Tough Gel with Low Surface Friction

Solid friction in gel electrophoresis

We study the influence of solid frictional forces acting on polymer chains moving in a random environment. We show that the total reduction in the chain tension resulting from the small friction between a polymer and fixed entanglement points is a steep nonlinear function of the number of entanglements ~exponential for stretched chains!. Therefore, solid friction can drastically change the dyna...

Unsolved Problems of Surface Diffusion at Low Friction

Surface transport and diffusion at low damping reveals a number of unexplained or at least not systematically explained behaviors. Here we present two problems that require further study for a full understanding. One involves motion on a random surface, the unresolved issue being the parameter regimes leading to subdiffusive, diffusive, and superdiffusive motions at intermediate times. The othe...

Surface roughness and dry friction.

Persson's multiscale contact mechanics theory combined with a multiscale Brillouin-Prandtl-Tomlinson model is used to show that on the basis of these models "dry friction" [i.e., kinetic friction that remains at exceedingly small velocities (but still above the creep range) close to its value at higher velocities] should almost always occur for self-affine surfaces when the dominant interaction...

Friction Surface Cladding FRICTION SURFACE CLADDING DEVELOPMENT OF A SOLID STATE CLADDING PROCESS

Solid friction and polymer relaxation in gel electrophoresis.