Graphite/n-InP Schottky barrier with electrophoretically deposited Pt nanoparticles for hydrogen and nitrogen-monoxide detection
Žďánský, Karel; Vaniš, Jan; Černohorský, Ondřej; Kacerovský, Pavel; Fojtík, A.
2012 - anglický
N-type InP was deposited with Pt nanoparticles (NPs) by electrophoresis. The Pt NPs density was varied from a tenth of monolayer to several monolayers. Schottky contacts were made by colloidal graphite on the InP wafer site covered with Pt NPs. It was observed that H2 was detected by an increase of the current while NO was detected by its decrease. For explanation, we discuss mechanism which involves negative charging of adsorbed H atoms with electrons by increasing affinity level due to correlation efects
Klíčová slova:
semiconductor devices; nanostructures; sensors
Plné texty jsou dostupné v digitálním repozitáři NUŠL
Graphite/n-InP Schottky barrier with electrophoretically deposited Pt nanoparticles for hydrogen and nitrogen-monoxide detection
N-type InP was deposited with Pt nanoparticles (NPs) by electrophoresis. The Pt NPs density was varied from a tenth of monolayer to several monolayers. Schottky contacts were made by colloidal ...
Study of layers of Pd on InP
Černohorský, Ondřej; Žďánský, Karel; Proška, J.
2011 - anglický
Pd nanoparticles were prepared in colloid solution stabilized by AOT. The layers were prepared by electrophoretic deposition through the mask of polystyrene spheres. SEM measurement showed that particles in colloid solution are separated and after deposition they form small aggregates on InP. The size of these aggregates depends on the time of deposition. I-V characteristics were measured and then Schottky barrier height and ideality factor were calculated. The morphology of layers was monitored by SEM.
Klíčová slova:
semiconductor devices; nanostructures; sensors
Plné texty jsou dostupné v digitálním repozitáři NUŠL
Study of layers of Pd on InP
Pd nanoparticles were prepared in colloid solution stabilized by AOT. The layers were prepared by electrophoretic deposition through the mask of polystyrene spheres. SEM measurement showed that ...
Complex Cepstrum in Speech Synthesi
Vondra, Martin; Vích, Robert
2010 - anglický
In the contribution the use of the complex cepstrum in speech modeling and synthesis is shortly described. The obtained mixed phase parametric speech model is of the finite impulse response type and contains also information about the phase properties of the modeled speech frame. The synthesized speech is more natural, but the memory requirements and numerical complexity are much higher than for minimum phase realization.
Klíčová slova:
speech analysis; speech synthesis
Plné texty jsou dostupné v digitálním repozitáři NUŠL
Complex Cepstrum in Speech Synthesi
In the contribution the use of the complex cepstrum in speech modeling and synthesis is shortly described. The obtained mixed phase parametric speech model is of the finite impulse response type and ...
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