni elastomeri
,
omočljivost
,
lasersko strukturiranje
Projects
Funder:
ARRS - Slovenian Research Agency
Project number:
BI-DE/20-21-11
Name:
Smart magneto-sensitive coatings for controllable droplet splashing
Funder:
Other - Other funder or multiple funders
Funding programme:
German Academic Exchange Service
Project number:
57513473
Name:
Smart magneto-sensitive coatings for controllable droplet splashing
Funder:
ARRS - Slovenian Research Agency
Project number:
P1-0192
Name:
Svetloba in snov
Funder:
ARRS - Slovenian Research Agency
Project number:
P2-0392
Name:
Optodinamika
Funder:
Other - Other funder or multiple funders
Funding programme:
The State Conference of Women and Equality Officers at Bavarian Universities (LaKoF Bavaria), Ph.D. scholarship
Funder:
Other - Other funder or multiple funders
Funding programme:
Deutsche Forschungsgemeinschaft
Project number:
437391117
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