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physics.flu-dyn2020
Observation of contact angle hysteresis due to inhomogeneous electric fields
Wei Wang, Qi Wang, Jia Zhou +1
Static contact angle hysteresis (CAH) is widely attributed to surface roughness and chemical contamination. In the latter case, chemical defects create free-energy barriers that pr…
physics.flu-dyn2019
On-demand contact line pinning during droplet evaporation
Wei Wang, Qi Wang, Kaidi Zhang +3
Depending on the contact line motion, colloid-rich drolets evaporation can leave a ring-like or a spot-like residue. Herein, we determine this outcome by controlling the contact li…
physics.flu-dyn2019
Trajectory of particles exposed to a tilted-angle washboard potential: application to high-throughput acoustophoresis in microchannels
Wei Wang, Jia Zhou, Antoine Riaud
A wide variety of tilted washboard potentials based on acoustic waves, electric fields, optical patterns and so on have been applied to sort particles in microchannels. In this pap…