Nonequilibrium structure of concentrated colloidal fluids under steady shear: leading-order response
نویسندگان
چکیده
منابع مشابه
Nonequilibrium structure and rheology of concentrated colloidal suspensions: Linear response
We propose a simple theory for the pair distribution function of a sheared colloidal suspension. The starting point is an exact equation for the stationary state pair distribution. We assume that in a shear flow the higher order distributions can be expressed through the pair distribution in the same way as in an equilibrium state. To get explicit results we use a simple decoupling approximatio...
متن کاملViscous friction in foams and concentrated emulsions under steady shear.
We present a model for the viscous friction in foams and concentrated emulsions, subject to steady shear flow. First, we calculate the energy dissipated due to viscous friction inside the films between two neighboring bubbles or drops, which slide along each other in the flow. Next, from this energy we calculate the macroscopic viscous stress of the sheared foam or emulsion. The model predictio...
متن کاملYielding of colloidal gels under steady and oscillatory shear
Submitted for the MAR15 Meeting of The American Physical Society Yielding of colloidal gels under steady and oscillatory shear GEORGE PETEKIDIS, ESMAEEL MOGHIMI, NICK KOUMAKIS, IESLFORTH, FORTH TEAM — The structural and rheological properties of intermediate volume fraction colloid polymer gels are examined during and after steady and oscillatory shear flow using rheometry, confocal microscopy,...
متن کاملThree-dimensional imaging of colloidal glasses under steady shear.
Using fast confocal microscopy we image the three-dimensional dynamics of particles in a yielded hard-sphere colloidal glass under steady shear. The structural relaxation, observed in regions with uniform shear, is nearly isotropic but is distinctly different from that of quiescent metastable colloidal fluids. The inverse relaxation time tau(alpha)(-1) and diffusion constant D, as functions of ...
متن کاملNonequilibrium steady-state response of a nematic liquid crystal under simple shear flow and electric fields.
The effect of a dc electric field on the response of a nematic liquid crystal under shear flow has been investigated by measuring the shear stress response to an ac electric field used as a probe. It was found that both the first- and second-order responses do not vanish at high frequencies, but have constant nonzero values. The experimental results are in good agreement with calculations based...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Physics: Condensed Matter
سال: 2007
ISSN: 0953-8984,1361-648X
DOI: 10.1088/0953-8984/19/20/205132