منابع مشابه
Alignment and nonlinear elasticity in biopolymer gels.
We present a Landau-type theory for the nonlinear elasticity of biopolymer gels with a part of the order parameter describing induced nematic order of fibers in the gel. We attribute the nonlinear elastic behavior of these materials to fiber alignment induced by strain. We suggest an application to contact guidance of cell motility in tissue. We compare our theory to simulation of a disordered ...
متن کاملOn the temperature dependence of elasticity of thermo-reversible gels
2014 In order to explain the temperature dependence of elasticity of thermo-reversible gels, a simple model is proposed It assumes that the gel consists of Langevin chains whose both ends are loosely fixed in crystalline junction regions in such a way that the segments near each end are bound densely in one of the junction region. The segments are assumed to be released from the junction with i...
متن کاملMicroscopic structure and elasticity of weakly aggregated colloidal gels.
We directly probe the microscopic structure, connectivity, and elasticity of colloidal gels using confocal microscopy. We show that the gel is a random network of one-dimensional chains of particles. By measuring thermal fluctuations, we determine the effective spring constant between pairs of particles as a function of separation; this is in agreement with the theory for fractal chains. Long-r...
متن کاملInternal Dynamics and Elasticity of Fractal Colloidal Gels
The dynamic structure factor of fractal colloidal gels is shown to exhibit a stretched exponential decay to a finite plateau with an exponent of about 0.7. The value of the plateau depends on both initial particle volume fraction f0 and scattering wave vector. We show that this behavior results from the contribution of internal elastic modes of many length scales, and present a model which acco...
متن کاملStrain-enhanced stress relaxation impacts nonlinear elasticity in collagen gels.
The extracellular matrix (ECM) is a complex assembly of structural proteins that provides physical support and biochemical signaling to cells in tissues. The mechanical properties of the ECM have been found to play a key role in regulating cell behaviors such as differentiation and malignancy. Gels formed from ECM protein biopolymers such as collagen or fibrin are commonly used for 3D cell cult...
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: Macromolecules
سال: 2022
ISSN: ['0024-9297', '1520-5835']
DOI: https://doi.org/10.1021/acs.macromol.2c01229