We consider acoustic wave propagation in periodic scaffolds saturated by inviscid fluid at rest. To analyze the wave dispersion, two approaches are examined: the periodic homogenization (PH) and the Floquet-Bloch wave decomposition (FB). While PH gives dispersion-less response, the FB method ...

Solar cells based on black silicon (b-Si) are proven to be promising in photovoltaics (PVs) by exceeding 22%efficiency. To reach high efficiencies with b-Si surfaces, the most crucial step is the effective surface passivation. Up to now, the highest effective minority carrier lifetimes&...

This article reports the fabrication and characterization of thin films of pure and cobalt doped ZnO (Co at 4% and 7%), a transparent diluted magnetic semiconductor (DMS) grown on ‘Si’ and glass substrates by RF magnetron sputtering technique. The crystalline structure and phase of...