254 citations · 533 across the 10 of their papers we have counts for
10 papers
Collective Vortical Motion and Vorticity Reversals of Self-Propelled Particles on Circularly Patterned Substrates
Haosheng Wen, Yu Zhu, Chenhui Peng +2
The collective behavior of self-propelled particles (SPPs) under the combined effects of a circularly patterned substrate and circular confinement is investigated through coarse-gr…
Polar jets of swimming bacteria condensed by a patterned liquid crystal
Taras Turiv, Runa Koizumi, Kristian Thijssen +8
Active matter exhibits remarkable collective behavior in which flows, continuously generated by active particles, are intertwined with the orientational order of these particles. T…
Sorting and separation of microparticles by surface properties using liquid crystal-enabled electro-osmosis
Chenhui Peng, Taras Turiv, Yubing Guo +2
Sorting and separation of microparticles is a challenging problem of interdisciplinary nature. Existing technologies can differentiate microparticles by their bulk properties, such…
Command of active matter by topological defects and patterns
Chenhui Peng, Taras Turiv, Yubing Guo +2
Self-propelled bacteria are marvels of nature with a potential to power dynamic materials and microsystems of the future. The challenge is in commanding their chaotic behavior. By…
Controlling placement of nonspherical (boomerang) colloids in nematic cells with photopatterned director
Chenhui Peng, Taras Turiv, Rui Zhang +5
Placing colloidal particles in predesigned sites represents a major challenge of the current state-of-the-art colloidal science. Nematic liquid crystals with spatially varying dire…
Control of colloidal placement by modulated molecular orientation in nematic cells
Chenhui Peng, Taras Turiv, Yubing Guo +3
Colloids self-assemble into various organized superstructures determined by particle interactions. There is a tremendous progress in both the scientific understanding and applicati…
Liquid Crystals with Patterned Molecular Orientation as an Electrolytic Active Medium
Chenhui Peng, Yubing Guo, Christopher Conklin +4
Transport of fluids and particles at the microscale is an important theme both in fundamental and applied science. One of the most successful approaches is to use an electric field…
Chirality Amplification and Detection by Tactoids of Lyotropic Chromonic Liquid Crystals
Chenhui Peng, Oleg D. Lavrentovich
Detection of chiral molecules requires amplification of chirality to measurable levels. Typically, amplification mechanisms are considered at the microscopic scales of individual m…
Induced-charge electro-osmosis around metal and Janus spheres in water: Patterns of flow and breaking symmetries
Chenhui Peng, Israel Lazo, Sergij V. Shiyanovskii +1
We establish experimentally the flow patterns of induced-charge electro-osmosis (ICEO) around immobilized metallic spheres in aqueous electrolyte. The AC field modifies local elect…
Liquid crystal-enabled electroosmosis through spatial charge separation in distorted regions as a novel mechanism of electrokinetics
Israel Lazo, Chenhui Peng, Jie Xiang +2
Electrically-controlled dynamics of fluids and particles at microscales is a fascinating area of research with applications ranging from microfluidics and sensing to sorting of bio…