2013/10/11 by Necmettin Cevheri, Cevheri, Necmettin, Minami Yoda +1
Chemistry · Engineering · #Electrostatics and Colloid Interactions #Electrowetting and Microfluidic Technologies #FOS: Physical sciences #Fluid Dynamics (physics.flu-dyn) #Microfluidic and Bio-sensing Technologies
paper · pdf · doi:10.48550/arxiv.1310.3299
openalex publication_date 2013/10/11 · openalex created_date 2019/06/27 · openalex updated_date 2026/07/28
This fluid dynamics video, presented at the 66th Annual Meeting of the American Physical Society Division of Fluid Dynamics (Pittsburgh, PA), shows how dielectric colloidal polystyrene (PS) particles with a negative surface charge in a dilute suspension flowing through a microchannel can be manipulated and assembled into streamwise structures by using a combination of shear and an applied negative electric field along the streamwise direction. Interestingly, these structures are only observed within about 1 um of the wall, which also has a negative surface charge, and are not present in the bulk flow.