Zobrazeno 1 - 10
of 100
pro vyhledávání: '"Lettinga, M. P."'
We investigate the anomalous dynamics in smectic phases of short host rods where, counter-intuitively, long guest rod-shaped particles diffusive faster than the short host ones, due to their precise size mismatch. In addition to the previously report
Externí odkaz:
http://arxiv.org/abs/2104.03614
Autor:
Lang, Christian, Kohlbrecher, Joachim, Porcar, Lionel, Radulescu, Aurel, Sellinghoff, Karin, Dhont, Jan K. G., Lettinga, M. Paul
Complex fluids containing low concentrations of slender colloidal rods can display a high viscosity, while little flow is needed to thin the fluid. This feature makes slender rods essential constituents in industrial applications and biology. Though
Externí odkaz:
http://arxiv.org/abs/1910.08349
Effects of particle stiffness on the extensional rheology of model rod-like nanoparticle suspensions
Autor:
Lang, Christian, Hendricks, Jan, Zhang, Zhenkun, Reddy, Naveen K., Rothstein, Jonathan P., Lettinga, M. Paul, Vermant, Jan, Clasen, Christian
The linear and nonlinear rheological behavior of two rod-like particle suspensions as a function of concentration is studied using small amplitude oscillatory shear, steady shear and capillary breakup extensional rheometry. The rod-like suspensions a
Externí odkaz:
http://arxiv.org/abs/1811.12931
We assess the possibility of shear banding of semidilute rod-like colloidal suspensions under steady shear ow very close to the isotropic-nematic spinodal, using a combination of rheology, small angle neutron scattering, and laser Doppler velocimetry
Externí odkaz:
http://arxiv.org/abs/1811.12882
Autor:
Ruiz-Franco, J., Marakis, J., Gnan, N., Kohlbrecher, J., Gauthier, M., Lettinga, M. P., Vlassopoulos, D., Zaccarelli, E.
Publikováno v:
Phys. Rev. Lett. 120, 078003 (2018)
Ultrasoft colloids typically do not spontaneously crystallize, but rather vitrify, at high concentrations. Combining in-situ rheo-SANS experiments and numerical simulations we show that shear facilitates crystallization of colloidal star polymers in
Externí odkaz:
http://arxiv.org/abs/1712.04430
Publikováno v:
Phys. Rev. Lett. 118, 178002 (2017)
We investigate the dynamic behavior of long guest rod-like particles immersed in liquid crystalline phases formed by shorter host rods, tracking both guest and host particles by fluorescence microscopy. Counter-intuitively, we evidence that long rods
Externí odkaz:
http://arxiv.org/abs/1703.06474
Polymer adsorption is a fundamental problem in statistical mechanics that has direct relevance to diverse disciplines ranging from biological lubrication to stability of colloidal suspensions. We combine experiments with computer simulations to inves
Externí odkaz:
http://arxiv.org/abs/1508.01415
Autor:
Kirchenbuechler, Inka, Guu, Donald, Kurniawan, Nicholas A., Koenderink, Gijsje H., Lettinga, M. Paul
Publikováno v:
Nat. Commun. 6:5060
While semi-flexible polymers and fibers are an important class of material due to their rich mechanical properties, it remains unclear how these properties relate to the microscopic conformation of the polymers. Actin filaments constitute an ideal mo
Externí odkaz:
http://arxiv.org/abs/1501.02163
Publikováno v:
Physical Review E 84, 041704 (2011)
We report on the dynamics in colloidal suspensions of stiff viral rods, called fd-Y21M. This mutant filamentous virus exhibits a persistence length 3.5 times larger than the wild-type fd-wt. Such a virus system can be used as a model system of rodlik
Externí odkaz:
http://arxiv.org/abs/1306.5430
Autor:
Naderi, Saber, Pouget, Emilie, Ballesta, Pierre, van der Schoot, Paul, Lettinga, M. Paul, Grelet, Eric
We report on single-particle dynamics of strongly interacting filamentous fd virus particles in the liquid-crystalline columnar state in aqueous solution. From fluorescence microscopy we find that rare, discrete events take place, in which individual
Externí odkaz:
http://arxiv.org/abs/1306.5397