In this work we perform a theoretical analysis of the thermoelectric performance of polycrystalline Si NWs by considering both electron and phonon transport. The simulations are calibrated with experimental data from monocrystalline and polycrystalline structures. We show that heavily doped polycrystalline NW structures of grain size below 100nm might offer an alternative approach to achieve si...

The charge transport equation is affected by thermal and concentration gradients as well as any applied electric field. In the charge transport equation the electrical conductivity, the electrical diffusivity and the electrical thermophoresis coefficient are all dependent on the electrical mobility which in turn is dependent on the collision time. When a time varying electric field is applied t...

the abrasion is a significant issue, especially in machining of rigid steels. a functional and suitable approach for enhancing the heat transfer from machining area is using an intermediate fluid with higher heat transfer potential instead of common fluids. the objective of this experimental study is to discuss production, stability and thermal conductivity examination of water/graphene oxide n...

Authors reported an effective path to decrease the thermal conductivity while to increase the coefficient of thermal expansion, thus enhancing the thermo-physical properties of the LnMeA11O19-type magnetoplumbite LaMgAl11O19 by simultaneously substituting La(3+), Mg(2+) and Al(3+) ions with large ionic radius Ba(2+), Zn(2+) and Ti(4+), respectively. The mechanism behind the lowered thermal cond...

In order to understand the effect of Pb-CuI co-doping on the thermoelectric performance 8 of Bi2Te3, n-type Bi2Te3 co-doped with x at% CuI and 1/2x at% Pb (x = 0, 0.01, 0.03, 0.05, 0.07, and 9 0.10) were prepared via high temperature solid state reaction and consolidated using spark plasma 10 sintering. Electron and thermal transport properties, i.e., electrical conductivity, carrier 11 concent...

A correct consideration of the thermal factors during design phase civil engineering structures in permafrost area determines their reliable and safe exploitation. Among important indicators selection solutions is conductivity coefficient construction materials used. The usually chosen from reference tables, but when using mixtures, determined through a calculation. aim present research was to ...

A systematic study has been made on the effect of Fe substitution by means of resistivity, thermal conductivity, and Seebeck coefficient of the Mg1−xFexB2 superconductor involving 0%, 0.3%, 0.6%, 1.2%, and 3.0% Fe content. The superconducting transition has been found to be very sharp 0.2 K for a pristine sample and substitution of Fe results in the decrease of TC with the increase in the trans...