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Active Manipulation of Functional Droplets on Slippery Surface

机译:Active Manipulation of Functional Droplets on Slippery Surface

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摘要

Droplet manipulation has drawn enormous attention due to its important role in technological applications from energy and environment to human health. However, the facilely active manipulation of functional droplets on a nonresponsive slippery surface remains a great challenge. Here, triggered by external stimuli (light irradiation, electric field, and magnetic field), an active manipulation of functional droplets is reported, that is propelling the droplets on a nonresponsive slippery surface, without the need fosurface responsiveness. The driven forces are the asymmetrical forces induced by external stimuli. Moreover, the proof-of-concept experiments of the coalescence, micro reaction, anti-gravity force manipulation, and screening of different droplets under external stimuli are demonstrated. All the results indicate that this work can offer a feasible strategy for actively manipulating droplets independent of surface responsiveness and facilitate the development of chemical detection, microfluidics, bioanalysis, and medicines.

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