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10 papers · 2 filters
Nanosecond electro-optics of nematic liquid crystal with negative dielectric anisotropy
Volodymyr Borshch, Sergij V. Shiyanovskii, Bing-Xiang Li +1
We study a nanosecond electro-optic response of a nematic liquid crystal in a geometry where an applied electric field modifies the tensor order parameter but does not…
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…
Brownian Motion of Arbitrarily Shaped Particles in Two-Dimensions
Ayan Chakrabarty, Andrew Konya, Feng Wang +3
Here we implement microfabricated boomerang particles with unequal arm lengths as a model for non-symmetry particles and study their Brownian motion in a quasi-two dimensional geom…
Ionic content dependence of viscoelasticity of lyotropic chromonic liquid crystal sunset yellow
Shuang Zhou, Adam J. Cervenka, Oleg D. Lavrentovich
A lyotropic chromonic liquid crystal (LCLC) is an orientationally ordered system made by self-assembled aggregates of charged organic molecules in water, bound by weak non-covalent…
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…
Twist-bend nematic liquid crystals in high magnetic fields
P. K. Challa, V. Borshch, O. Parri +5
We present magneto-optic measurements on two materials that form the recently discovered twist-bend nematic (Ntb) phase. This intriguing state of matter represents a new fluid phas…