The spin or nonspin state of electrons in W-doped anatase TiO2 is very difficult to judge experimentally because of characterization method limitations. Hence, the effect on the microscopic mechanism underlying the visible-light effect of W-doped anatase TiO2 through the consideration of electronic spin or no-spin states is still unknown. To solve this problem, we establish supercell models of ...

We generated arrays of silver wires with a height of 1 atom and an average width of 11 atoms on the Si(557) surface via self-assembly with local × 3 3 order, and investigated the 1D plasmon formation in them using a combination of highresolution electron loss spectroscopy with low-energy electron diffraction. After a series of thermal desorption experiments followed by adding small concentratio...

Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. The MIT Faculty has made this article openly available. Please share how this access benefits you. Your story matters. The in situ n-type doping of Ge thin films epitaxial grown on Si substrates is limited to 1 Â 10 19 cm À3 by the ph...

Topological crystalline insulators (TCIs) have been of great interest in the area of condensed matter physics. We investigated the effect of indium substitution on the crystal structure and transport properties in the TCI system (Pb1−xSnx)1−yInyTe. For samples with a tin concentration x ≤ 50%, the low-temperature resisitivities show a dramatic variation as a function of indium concentration: wi...

Highly ionic metal oxide nanostructures are attractive, not only for their physiochemical properties but also for antibacterial activity. Zinc oxide (ZnO) nanostructures are known to have inhibitory activity against many pathogens but very little is known about doping effects on it. The antibacterial activity of undoped ZnO and tin (Sn) doped ZnO nanostructures synthesized by a simple, versatil...

introduction: today sport is one of the important social criterion and athletes are trying to be a champion. therefore, there is an increase in misuse of doping agents especially anabolic-androgenic steroid. this study was carried out to determine the prevalence of the doping agents' abuse among male bodybuilders' and to access their knowledge about their side effects in kermanshah gymnasiums i...

The charge carried by moving dislocations was measured in NaCl single crystals doped with divalent cation impurities, and the connection between the charge and the concentration of the free cation vacancies of the crystal was investigated. According to the experimental results the dislocations carry negative charge and the magnitude of the charge changes proportionally to the concentration of t...

We report on a correlation between a deep hole trap observed by TSC (Thermally Stimulated Current) and the so-called reverse annealing effect of the effective doping concentration in neutron-irradiated silicon detectors.

The tunnel field-effect transistor (TFET) is considered a promising next-generation due to its potentially limit-breaking low subthreshold swing and better immunity against short-channel effects. However, the ON-state current (ION) of TFETs has been critical problem. In this work, we investigated effects source doping concentration gradient (SDG) on ION n-type Si gate-all-around (GAA) nanowire ...

The effect of Fe doping in the Mn site on the magnetic, transport and structural properties of polycrystalline La 1/2 Ca 1/2 MnO 3 was studied. Doping with low Fe concentration (< 10%) strongly affects electrical transport and magnetization. Long range charge order is disrupted even for the lowest doping level studied (~2%). For Fe concentration up to 5% a ferromagnetic state develops at low te...