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@INPROCEEDINGS{Dhont:1007833,
author = {Dhont, Jan K.G.},
title = {{E}lectric-{F}ield {I}nduced {P}hases $\&$ {S}tates and
{G}lass {F}ormation},
school = {Universidad Autonoma de San Luis Potosi},
reportid = {FZJ-2023-02218},
year = {2023},
abstract = {In the first part of this talk I will give a short
introduction to colloids. In the second part, the phases and
dynamical states that are induced by external electric
fields in a system of very long and thin and highly charged
rod-like colloids will be discussed. Experimental results on
suspensions of fd-virus particles within the two-phase
isotropic-nematic coexistence region will be presented.
These fd-virus particles serve as model rod-like colloids,
which consist of ds-DNA strands covered with about 6000 coat
proteins, they have a length of 880 nm, a thickness of 7 nm,
with a persistence length of about 2500 nm. Depending on the
electric field strength and the frequency, several
phase/state-transitions are induced: a transition from
nematic to chiral nematic, from a nematic to a homeotropic
state, and a transition to a dynamical state where nematic
domains persistently melt and reform. The time scale on
which melting and reforming occurs and the size of the
domains both diverge at what could be identified as a
“non-equilibrium critical point”. An explanation of
these phenomena is presented, both on an intuitive level and
based on the Smoluchowski equation, which is an equation of
motion for the probability density function for the
positions and orientations of the rods.},
month = {Mar},
date = {2023-03-22},
organization = {Celebrating 40 Years of German-Mexican
Partnership in Soft Condensed Matter,
San Luis Potosi (Mexico), 22 Mar 2023 -
27 Mar 2023},
subtyp = {Invited},
cin = {IBI-4},
cid = {I:(DE-Juel1)IBI-4-20200312},
pnm = {5243 - Information Processing in Distributed Systems
(POF4-524)},
pid = {G:(DE-HGF)POF4-5243},
typ = {PUB:(DE-HGF)6},
url = {https://juser.fz-juelich.de/record/1007833},
}