000911212 001__ 911212
000911212 005__ 20221116131015.0
000911212 037__ $$aFZJ-2022-04517
000911212 041__ $$aEnglish
000911212 1001_ $$0P:(DE-Juel1)130749$$aKang, Kyongok$$b0$$eCorresponding author
000911212 1112_ $$aDFG-NRF Joint Workshop$$cBusan$$d2022-08-31 - 2022-09-03$$wSouth Korea
000911212 245__ $$aCharged (Filamentous) DNA-viruses in External Electric Fields and Shear Flow
000911212 260__ $$c2022
000911212 3367_ $$033$$2EndNote$$aConference Paper
000911212 3367_ $$2DataCite$$aOther
000911212 3367_ $$2BibTeX$$aINPROCEEDINGS
000911212 3367_ $$2DRIVER$$aconferenceObject
000911212 3367_ $$2ORCID$$aLECTURE_SPEECH
000911212 3367_ $$0PUB:(DE-HGF)6$$2PUB:(DE-HGF)$$aConference Presentation$$bconf$$mconf$$s1668514538_2649$$xInvited
000911212 520__ $$aBacteriophage DNA-viruses (fd) consist of a DNA strand that is covered by several thousands of fd-coat proteins. The 880 nm long DNA-virus is relatively stiff due to these coat proteins (the persistence length is about 2500 nm). In addition, the coat proteins render a DNA-virus highly charged, such that a large fraction of ions are condensed onto the core of the virus. By varying the ionic strength, the equilibrium phase behaviors are explored well for the stable chiral-mesophases, as well the field-induced new phases in non-equilibrium processes at ow AC electric fields and shear flow. I will address the response of concentrated DNA-virus suspensions to external electric fields (for suspensions in the two-phase isotropic-nematic coexistence region), and to externally applied shear flow (for crowded suspensions in the glassy state). Several phases and dynamical states are induced by electric fields, depending on the field strength and frequency, due to field-induced dissociation/association of condensed ions and hydrodynamic interactions thorugh field-induced electro-osmotic flow. Shear flow induces several kinds of inhomogeneous flow profiles. At low shear rates, the plug flow and fracture are observed, a transition to a shear-banded state is seen on increasing the shear rate, in coexistence with Taylor vorticity banding, while at high shear rates a homogeneously sheared profile is observed where the shear rate is constant throughout the gap of the shear cell. The above phenomena have been observed in bulk, with 1 mm thick cylindrical sample cells. It would be also interesting to investigate the effect of confinement in an arbitrary shape of curvatures, using microfluidic channel flows, allowing the gradients of different ionic strengths. In particular, the role of confinement in both field-induced dynamical states for small (chiral) nematic domains, and the shear-induced fracture in the glassy state can be further conveyed, to which extent the size of (chiral) nematic domains are affected by the dimensions in the confining geometry.
000911212 536__ $$0G:(DE-HGF)POF4-5241$$a5241 - Molecular Information Processing in Cellular Systems (POF4-524)$$cPOF4-524$$fPOF IV$$x0
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000911212 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)130749$$aForschungszentrum Jülich$$b0$$kFZJ
000911212 9131_ $$0G:(DE-HGF)POF4-524$$1G:(DE-HGF)POF4-520$$2G:(DE-HGF)POF4-500$$3G:(DE-HGF)POF4$$4G:(DE-HGF)POF$$9G:(DE-HGF)POF4-5241$$aDE-HGF$$bKey Technologies$$lNatural, Artificial and Cognitive Information Processing$$vMolecular and Cellular Information Processing$$x0
000911212 9141_ $$y2022
000911212 920__ $$lyes
000911212 9201_ $$0I:(DE-Juel1)IBI-4-20200312$$kIBI-4$$lBiomakromolekulare Systeme und Prozesse$$x0
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