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Mechanical testing of glassy and rubbery polymers in numerical simulations: Role of boundary conditions in tensile stress experimentsThe vacuum deposition of metals onto poly (dimethylsiloxane) (PDMS) gels was studied as a function of the crosslink density and the polymer substrate temperature during the deposition. Reflectance and conductance measurements were used to characterize the quality of the resulting metal films. Variations in the measurements were found to depend on the substrate temperature during metallization and on the particular metal used. For most cases, the variations of conductance and reflectance can be accounted for by cracks in the metal film and the coarseness of the surface texture.

We analyse the effect of post-Newtonian gravitational fields on propagation of light in a cylindrical waveguide in both a straight configuration and a spool configuration. We derive an equation for the dependence of the wave vector upon the vertical location of the waveguide. It is shown that the gravitational field produces a small shift in the wave vector, which we determine, while the spooling creates additional modes which could perhaps be measurable in future accurate experiments.

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The least action principle is used to derive a general mathematical model of the motion of point objects subject to non-instantaneous interactions. A Lagrangian Equation of Motion, a Hamiltonian Formalism, a Poisson Bracket and the Relation of Reaction Mechanics and the General Theory of Relativity are derived here. In the limit of no delay, the equation of motion reverts to Newtonian Mechanics. In the limit of infinitesimal delay, the equation of motion takes the form of the Geodesic Equation of Motion of the General Theory of Relativity. For two objects, the single instantaneous interaction splits into two interactions when the propagation delay is considered. Object ONE experiences the following interactions at the present: it senses an interaction radiated by object TWO in the past. It also radiates an interaction that other objects might or might not sense in the future. It experiences a Recoil interaction equal in magnitude and opposed to the direction of the interaction it radiated. The Recoil interaction is independent of the radiated interaction reaching its target or not reaching its target. The Recoil interaction is causal.