The effect of thermal annealing on leakage current and dielectric breakdown in self-assembled nanodielectric (SAND)metal-insulator-semiconductor (MIS) devices is investigated. Annealing at temperatures of g300 C for 120 s in a reducing atmosphere significantly reduces the leakage current density at typical operating voltages (Vg=3V)while greatly narrowing the distribution of breakdown voltages....

Random-amplified polymorphic DNA (RAPD) markers (8) are a powerful tool for genome analysis (7). Nevertheless, the difficulties to achieve a high pattern repeatability represent a major drawback for the routine implementation of RAPD markers. Amplification products obtained depend on various factors, such as the concentration of the reaction mixture constituents, the source of Taq DNA polymeras...

Dielectric properties of composites near percolation threshold (fc) are often sensitive to thermal treatments, and the annealing temperature is usually associated with a polymer's rheological properties. In this study, the influences of the thermal treatment on dielectric properties are investigated for the polystyrene (PS) matrix composite reinforced by graphene nanoplatelets (GNP) fillers nea...

We have used thermal treatment and rubbed polyimide alignment layers to produce large domains of poly(9,9dioctylfluorene-co-bithiophene) alternating copolymer (F8T2). The direction of rubbing on the polyimide surface determines the orientation of these domains, allowing us to create thin-film transistors with channel lengths parallel and perpendicular to the liquid crystal polymer director. We ...

Photoalignment layers comprising Polymer 1 were prepared using linearly polarized UV-irradiation for chloroformvapor annealing of p-conjugated oligomer films, both processes conducted at room temperature. The resultant uniaxially oriented monodomain films exhibited S 1⁄4 0.74 (at Pr 1⁄4 0.90) and 0.82 (at Pr 1⁄4 0.95) in OF and OF2T films, respectively, apparently limited by film dewetting in c...

Bulk nanostructured materials are made from the assembly of octahedral PbSe nanocrystals. After thermal annealing, the artificial bulk demonstrates a large difference in behavior depending on the temperature, and a large variation of room-temperature resistivity of up to seven orders of magnitude. This variation originates from the high-indexed sharp edges of the octahedral nanocrystals. As the...

Obliquely deposited thin films of ternary Ag–Ge–S glasses are characterized in this work. Thin films are fabricated in a vacuum thermal evaporator at different evaporation angles and examined by Raman spectroscopy. The Raman mode frequency of GeS4 corner-sharing (CS) structure of the as-deposited films display a red-shift as a function of Ag content due to reduced global connectivity, and there...

Bulk nanostructured materials are made from the assembly of octahedral PbSe nanocrystals. After thermal annealing, the artificial bulk demonstrates a large difference in behavior depending on the temperature, and a large variation of room-temperature resistivity of up to seven orders of magnitude. This variation originates from the high-indexed sharp edges of the octahedral nanocrystals. As the...

While spacecrafts experience temperatures from -120 to 110°C on the orbit, their surface reaches extremely high temperatures, well above 1000 °C, during descent into the atmosphere due to aerodynamic heating. Sophisticated insulation systems are designed for thermal protection. One of the steps in designing a protection system is experimental temperature measurements. Neutron flux induces point...

GaN samples were implanted with Be and annealed in different conditions order to activate the shallow BeGa acceptor. Low-temperature photoluminescence spectra studied find BeGa-related defects samples. A yellow band a maximum at about 2.2 eV (the YLBe band) was observed nearly all protected an AlN cap during annealing under ultrahigh N2 pressure. green 2.35 GL2 band), attributed nitrogen vacanc...