% IMPORTANT: The following is UTF-8 encoded. This means that in the presence % of non-ASCII characters, it will not work with BibTeX 0.99 or older. % Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or % “biber”. @ARTICLE{Kang:186475, author = {Kang, Kyongok}, title = {{E}lectric-field induced microdynamics of charged rods}, journal = {Frontiers in Physics}, volume = {2}, issn = {2296-424X}, address = {Lausanne}, publisher = {Frontiers Media}, reportid = {FZJ-2015-00549}, pages = {73}, year = {2014}, abstract = {Electric-field induced phase/state transitions are observed in AC electric fields with small amplitudes and low frequencies in suspensions of charged fibrous viruses (fd), which are model systems for highly charged rod-like colloids. Texture- and particle-dynamics in these field-induced states, and on crossing transition lines, are explored by image time-correlation and dynamic light scattering, respectively. At relatively low frequencies, starting from a system within the isotropic-nematic coexistence region, a transition from a nematic to a chiral nematic is observed, as well as a dynamical state where nematic domains melt and reform. These transitions are preliminary due to field-induced dissociation/association of condensed ions. At higher frequencies a uniform state is formed that is stabilized by hydrodynamic interactions through field-induced electro-osmotic flow where the rods align along the field direction. There is a point in the field-amplitude vs. frequency plane where various transition lines meet. This point can be identified as a “non-equilibrium critical point,” in the sense that a length scale and a time scale diverge on approach of that point. The microscopic dynamics exhibits discontinuities on crossing transition lines that were identified independently by means of image and signal correlation spectroscopy.}, cin = {ICS-3}, ddc = {530}, cid = {I:(DE-Juel1)ICS-3-20110106}, pnm = {451 - Soft Matter Composites (POF2-451)}, pid = {G:(DE-HGF)POF2-451}, typ = {PUB:(DE-HGF)16}, doi = {10.3389/fphy.2014.00073}, url = {https://juser.fz-juelich.de/record/186475}, }