000133529 001__ 133529
000133529 005__ 20240619083447.0
000133529 037__ $$aFZJ-2013-01963
000133529 1001_ $$0P:(DE-Juel1)130797$$aLettinga, Pavlik$$b0$$eCorresponding author
000133529 1112_ $$a76th Annual Meeting of the DPG and DPG Spring Meeting$$cBerlin$$d2012-03-25 - 2012-03-30$$wGermany
000133529 245__ $$aIn situ large amplitude oscillatory shear (LAOS) experiments on rod-like viruses and colloidal platelets
000133529 260__ $$c2012
000133529 3367_ $$0PUB:(DE-HGF)6$$2PUB:(DE-HGF)$$aConference Presentation$$bconf$$mconf$$s1366103713_25245$$xOther
000133529 3367_ $$033$$2EndNote$$aConference Paper
000133529 3367_ $$2DataCite$$aOther
000133529 3367_ $$2ORCID$$aLECTURE_SPEECH
000133529 3367_ $$2DRIVER$$aconferenceObject
000133529 3367_ $$2BibTeX$$aINPROCEEDINGS
000133529 502__ $$cTU Berlin
000133529 520__ $$aHighly anisotropic particles are by nature susceptible to external fields. In particular shear forces can cause a pronounced shear thinning, where a highly viscous unordered system is sheared into a low viscous ordered system. This makes shear thinning behavior both fundamentally and practically interesting. The rheological and structural responses of the system at the onset of shear thinning can be conveniently studied by large amplitude oscillatory shear (LAOS) in combination with in situ scattering techniques. Here we study two systems: 1) dispersions of rod-like (fd) viruses approaching the isotropic - nematic transition in combination with time-resolved small-angle neutron scattering; 2) dispersions of gibbsite platelets around the nematic phase in combination with time-resolved small-angle X-ray scattering.   Viewing the responses as indicating a sequence of physical processes, we identify, for the rod-dispersions, a region of purely elastic response accompanied by an increase in the orientational ordering. By yielding this is followed in sequence by a region of fluid-like behavior at an almost constant ordering.  The platelet dispersions display, for a broad range of frequencies, a transition from singlet feature in the scattering at small strain amplitude to a doublet at large strain amplitude.  This suggests the existence of a critical strain for reorienting the platelets, which is not reflected in the bulk rheology.
000133529 536__ $$0G:(DE-HGF)POF2-451$$a451 - Soft Matter Composites (POF2-451)$$cPOF2-451$$fPOF II$$x0
000133529 7001_ $$0P:(DE-Juel1)130719$$aHolmqvist, Peter$$b1
000133529 7001_ $$0P:(DE-Juel1)VDB56805$$aKleshchanok, D.$$b2
000133529 7001_ $$0P:(DE-Juel1)141927$$aBallesta, Pierre$$b3
000133529 7001_ $$0P:(DE-Juel1)VDB108913$$aRogers, S.A.$$b4
000133529 7001_ $$0P:(DE-Juel1)VDB4220$$aKohlbrecher, J.$$b5
000133529 7001_ $$0P:(DE-HGF)0$$aStruth, B.$$b6
000133529 909CO $$ooai:juser.fz-juelich.de:133529$$pVDB
000133529 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)130797$$aForschungszentrum Jülich GmbH$$b0$$kFZJ
000133529 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)130719$$aForschungszentrum Jülich GmbH$$b1$$kFZJ
000133529 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)141927$$aForschungszentrum Jülich GmbH$$b3$$kFZJ
000133529 9131_ $$0G:(DE-HGF)POF2-451$$1G:(DE-HGF)POF2-450$$2G:(DE-HGF)POF2-400$$3G:(DE-HGF)POF2$$4G:(DE-HGF)POF$$aDE-HGF$$bSchlüsseltechnologien$$lBioSoft$$vSoft Matter Composites$$x0
000133529 9141_ $$y2012
000133529 920__ $$lyes
000133529 9201_ $$0I:(DE-Juel1)ICS-3-20110106$$kICS-3$$lWeiche Materie $$x0
000133529 980__ $$aconf
000133529 980__ $$aVDB
000133529 980__ $$aUNRESTRICTED
000133529 980__ $$aI:(DE-Juel1)ICS-3-20110106