Knowledge of the spin-wave dispersion relation is a prerequisite for explanation many magnonic phenomena as well practical design devices. Spin-wave measurement by established optical techniques such Brillouin light scattering or magneto-optical Kerr effect at ultralow temperatures often forbiddingly complicated. By contrast, microwave spectroscopy can be used all but it usually lacks spatial a...

The optical phase shifter that constantly rotates the local oscillator is a necessity in continuous-variable quantum key distribution systems with heterodyne detection. In previous experimental implementations, generally regarded as an ideal passive device perfectly of electromagnetic wave $90^\circ$. However, practice introduces imperfections, mainly measurement angular error, which inevitably...

Time-dependent, two-dimensional Sakiadis flow of quiescent fluid is considered. The induced by stationary flat plate via uniform free-stream (Blasius flow). variable conductivity and viscosity ratio parameters non-linear chemical reaction are employed in the mathematical equations. Similarity variables governing transport expressions to convert into ordinary differential system. transformed sys...

Flexible Polyurethane (PU) foam samples with different densities and chemical formulations were tested in quasi-static stress-strain compression tests. The compression tests were performed using the Lloyd LR5K Plus instrument at fixed compression strain rate of 0.033 s-1 and samples were compressed up to 70% compression strains. All foam samples were tested in the foam rise direction and their ...