AI Article Synopsis
- The study investigates how a drop on a plate moves when subjected to both horizontal and vertical vibrations that are in sync.
- The drop's movement can be controlled by adjusting the amplitude and the phase difference between the vibrations, leading to a specific directed motion.
- The findings enhance understanding of wetting dynamics and open up new opportunities for precise droplet manipulation in microfluidics.
Article Abstract
We study the motion of a drop lying on a plate simultaneously submitted to horizontal and vertical harmonic vibrations. The two driving vibrations are adjusted to the same frequency, and, according to their relative amplitude and phase difference DeltaPhi, the drop experiences a controlled directed motion with a tunable velocity. We present a simple model putting in evidence the underlying mechanism leading to this ratchetlike motion of the drop. Our model includes the particular case DeltaPhi=pi corresponding to the climbing of a drop on a vertically vibrated inclined substrate, as recently observed by Brunet et al. [Phys. Rev. Lett. 99, 144501 (2007)10.1103/PhysRevLett.99.144501]. This study gives insights in the fundamental issue of wetting dynamics and offers new possibilities of controlled motion in droplet microfluidics applications.
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| http://dx.doi.org/10.1103/PhysRevLett.102.194504 | DOI Listing |
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