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This paper reports on the preparation of nano-structured of MgxZn1-xO thin films by sol-gel spin coating method which will be used as a template layer to grow carbon nanotubes. The MgxZn1-xO films were deposited on Pt/Si (100) substrates. In this work, we focused on the effect of sol aging and Mg content on the film structure and resistivity. Sols with Mg content of x = 0.1, 0.3 and 0.5 were subjected...
In this paper we present results of SEM, XRD and EXAFS studies of palladium-carbon nanostructural films prepared in two-steps method on pure and oxidized silicon substrates. Structural, topographical and morphological differences were found between films deposited on those substrates.
We report the generation of trapezoidal current pulses by applying a dc voltage to a single nanocrystalline silicon microwire through a load. The wire is expected to be physically disconnecting and reconnecting at a constriction near its midpoint as a result of volume change in repeated solid-liquid phase transitions. A scanning electron microscope image and the wire's electrical characteristics suggest...
In this paper we describe the production of nanocrystallites of silicon embedded in an amorphous silicon matrix by Hot Wire CVD. Prior modification of the substrate results in a procedure for increasing the volume fraction and density of the nano-crystallites relative to the other phases. A macroscopic process, random linear grooving, applied to the substrates has been shown to have a significant...
Capacitive humidity sensors were fabricated using countersunk interdigitated electrodes coated with amorphous nanostructured TiO2, SiO2, and Al2O3 thin films grown by glancing angle deposition. The capacitive response and response times for each sensor were measured. The sensor utilizing TiO2 exhibited the largest change in capacitance, increasing exponentially from ~ 1 nF to ~ 1muF for an increase...
Bulk nanostructured (Bi,Sb)2Te3 compounds and GeTe based amorphous/nanocrystal composites have been successfully fabricated by the combined hydrothermal/hot-pressing and quenching/annealing methods, respectively. The (Bi,Sb)2Te3 nanopowders synthesized by hydrothermal method exhibit a hollow-like structure. After hot-pressing, the nanoscale grains varying from tens to hundreds of nanometers were found...
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