000902678 001__ 902678
000902678 005__ 20211126141918.0
000902678 037__ $$aFZJ-2021-04465
000902678 041__ $$aEnglish
000902678 1001_ $$0P:(DE-Juel1)130749$$aKang, Kyongok$$b0$$eCorresponding author
000902678 1112_ $$aIBG-2, KIT seminar$$cKarlsruhe$$d2021-10-26 - 2021-10-26$$wGermany
000902678 245__ $$aCharacterization of Field-induced Dynamical States and Equilibrium Phases of Charged DNA-viruses: In-situ Electric field Small Angle Dynamic Light Scattering and Image-time Correlation.$$f2021-10-26 - 
000902678 260__ $$c2021
000902678 3367_ $$033$$2EndNote$$aConference Paper
000902678 3367_ $$2DataCite$$aOther
000902678 3367_ $$2BibTeX$$aINPROCEEDINGS
000902678 3367_ $$2ORCID$$aLECTURE_SPEECH
000902678 3367_ $$0PUB:(DE-HGF)31$$2PUB:(DE-HGF)$$aTalk (non-conference)$$btalk$$mtalk$$s1637852096_6877$$xInvited
000902678 3367_ $$2DINI$$aOther
000902678 502__ $$cKIT
000902678 520__ $$aThe phase behavior of fd-viruses (a filamentous DNA-virus) is strongly affected by ionic strength. In equilibrium, the ionic strength determines the effective thickness and the degree of electrostatic screening of the chirality of their core, and therefore affects the concentration where phase transitions occur and the type of phases that are observed. At sufficiently low ionic strengths, nematic and chiral-nematic (meso) phases, a glass state, and several types of orientaional textures are found. Due to the very high bare charge density of the viruses, there is a large amount of condensed ions, that is, ions that are located in the immediate vicinity of the core of the viruses. Under the influence of a low AC external electric field, these condensed ions dissociate/associate, and give rise to new phases that are not found in equilibrium. In particular, a dynamical state is observed, where nematic-domains persistently melt and reform, and a critical point exists in the divergence of time and the domain size, below a critical ionic strength of about 1.2 mM. In this talk, I first discuss the slow dynamics of chiral-mesophases and the glass in equilibrium and the phase transitions in electric fields, with an emphasis on the so-called image-time correlation technique and dynamic light scattering to quantify the kinetic behaviors of field-induced dynamical states. Secondly, a short overview will be given on the response of concentrated suspensions of charged DNA rods to shear flow. Here, various types of inhomogeneous flow patterns are observed, depending on both the concentration and shear rate. If time allows, I will also present some preliminary results on the interpenetration of negatively charged fd-virus-viruses into the “membrane” of positively charged Giant Unilamellar Vesicles (GUVs), and on protein (lysozyme) aggregation, in the presence of an electric field.
000902678 536__ $$0G:(DE-HGF)POF4-5241$$a5241 - Molecular Information Processing in Cellular Systems (POF4-524)$$cPOF4-524$$fPOF IV$$x0
000902678 909CO $$ooai:juser.fz-juelich.de:902678$$pVDB
000902678 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)130749$$aForschungszentrum Jülich$$b0$$kFZJ
000902678 9131_ $$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
000902678 9141_ $$y2021
000902678 9201_ $$0I:(DE-Juel1)IBI-4-20200312$$kIBI-4$$lBiomakromolekulare Systeme und Prozesse$$x0
000902678 980__ $$atalk
000902678 980__ $$aVDB
000902678 980__ $$aI:(DE-Juel1)IBI-4-20200312
000902678 980__ $$aUNRESTRICTED