Using optical, TEM, and ultrafast electron diffraction experiments we find that single crystal VO(2) microbeams gently placed on insulating substrates or metal grids exhibit different behaviors, with structural and metal-insulator transitions occurring at the same temperature for insulating substrates, while for metal substrates a new monoclinic metal phase lies between the insulating monoclini...

In this paper, a stochastic approach is combined with field theory and circuit methods to study how the geometrical electrical properties of holidays (defects or pores in insulating coating) metallic pipeline influence probability exceeding current density limit for corrosion. Three-dimensional FEM simulations are conducted assess shape resistivity pore on computed spread resistance value. The ...

Abstract The temperature-stress state of the concrete facade wall with a window opening, which is external enclosing structure room steel heating device, was investigated by method numerical modeling. Estimated studies were performed for winter period when system building functioning. According to results solving equations thermal stress and equation conductivity, temperature distribution over ...

This paper investigates the electrical, thermal and mechanical properties as well environmental performance of polymer cementitious composites (PCCs) sustainable coating materials for underground power cables high-voltage insulators. Particular focus is placed on optimised mix design effect manufacturing method PCCs, incorporating liquid styrene acrylic (SA) monomers, wollastonite muscovite. Mi...

Charge carriers in low-doped semiconductors may distort the atomic lattice around them and through this interaction form so-called small polarons. High carrier concentrations on the other hand can lead to short-range ordered polarons (large polarons) and even to a long-range charge and orbital order. These ordered systems should be insulating with a large electrical resistivity. However, recent...

Relationships between the flammability properties of a given plant and its chances of survival after a fire still remain unknown. We hypothesize that the bark flammability of a tree reduces the potential for tree survival following surface fires, and that if tree resistance to fire is provided by a thick insulating bark, the latter must be few flammable. We test, on subalpine tree species, the ...

We examine two-spin (2S) and cyclic four-spin (4S) magnetic interactions in insulating ladder and two-dimensional (2D) cuprates. By a comparison of eigenstates between d-p and Heisenberg models, we evaluate magnitudes of these interactions. We find that the 4S interaction is ∼10 % of nearest neighboring 2S interaction, and a diagonal 2S interaction is considerably small. The 4S interaction for ...

We introduce and analyze backscatter data for a three dimensional obstacle problem in electrostatics. In particular, we investigate the asymptotic behavior of these data as, (i), the measurement point goes to infinity, and (ii), the obstacles shrink to individual points. We also provide numerical simulations of these data.

Transportation noise contains significant low frequency components. It is difficult to sound insulate buildings against transportation noise because wall cavities are only effective in increasing sound insulation above the mass-air-mass resonance frequency. Stud walls can also have a significant structural resonance in this low frequency range, although it is not yet clear if this is significan...