Journal Article

FZJ-2016-00169

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Charged Colloidal Rods Out of Equilibrium

Kang, K. (Corresponding author)FZJ*

2015
Scientific Research Publ. Irvine, Calif.

This record in other databases:  

Please use a persistent id in citations: http://hdl.handle.net/2128/9677  doi:10.4236/aces.2015.51003

Abstract: 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.

---

Contributing Institute(s):

1. Weiche Materie (ICS-3)

Research Program(s):

1. 551 - Functional Macromolecules and Complexes (POF3-551) (POF3-551)

Appears in the scientific report 2015

---

Database coverage:
; ;

---