Journal
BIOMICROFLUIDICS
Volume 6, Issue 1, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3673258
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- ROC National Science Council [NSC 99-2112 -M-007-016-MY3, NSC 99-2112 -M-007-015-MY3]
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This study experimentally verifies that the mixing process in a droplet can be enhanced by driving the droplet at resonant frequencies and at alternating driving frequencies using a parallel-plate electrowetting on dielectric device. The mixing time, which is defined as the time required for reaching the well-mixed state, in a resonant droplet is found to be significantly shorter than that in a non-resonant droplet. Besides, it is also found that a higher driving potential leads to a better mixing effect, especially at resonant frequencies. Furthermore, when a droplet is driven by alternating two driving frequencies, especially two resonant frequencies, the mixing efficiency is found to be significantly enhanced for a specific alternating duration of these two frequencies. (C) 2012 American Institute of Physics. [doi:10.1063/1.3673258]
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