20.500.12556/RUL-124527 Anisotropic electrostatic screening of charged colloids in nematic solvents The physical behavior of anisotropic charged colloids is determined by their material dielectric anisotropy, affecting colloidal self-assembly, biological function, and even out-of-equilibrium behavior. However, little is known about anisotropic electrostatic screening, which underlies all electrostatic effective interactions in such soft or biological materials. In this work, we demonstrate anisotropic electrostatic screening for charged colloidal particles in a nematic electrolyte. We show that material anisotropy behaves markedly different from particle anisotropy. The electrostatic potential and pair interactions decay with an anisotropic Debye screening length, contrasting the constant screening length for isotropic electrolytes. Charged dumpling-shaped near-spherical colloidal particles in a nematic medium are used as an experimental model system to explore the effects of anisotropic screening, demonstrating competing anisotropic elastic and electrostatic effective pair interactions for colloidal surface charges tunable from neutral to high, yielding particle-separated metastable states. Generally, our work contributes to the understanding of electrostatic screening in nematic anisotropic media. electrostatics nematic electrolytes colloids soft matter physics elektrostatika nematski elektroliti koloidi fizika mehke snovi true false false Angleški jezik Slovenski jezik Neznano 2021-01-29 08:25:20 2021-01-29 08:25:20 2022-09-04 03:59:58 0000-00-00 00:00:00 2021 0 0 12 str. art. no. eabd0662 Vol. 7 Jan. 2021 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 537.2 2375-2548 10.1126/sciadv.abd0662 49147651 523392025 RAZ_Everts_Jeffrey_Christopher_2021.pdf RAZ_Everts_Jeffrey_Christopher_2021.pdf 1 9809A1254C9DEFCAA9E413C7DAA15F01 1b4f81ff8d526d741a6d16ce0e6789766b7241f6b58c6c20b69c2cd6bbe2b64e 93039c3e-a1bb-11eb-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=140045 https://advances.sciencemag.org/content/7/5/eabd0662 1 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=141301 Fakulteta za matematiko in fiziko 0 0 0