Gaia Kravanja (Avtor), Raphael Kriegl (Avtor), Luka Hribar (Avtor), Gašper Glavan (Avtor), Irena Drevenšek Olenik (Avtor), Mikhail Shamonin (Avtor), Matija Jezeršek (Avtor)

Povzetek

Efficient transportation of droplets (≈10$^1$–10$^2$ μL) and small solid objects (≈10$^1$–10$^2$ mm$^3$) have important applications in many fields, such as microfluidics, lab-on-a-chip devices, drug delivery, etc. A novel multifunctional surface consisting of a periodic array of micro-lamellae from a soft magnetoactive elastomer on a plastic substrate is reported for these purposes. The physical origin of the propulsion is the bending of soft magnetic lamellae in nonuniform magnetic fields, which is also observed in uniform magnetic fields. The magnetoactive surface is fabricated using a facile and rapid method of laser ablation. The propulsion of items is realized using a four-pole rotating magnet. This results in a cyclic lamellar fringe motion over the microstructured surface and brings an advantage of easy reciprocation of transport by rotation reversal. Two modes of object transportation are identified: “pushing” mode for precise control of droplet and solid positioning and “bouncing” mode for heavier solid objects transportation. A water droplet of 5 μL or a glass sphere with a 2.1 mm diameter can be moved at a maximum speed of 60 mm s$^{–1}$. The multifunctionality of the proposed mechatronic platform is demonstrated on the examples of selective solid–liquid separation and droplet merging.

Ključne besede

magnetoaktivni elastomeri;magnetno odzivne površine;lasersko mikrostrukturiranje;transport;separacija;magnetoresponsive surfaces;laser micromachining;object transportation;object separation;magnetoactive elastomers;

Podatki

Jezik: Angleški jezik
Leto izida:
Tipologija: 1.01 - Izvirni znanstveni članek
Organizacija: UL FS - Fakulteta za strojništvo
UDK: 620.3
COBISS: 167150595 Povezava se bo odprla v novem oknu
ISSN: 1438-1656
Št. ogledov: 20
Št. prenosov: 4
Ocena: 0 (0 glasov)
Metapodatki: JSON JSON-RDF JSON-LD TURTLE N-TRIPLES XML RDFA MICRODATA DC-XML DC-RDF RDF

Ostali podatki

Sekundarni jezik: Slovenski jezik
Sekundarne ključne besede: magnetoaktivni elastomeri;magnetno odzivne površine;lasersko mikrostrukturiranje;transport;separacija;
Vrsta dela (COBISS): Članek v reviji
Strani: 11 str.
Letnik: ǂVol. ǂ25
Zvezek: ǂiss. ǂ22, art. no. 2301000
Čas izdaje: Nov. 2023
DOI: 10.1002/adem.202301000
ID: 21372096