Number of found documents: 4
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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 - English
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 Keywords: semiconductor devices; nanostructures; sensors Available in a digital repository NRGL
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 ...

Žďánský, Karel; Vaniš, Jan; Černohorský, Ondřej; Kacerovský, Pavel; Fojtík, A.
Ústav fotoniky a elektroniky, 2012

Study of layers of Pd on InP
Černohorský, Ondřej; Žďánský, Karel; Proška, J.
2011 - English
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. Keywords: semiconductor devices; nanostructures; sensors Available in a digital repository NRGL
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 ...

Černohorský, Ondřej; Žďánský, Karel; Proška, J.
Ústav fotoniky a elektroniky, 2011

Complex Cepstrum in Speech Synthesi
Vondra, Martin; Vích, Robert
2010 - English
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. Keywords: speech analysis; speech synthesis Available in a digital repository NRGL
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 ...

Vondra, Martin; Vích, Robert
Ústav fotoniky a elektroniky, 2010

Overview of broadband development in Czech Republic
Hrstka, J.; Kuchar, Anton; Peterka, J.; Slavík, J.
2006 - English
V příspěvku jsou popsány mílníky ve vývoji broadbandu v České republice a průběh analýzy relevantního trhu č. 12 jak jí zpracovával Český telekomunikační úřad. Dále je popsána Národní politika pro vysokorychlostní přístup k Internetu a podpora realizace broadbandových projektů. Jsou uvedeny aktuální údaje o penetraci broadbandových přípojek v ČR a jejich dostupnost. Na závěr jsou diskutovány některé otázky rozvoje broadbandu v ČZ z pohledu spotřebitele. The main milestones in developing broadband in the Czech Republic are described and analysis of the relevant market no. 12 as performed by the Czech Telecommunication Office is commented. National broadband strategy is presented and funding of broadband projects are described. Up-to-date data on broadband penetration and on its availability across the country is given. Some consumer issues are discussed. Keywords: broadband networks; telecommunication networks; vývoj; průzkum trhu Fulltext is available at external website.
Overview of broadband development in Czech Republic

V příspěvku jsou popsány mílníky ve vývoji broadbandu v České republice a průběh analýzy relevantního trhu č. 12 jak jí zpracovával Český telekomunikační úřad. Dále je popsána Národní politika pro ...

Hrstka, J.; Kuchar, Anton; Peterka, J.; Slavík, J.
Ústav fotoniky a elektroniky, 2006

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