We homogenize the mechanical properties of a two-phase polymer composite, made polyurethane matrix containing porous spherical silicone-based inclusions, and designed to be used for wave control as local resonant insulator. First we consider homogenized energy an expression obtained by explicit method. Then, couple inclusions means second-order tangent Direct finite element simulations allow so...

The particle-hole continuum (PHC) for massive Dirac fermions provides an unprecedented opportunity for the formation of two collective split-off states, one in the singlet and the other in the triplet (spin-1) channel, when the short-range interactions are added to the undoped system. Both states are close in energy and are separated from the continuum of free particle-hole excitations by an e...

Abstract—This paper presents the experimental results of 11 kV and 33 kV silicon composite insulators under artificial salt and urea polluted conditions. The tests were carried out under different seasons like summer, winter, and monsoon. The artificial pollution is prepared by properly dissolving the salt and urea in the water. The prepared salt and urea pollutions are sprayed on the insulator...

The half-filled two-dimensional Hubbard model in presence of a uniform and static parallel magnetic field has been studied by means of the Composite Operator Method. A fully self-consistent solution, fulfilling all the constrains coming from the Pauli principle, has been found. The relevant features of a metal-insulator transition in presence of a magnetic field have been analyzed. The results ...

Cancer up-regulated drug resistant (CUDR) is a novel non-coding RNA gene. Herein, we demonstrate excessive CUDR cooperates with excessive CyclinD1 or PTEN depletion to accelerate liver cancer stem cells growth and liver stem cell malignant transformation in vitro and in vivo. Mechanistically, we reveal the decrease of PTEN in cells may lead to increase binding capacity of CUDR to CyclinD1. Ther...

We provide a microscopic-level derivation of earlier results showing that, in the critical vicinity superconductor-to-insulator transition (SIT), disorder and localization become negligible structure emergent phases is determined by topological effects arising from competition between two quantum orders, superconductivity superinsulation. find around point, ground state composite incompressible...

Perhaps no single area of insulator behavior has fascinated researchers more so than predicting flashover under contaminated conditions. For traditional porcelain and glass insulators, there is a large body of literature published that includes both theoretical models and experimental tests to simulate this interesting and practically important aspect of insulator performance. Yet there still s...

The fabrication, characterization, and decoration with metallic nanoparticles of nanostructures such as nanowhiskers, nanodendrites, and fractal-like nanotrees on insulator substrates by electron-beam-induced deposition (EBID) are reviewed. Nanostructures with different morphologies of whiskers, dendrites, or trees are fabricated on insulator (Al2O3 or SiO2) substrates by EBID in transmission e...

Aerogels have been used as a heat insulating material for the last few decades and possess extremely remarkable qualities insulation. The like light weight (contains more air) easy to blend with other materials make aerogel better insulator than any of this kind. provides 2 3 times insulation styrofoam which is also weight. property gets enhanced, if composite. interesting details about will be...