P. V. Yudin

TL;DR: In this article, the authors investigated the melt removal process during gas laser cutting of sheet metal and found that flow separation leads to vortex formation and reflux motion of the molten film adjacent to the cutting front.

TL;DR: In this paper, the products of laser cutting of metals on an automated laser setup are investigated, where soft wax was used instead of metal transforming into the melt; soft wax filled a narrow flat slot between two glass plates and was removed by a heated air stream.

TL;DR: In this article, the internal structure of neutral 180 degrees domain walls in perovskite-type ferroelectrics is studied in terms of Landau theory taking into account electromechanical coupling.

TL;DR: In this article, the authors developed a theory to describe the polarization response in an inhomogeneously heated thin plate and demonstrated that the effect can be used for the conversion of waste heat into electric power, up to tens of Watts per kilogram of flexoelectric material.

TL;DR: In this paper, the authors investigated the optimal strategies for pyroelectric energy harvesting from the point of view of nonstationary heat exchange for the application-relevant case of harvesting with a pyrone from a fluid heat source and showed that for a fixed lamella thickness by choosing appropriate phase shift between the temperature oscillations and the voltage on the pyro-electric lamella, one can effectively operate at high frequencies and achieve a two to threefold increase in specific power with respect to the classical Olsen cycle.