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Shaping Liquid Droplets on an Active Air-Ferrofluid Interface.

ABSTRACT: An air-liquid interface is important in many biological and industrial applications, where the manipulation of liquids on the air-liquid interface can have a significant impact. However, current manipulation techniques on the interface are mostly limited to transportation and trapping. Here, we report a magnetic liquid shaping method that can squeeze, rotate, and shape nonmagnetic liquids on an air-ferrofluid interface with programmable deformation. We can control the aspect ratio of the ellipse and generate repeatable quasi-static shapes of a hexadecane oil droplet. We can rotate droplets and stir liquids into spiral-like structures. We can also shape phase-changing liquids and fabricate shape-programmed thin films at the air-ferrofluid interface. The proposed method may potentially open up new possibilities for film fabrication, tissue engineering, and biological experiments that can be carried out at an air-liquid interface.

SUBMITTER: Harischandra PAD

PROVIDER: S-EPMC10249407 | biostudies-literature | 2023 Jun

REPOSITORIES: biostudies-literature

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Shaping Liquid Droplets on an Active Air-Ferrofluid Interface.

Harischandra P A Diluka PAD Välisalmi Teemu T Cenev Zoran M ZM Linder Markus B MB Zhou Quan Q

Langmuir : the ACS journal of surfaces and colloids 20230524 22

An air-liquid interface is important in many biological and industrial applications, where the manipulation of liquids on the air-liquid interface can have a significant impact. However, current manipulation techniques on the interface are mostly limited to transportation and trapping. Here, we report a magnetic liquid shaping method that can squeeze, rotate, and shape nonmagnetic liquids on an air-ferrofluid interface with programmable deformation. We can control the aspect ratio of the ellipse ...[more]

PMID: 37224278

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