TY  - JOUR
AU  - Kang, Kyongok
TI  - Charged Colloidal Rods Out of Equilibrium
JO  - Advances in Chemical Engineering and Science
VL  - 05
IS  - 01
SN  - 2160-0406
CY  - Irvine, Calif.
PB  - Scientific Research Publ.
M1  - FZJ-2016-00169
SP  - 23 - 32
PY  - 2015
AB  - This article is a comprehensive overview of the ongoing research of the author on charged colloid- al rods out of equilibrium, under external electric fields and at high concentrations around the glass transition. The suspensions of fd-virus particles are used as a model system for charged col- loidal rods, which exhibit several disorder-order (and liquid-crystalline) phase transitions. When a low AC electric field is applied to suspensions in isotropic-nematic coexistence concentration, with frequencies that are sufficiently low to polarize the electric double layer and the layer of condensed ions, various phases/states are induced: a chiral nematic, a dynamical state where ne- matic domains persistently melt and form, and a uniform homeotropic phase. A point in the field-amplitude versus frequency diagram, where various transitions lines meet, can be identified as a non-equilibrium critical point. Without an electric field, at high concentrations of charged fd-rods, various self-assembled orientation textures are found beyond the isotropic-nematic coex- istence regions, and a glass transition is observed on approach and within the glass state that are probed. The presented system exhibits transient behaviors of repulsive glasses and slow dynamics out of equilibrium.
LB  - PUB:(DE-HGF)16
DO  - DOI:10.4236/aces.2015.51003
UR  - https://juser.fz-juelich.de/record/280392
ER  -