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Article

Charge-, salt- and flexoelectricity-driven anchoring effects in nematics

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Pages 423-435 | Received 30 Apr 2020, Accepted 18 Jun 2020, Published online: 07 Jul 2020

References

  • Jerome B. Surface effects and anchoring in liquid crystals. Rep Prog Phys. 1991 Mar;54(3):391–451.
  • De Gennes PG, Prost J. The physics of liquid crystals. Vol. 83.  Oxford: Oxford University Press; 1993.
  • Stark H. Physics of colloidal dispersions in nematic liquid crystals. Phys Rep. 2001;351(6):387–474.
  • Crawford GP, Ondris-Crawford R, Žumer S, et al. Anchoring and orientational wetting transitions of confined. Phys Rev Lett. 1993 Mar;70:1838–1841.
  • Fournier J-B, Galatola P. Modeling planar degenerate wetting and anchoring in nematic liquid crystals. Europhys Lett. 2005;72(3):403–409.
  • Patel J, Yokoyama H. Continuous anchoring transition in liquid crystals. Nature. 1993;362(6420):525.
  • Jagemalm P, Komitov L. Temperature induced anchoring transition in nematic liquid crystals with two-fold degenerate alignment. Liq Crys. 1997;23(1):1–8.
  • McCamley MK, Crawford GP, Ravnik M, et al. Optical detection of anchoring at free and fluid surfaces using a nematic liquid crystal sensor. App Phys Lett. 2007;91(14):141916.
  • Poulin P, Weitz DA. Inverted and multiple nematic emulsions. Phys Rev E. 1998 Jan;57:626–637.
  • Batista VMO, Blow ML, Telo da Gama MM. The effect of anchoring on the nematic flow in channels. Soft Matter. 2015;11:4674–4685.
  • Wu KT, Hishamunda JB, Chen DTN, et al. Transition from turbulent to coherent flows in confined three-dimensional active fluids. Science. 2017;355:6331.
  • Duclos G, Blanch-Mercader C, Yashunsky V, et al. Spontaneous shear flow in confined cellular nematics. Nat Phys. 2018;14(7):728–732.
  • Sawada A, Tarumi K, Naemura S. Effects of electric double layer and space charge polarization by plural kinds of ions on complex dielectric constant of liquid crystal materials. Jpn J Appl Phys. 1999 Mar;38(Part 1, No. 3A):1418–1422.
  • Meyer RB. Piezoelectric effects in liquid crystals. Phys Rev Lett. 1969 May;22:918–921.
  • Thurston RN. Equilibrium distributions of electric field in a cell with adsorbed charge at the surfaces. J Appl Phys. 1984;55(12):4154–4161.
  • Mundoor H, Senyuk B, Almansouri M, et al. Electrostatically controlled surface boundary conditions in nematic liquid crystals and colloids. Sci Adv. 2019;5(9):eaax4257.
  • Mundoor H, Senyuk B, Smalyukh II. Triclinic nematic colloidal crystals from competing elastic and electrostatic interactions. Science. 2016;352(6281):69–73.
  • Mukherjee PK, Lagerwall JPF, Giesselmann F. Electrolyte effects on the nematic–isotropic phase transition in lyotropic liquid crystals. Liq Cryst. 2005;32(10):1301–1306.
  • Poddar A, Dhar J, Chakraborty S. Electro-osmosis of nematic liquid crystals under weak anchoring and second order surface effects. Phys Rev E. 2017 July;96:013114.
  • Alexander GP, Yeomans JM. Flexoelectric blue phases. Phys Rev Lett. 2007 Aug;99:067801.
  • Castles F, Morris SM, Terentjev EM, et al. Thermodynamically stable blue phases. Phys Rev Lett. 2010 Apr;104:157801.
  • Barbero G, Durand G. On the validity of the rapini- papoular surface anchoring energy form in nematic liquid crystals. J Phys France. 1986;47(12):2129–2134.
  • Barbero G, Skačej G, Alexe-Ionescu AL, et al. Nematic ordering in a cell with modulated surface anchoring: effects of flexoelectricity. Phys Rev E. 1999 July;60:628–637.
  • Liu HH, Zhang YJ, Yue HR, et al. Influence of flexoelectric effect on director alignment of nematic liquid crystals in axial arrangement cylindrical cells. Chin Phys Lett. 2018 Feb;35(2):026103.
  • Tatarkova SA, Burnham DR, Kirby AK, et al. Colloidal interactions and transport in nematic liquid crystals. Phys Rev Lett. 2007;98. DOI:https://doi.org/10.1103/PhysRevLett.98.157801
  • Wiant D, Gleeson JT, Éber N, et al. Nonstandard electroconvection in a bent-core nematic liquid crystal. Phys Rev E. 2005 Oct;72:041712.
  • Pieranski P, Godinho MH. Electro-osmosis and flexoelectricity in the dowser texture. Eur Phys J E. 2019;42(6):69.
  • Alexe-Ionescu AL, Barbero G, Petrov AG. Gradient flexoelectric effect and thickness dependence of anchoring energy. Phys Rev E. 1993 Sept;48:R1631–R1634.
  • Nazarenko VG, Lavrentovich OD. Anchoring transition in a nematic liquid crystal composed of centrosymmetric molecules. Phys Rev E. 1994 Feb;49:R990–R993.
  • Nazarenko VG, Pergamenshchik VM, Koval’chuk OV, et al. Non-debye screening of a surface charge and a bulk-ion-controlled anchoring transition in a nematic liquid crystal. Phys Rev E. 1999 Nov;60:5580–5583.
  • Meister R, Jérôme B. Influence of a surface electric field on the anchoring characteristics of nematic phases at rubbed polyimides. J Appl Phys. 1999;86(5):2473–2478.
  • Kühnau U, Petrov AG, Klose G, et al. Measurements of anchoring energy of a nematic liquid crystal, 4- cyano-4ʹ− n-pentylbiphenyl, on Langmuir-Blodgett films of dipalmitoyl phosphatidylcholine. Phys Rev E. 1999 Jan;59:578–585.
  • Ponti S, Ziherl P, Ferrero C, et al. Flexoelectro-optic effect in a hybrid nematic liquid crystal cell. Liq Cryst. 1999;26(8):1171–1177.
  • Barbero G, Evangelista LR. An elementary course on the continuum theory for nematic liquid crystals. Vol. 3. Singapore: World Scientific Publishing Company; 2000.
  • Shah RR, Abbott NL. Coupling of the orientations of liquid crystals to electrical double layers formed by the dissociation of surface-immobilized salts. J Phys Chem B. 2001;105(21):4936–4950.
  • Derfel G, Felczak M. Polarized states of hybrid aligned nematic layers. Liq Cryst. 2002;29(7):889–897.
  • Barbero G, Olivero D. Ions and nematic surface energy: beyond the exponential approximation for the electric field of ionic origin. Phys Rev E. 2002 Feb;65:031701.
  • Evangelista LR, Barbero G. Adsorption–desorption phenomenon and the kinetic equation at interfaces in liquid crystalline systems. Liq Cryst. 2006;33(1):1–15.
  • Bungabong ML, Ong PB, Yang KL. Using copper perchlorate doped liquid crystals for the detection of organophosphonate vapor. Sens Actuators, B. 2010;148(2):420–426.
  • Oseen CW. The theory of liquid crystals. Trans Faraday Soc. 1933;29:883–899.
  • Frank FC. I. Liquid crystals. On the theory of liquid crystals. Discuss Faraday Soc. 1958;25:19–28.
  • Rapini A, Papoular M. Distorsión d’une lamelle nématique sous champ magnétique. Conditions d’ancrage aux parois. J Phys Colloques. 1969;30:C4–54–C4–56.
  • Barrat JL, Hansen JP. Basic concepts for simple and complex liquids. Cambridge: Cambridge University Press; 2003.
  • Barbero G, Dozov I, Palierne JF, et al. Order electricity and surface orientation in nematic liquid crystals. Phys Rev Lett. 1986 May;56:2056–2059.
  • Bogi A, Faetti S. Elastic, dielectric and optical constants of 4ʹ-pentyl-4-cyanobiphenyl. Liq Crys. 2001;28(5):729–739.
  • Blinov LM, Kabayenkov AY, Sonin AA. Invited lecture. Experimental studies of the anchoring energy of nematic liquid crystals. Liq Crys. 1989;5(2):645–661.
  • van der Linden MN, Stiefelhagen JCP, Heessels-Gürbo˘ga G, et al. Charging of poly(methyl methacrylate) (PMMA) colloids in cyclohexyl bromide: locking, size dependence, and particle mixtures. Langmuir. 2015;31(1):65–75.
  • Everts JC, van der Linden MN, van Blaaderen A, et al. Alternating strings and clusters in suspensions of charged colloids. Soft Matter. 2016;12:6610–6620.
  • Thurston RN, Cheng J, Meyer RB, et al. Physical mechanisms of dc switching in a liquid-crystal bistable boundary layer display. J Appl Phys. 1984;56(2):263–272.
  • Colpaert C, Maximus B, Meyere AD. Adequate measuring techniques for ions in liquid crystal layers. Liq Crys. 1996;21(1):133–142.
  • Cognard JJ. The solid-liquid crystal interface: structure of the double layer: consequences for the orientation of a nematic liquid crystal layer. J Electroanal Chem Interfacial Electrochem. 1984;160(1):305–319.
  • Sprokel GJ. Resistivity, permittivity and the electrode space charge of nematic liquid crystals. Mol Cryst Liq Cryst. 1973;22(3–4):249–260.
  • Sprokel GJ. Conductivity, permittivity, and the electrode space-charge of nematic liquid crystals. Part II. Mol Cryst Liq Cryst. 1974;26(1–2):45–57.
  • Murthy PRM, Raghunathan VA, Madhusudana NV. Experimental determination of the flexoelectric coefficients of some nematic liquid crystals. Liq Crys. 1993;14(2):483–496.
  • Harden J, Mbanga B, Éber N, et al. Giant flexoelectricity of bentcore nematic liquid crystals. Phys Rev Lett. 2006 Oct;97:157802.
  • Fréedericksz V, Zolina V. Forces causing the orientation of an anisotropic liquid. Trans Faraday Soc. 1933;29:919–930.
  • Meyerhofer D. Elastic and dielectric constants in mixtures of nematic liquid crystals. J Appl Phys. 1975;46(12):5084–5087.
  • Heinen M, Palberg T, Löwen H. Coupling between bulk- and surface chemistry in suspensions of charged colloids. J Chem Phys. 2014;140(12):124904.
  • Markovich T, Andelman D, Podgornik R. Charge regulation: a generalized boundary condition? Eur Phys Lett. 2016 Jan;113(2):26004.
  • Trefalt G, Behrens SH, Borkovec M. Charge regulation in the electrical double layer: ion adsorption and surface interactions. Langmuir. 2016;32(2):380–400.
  • Hallett JE, Gillespie DAJ, Richardson RM, et al. Charge regulation of nonpolar colloids. Soft Matter. 2018;14:331–343.
  • Bakhshandeh A, Frydel D, Diehl A, et al. Charge regulation of colloidal particles: theory and simulations. Phys Rev Lett. 2019 Nov;123:208004.
  • Everts JC, Samin S, Elbers NA, et al. Colloid–oil–water-interface interactions in the presence of multiple salts: charge regulation and dynamics. Phys Chem Chem Phys. 2017;19:14345–14357.
  • Leung CY, Palmer LC, Kewalramani S, et al. Crystalline polymorphism induced by charge regulation in ionic membranes. Proc Natl Acad Sci. 2013;110(41):16309–16314.
  • Ninham BW, Parsegian VA. Electrostatic potential between surfaces bearing ionizable groups in ionic equilibrium with physiologic saline solution. J Theor Biol. 1971;31(3):405–428.

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