Strain history dependence of the nonlinear stress response of fibrin and collagen networks. Intracellular stress tomography reveals stress focusing and structural anisotropy in cytoskeleton of living cells. Single cell mechanics: stress stiffening and kinematic hardening. Rapid stiffening of integrin receptor-actin linkages in endothelial cells stimulated with thrombin: a magnetic bead microrheology study. ![]() R., Hellerer, U., Essler, M., Aepfelbacher, M. Comparison of mathematical models for cat lung and viscoelastic balloon derived by Laplace transform methods from pressure-volume data. ![]() Time course and heterogeneity of contractile responses in cultured human airway smooth muscle cells. Mesenchymal stem cell mechanics from the attached to the suspended state. Power laws in microrheology experiments on living cells: comparative analysis and modeling. Probing the viscoelastic behavior of cultured airway smooth muscle cells with atomic force microscopy: stiffening induced by contractile agonist. Universal physical responses to stretch in the living cell. Pulmonary retention of primed neutrophils: a novel protective host response, which is impaired in the acute respiratory distress syndrome. Airway obstruction in asthma: does the response to a deep inspiration matter? Respir. Equibiaxial deformation-induced injury of alveolar epithelial cells in vitro. A model for cytoplasmic rheology consistent with magnetic twisting cytometry. Measurement of local viscoelasticity and forces in living cells by magnetic tweezers. Local measurements of viscoelastic parameters of adherent cell surfaces by magnetic bead microrheometry. A serial micropipette microfluidic device with applications to cancer cell repeated deformation studies. Weak ergodicity breaking and aging in disordered systems. ![]() Cytoskeletal remodelling and slow dynamics in the living cell. Linear and nonlinear rheology of living cells. Stiffness and prestress are closely associated in adherent contractile cells. Physical limits of cell migration: control by ECM space and nuclear deformation and tuning by proteolysis and traction force. Scaling the microrheology of living cells. ![]() The creep test consists of measuring the time dependent strain \(\epsilon (t) = \delta (t)/L_0\) resulting from the application of a steady uniaxial stress \(\sigma_0\) as illustrated in Figure 3.Fabry, B. Figure 2: A generic modulus-temperature map for polymers. It provides a map of a vital engineering property, and is also a fingerprint of the molecular motions available to the material. Clearly, a plot of modulus versus temperature, such as is shown in Figure 2, is a vital tool in polymer materials science and engineering. Neither the glassy nor the rubbery modulus depends strongly on time, but in the vicinity of the transition near \(T_g\) time effects can be very important. If the material is not crosslinked, the stiffness exhibits a short plateau due to the ability of molecular entanglements to act as network junctions at still higher temperatures the entanglements slip and the material becomes a viscous liquid. Differentiation of this expression gives the slope of the stress-strain curve at the origin as \(E_r = 3NRT\). Where \(\sigma\) is the stress, \(N\) is the crosslink density (\(mol/m^3\)), and \(\lambda = L/L_0\) is the extension ratio.
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