American Chemical Society
am8b13111_si_002.mpg (2.3 MB)

Controlled Actuation of Liquid Marbles on a Dielectric

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posted on 2018-09-28, 00:00 authored by Xiangyu Fu, Yage Zhang, Hao Yuan, Bernard P. Binks, Ho Cheung Shum
Motivated by the great potential of droplet microreactors for chemical and biological applications, a general and robust method utilizing an electric field is developed for sustained, directional and two-dimensional manipulation of nonwetting droplets (termed “liquid marbles”). With the understanding of the mechanism of actuation, this method allows individual liquid marbles to be actuated and coalesced on demand by fine-tuning the driving voltage. Moreover, in our system, cross-contamination between marbles during manipulation is avoided as confirmed by the absence of any trace DNA after amplification using a loop-mediated isothermal amplification reaction.