000867480 001__ 867480
000867480 005__ 20240619083557.0
000867480 037__ $$aFZJ-2019-06119
000867480 1001_ $$0P:(DE-Juel1)130797$$aLettinga, M.P.$$b0$$eCorresponding author$$ufzj
000867480 1112_ $$aOkinawa Colloids 2019$$cOkinawa$$wJapan
000867480 245__ $$aQuantitative understanding of sheared colloidal rods and the effect of length and stiffness
000867480 260__ $$c2019
000867480 3367_ $$033$$2EndNote$$aConference Paper
000867480 3367_ $$2DataCite$$aOther
000867480 3367_ $$2BibTeX$$aINPROCEEDINGS
000867480 3367_ $$2ORCID$$aLECTURE_SPEECH
000867480 3367_ $$0PUB:(DE-HGF)31$$2PUB:(DE-HGF)$$aTalk (non-conference)$$btalk$$mtalk$$s1576680949_5426$$xAfter Call
000867480 3367_ $$2DINI$$aOther
000867480 520__ $$aHigh-aspect-ratio colloidal rods are becoming increasingly important in a wide range of technological applications and products. In biology they constitute the frame of the cytoskeleton, in the form of F-actin and micro-tubular networks, while amyloids are responsible for e.g.  Alzheimer disease. The mechanical response of complex fluids containing rod-like colloids is hugely affected by the shape of the particle, though a direct relation has not been identified so far. The key to a bottom up understanding is to identify the role of rod morphology on the microscopic structural response to flow, underlying the macroscopic mechanical response. Here, we use a library of monodisperse bio-engineering viruses with variable length and stiffness, for which we determine the exact relation between structural  and mechanical response by a combination of rheology and Small Angle Neutron Scattering, resolving the orientational ordering of rod-like viruses in the flow-gradient and the flow-vorticity plane [1]. This approach allowed us to determine quantitatively the length dependence of the zero-shear viscosity [3] and shear thing behavior, using a revised version of the theory developed by Doi, Edwards, and Kuzuu to rationalize the flow behavior. Furthermore, we identified the effect of flexibility which diminishes viscosity at low shear rate and enhances it at high shear rates. The elongational viscosity of stiff rods obeys theoretical predictions, while it diminishes with flexibility [2]. Thus, this work establishes a fundament for understanding the non-linear flow behavior of more complex rod-like systems, which we demonstrate for ideal bi-disperse systems.[1] C. Lang, J. Kohlbrecher, L. Porcar, M. P. Lettinga; Polymers 8 (2016); 291 [2] C. Lang, J. Hendricks, Z. Zhang, N. K. Reddy, J. P. Rothstein,  M. P. Lettinga, J. Vermant andC. Clasen. Soft Matter, 2019,15, 833.[3] Teraoka I, Ookubo N, and Hayakawa R. Molecular theory on theentanglement effect of rodlike polymers. Phys. Rev. Lett., 55:2712, 1985.
000867480 536__ $$0G:(DE-HGF)POF3-551$$a551 - Functional Macromolecules and Complexes (POF3-551)$$cPOF3-551$$fPOF III$$x0
000867480 536__ $$0G:(EU-Grant)641839$$aDiStruc - Directed Colloidal Structure at the Meso-Scale (641839)$$c641839$$fH2020-MSCA-ITN-2014$$x1
000867480 7001_ $$0P:(DE-Juel1)168105$$aLang, Christian$$b1$$ufzj
000867480 7001_ $$0P:(DE-Juel1)130968$$aSellinghoff, Karin$$b2$$ufzj
000867480 7001_ $$0P:(DE-Juel1)130905$$aRadulescu, Aurel$$b3$$ufzj
000867480 7001_ $$0P:(DE-Juel1)166077$$aKirchenbüchler, Inka$$b4
000867480 7001_ $$0P:(DE-HGF)0$$aPorcar, Lionel$$b5
000867480 7001_ $$0P:(DE-HGF)0$$aKohlbrecher, Joachim$$b6
000867480 909CO $$ooai:juser.fz-juelich.de:867480$$pec_fundedresources$$pVDB$$popenaire
000867480 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)130797$$aForschungszentrum Jülich$$b0$$kFZJ
000867480 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)168105$$aForschungszentrum Jülich$$b1$$kFZJ
000867480 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)130968$$aForschungszentrum Jülich$$b2$$kFZJ
000867480 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)130905$$aForschungszentrum Jülich$$b3$$kFZJ
000867480 9131_ $$0G:(DE-HGF)POF3-551$$1G:(DE-HGF)POF3-550$$2G:(DE-HGF)POF3-500$$3G:(DE-HGF)POF3$$4G:(DE-HGF)POF$$aDE-HGF$$bKey Technologies$$lBioSoft – Fundamentals for future Technologies in the fields of Soft Matter and Life Sciences$$vFunctional Macromolecules and Complexes$$x0
000867480 9141_ $$y2019
000867480 920__ $$lyes
000867480 9201_ $$0I:(DE-Juel1)ICS-3-20110106$$kICS-3$$lWeiche Materie$$x0
000867480 980__ $$atalk
000867480 980__ $$aVDB
000867480 980__ $$aI:(DE-Juel1)ICS-3-20110106
000867480 980__ $$aUNRESTRICTED