We study the acoustic-phonon spectra in periodic and quasiperiodic (Fibonacci type) superlattices made up from III–V nitride materials (GaN) intercalated by sapphire (Al<Subscript>2</Subscript>O<Subscript>3</Subscript>). Due to the misalignments between the sapphire and the GaN layers that can lead to threading dislocation densities as...</subscript></subscript>

A simple electronic experiment using a field-effect-transistor–type microstructure is suggested. The thin superconductor layer forms the source-drain channel of a layered structure across which an AC current is applied. It is found necessary to measure the second harmonic of the source-gate...

In this work we show that the polaron effects in cylindrical quantum wires are function of the cylinder radius R<Subscript>0</Subscript> through the boundary conditions for both the ionic and the electronic motion and through the size dependence of the static and high frequency dielectric constants. We find that the...</subscript>

By neutron diffraction it was shown that nanostructured Se confined within a porous glass matrix exists in a crystalline as well as in an amorphous state. The spontaneous crystallization of crystalline Se from confined amorphous phase was observed. The root-mean-square amplitudes of the atomic...

A new method is developed to obtain crystalline nanorods of WO3 using tungsten organometallic compound, tungsten hexacarbonyl, at a low temperature of around 700°C. The diameters of the nanorods were in the range of 20–50 nm, and their lengths were up to several micrometers. The WO3 nanorods...