Reaction-diffusion models have been used to describe pattern formation on the cellular scale, and traditionally do not include feedback between cellular shape changes and biochemical reactions. We introduce here a distinct reaction-diffusion-elasticity approach: The reaction-diffusion part describes bistability between two actin orientations, coupled to the elastic energy of the cell membrane d...

Inspired by the “Silver Surfer” cartoons and movies, we designed and developed a surfboard travel interface, which works in either tilt or balance mode. The system supports the comparison of isometric and elastic devices for rate-controlled and position-controlled travel in virtual environments. In this paper, we demonstrate the interface as well as the setup of a complete virtual reality syste...

A two-dimensional earthquake model that consists of a single block resting upon a slowly moving rough surface and connected by two springs to rigid supports is studied. Depending on the elastic anisotropy and the friction force three generic regimes are possible: i) pure creep; ii) pure stick-slip motion; and iii) a mixed regime. In all cases the long-time dynamics (fixed point, periodic orbit ...

We discuss the linear and nonlinear rheology of concentrated microscale emulsions, amorphous disordered solids composed of repulsive and deformable soft colloidal spheres. Based on recent results from simulation and theory, we derive quantitative predictions for the dependences of the elastic shear modulus and the yield stress on the droplet volume fraction. The remarkable agreement with experi...

A free material surface which supports surface diffusion becomes unstable when put under external nonhydrostatic stress. Since the chemical potential on a stressed surface is larger inside an indentation, small shape fluctuations develop because material preferentially diffuses out of indentations. When the bulk of the material is purely elastic one expects this instability to run into a finite...

The most important information required for chatter stability analysis is the dynamics of the involved structures, i.e. the frequency response functions (FRFs) which are usually determined experimentally. In this study, the tool point FRF of a spindle-holder-tool assembly is analytically determined by using the receptance coupling and structural modification techniques. Timoshenko’s beam model ...

Photocurrent measurements have been performed on a quantum cascade detector structure under strong magnetic field applied parallel to the growth axis. The photocurrent shows oscillations as a function of B. In order to describe that behavior, we have developed a rate equation model. The interpretation of the experimental data supports the idea that an elastic scattering contribution plays a cen...

In this study, oneand two-dimensional NMR experiments are applied to uniformlyN-enriched synthetic elastin, a recombinant human tropoelastin that has been crosslinked to form an elastic hydrogel. Hydrated elastin is characterized by large segments that undergo “liquidlike” motions that limit the efficiency of cross-polarization. The refocused INEPT experiment is used to target these extensive, ...

The paper deals with a mechanical system consisting of hinged rectangular plate and an additional viscoelastic support considering its mass-inertia. impact the characteristics on strained state is studied by original approach extracting elastic, viscous inertial components from total reaction. assumed to be medium thickness, elastic isotropic. Timoshenko hypothesis used for deformation equation...

bone has a capability to repair itself when it is fractured. repair involves the generation of intermediatetissues, such as fibrous connective tissue, cartilage and woven bone, before final bone healing can occur. theprocess of cartilage-to-bone transition (cbt) is a key for the achievement of rigid bone healing duringfracture repair. we tested this potential for elastic cartilage using a long ...