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Shaping Liquid Droplets on an Active Air-Ferrofluid Interface
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DOI：10.1021/acs.langmuir.3c00298.png)
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Abstract
En 中文
An air-liquid interface is important in many biologicaland industrial applications, where the manipulation of liquids onthe air-liquid interface can have a significant impact. However,current manipulation techniques on the interface are mostly limitedto transportation and trapping. Here, we report a magnetic liquidshaping method that can squeeze, rotate, and shape nonmagnetic liquidson an air-ferrofluid interface with programmable deformation.We can control the aspect ratio of the ellipse and generate repeatablequasi-static shapes of a hexadecane oil droplet. We can rotate dropletsand stir liquids into spiral-like structures. We can also shape phase-changingliquids and fabricate shape-programmed thin films at the air-ferrofluidinterface. The proposed method may potentially open up new possibilitiesfor film fabrication, tissue engineering, and biological experimentsthat can be carried out at an air-liquid interface.
Keywords:
MANIPULATION
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