Fyzikální ústav Akademie věd ČR

Semináře

Silicon-Silicide nanocomposite heterostructures for Silicon based photonics, opto- and thermoelectronics

Úterý, 06.05.2014 13:00 - 13:30

Prof. Nikolay Galkin (Institute of Automation and Control Processes of FEB RAS, 5 Radio Str., 690041, Vladivostok, Russia)

In presented report short review of nanocomposite structure formation based on embedded nanocrystallites of semiconductor silicides of Fe, Cr, Mg, Mn, Ca in the monocrystalline and poycrystalline silicon in silicon and their electrical and optical properties have been presented. It was shown that b-FeSi2 and CrSi2 NCs with sizes (5-20 nm) have a strained crystal structure with lattice constants on 1.0 – 2.5% smaller than those for the bulk silicides.

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Příprava a charakterizace vybraných uhlíkových nano-struktur

Úterý, 06.05.2014 13:30 - 14:00

Oleg Babchenko (Fyzikální ústav AV ČR, v.v.i., oddělení Optických materiálů)

Přednáška bude věnovaná výsledkům badatelské práce, které zahrnují:

  • Výzkum vlivu různých druhů nukleace na růst tenkých diamantových vrstev pomoci depozice z plynné fáze (CVD) v mikrovlnném výboji. A také, související s předchozím průzkum selektivního růstu diamantových struktur;
  • Růst souvislých a porézních poly- a nano-krystalických diamantových vrstev ve dvou různých depozičních zařízeni.

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Non-adiabatic molecular dynamics with electron transitions

Úterý, 06.05.2014 15:00

Vladimír Zobač (Department of Thin Films and Nanostructures, FZÚ AV ČR, v.v.i.)

Abstract: Non-adiabatic molecular dynamics provides an important tool for the study of photochemical reactions, which has potential application in many fields. Non-adiabatic molecular dynamics is rapidly developing field of research and various non-adiabatic methods based on quantum or classical trajectories were developed. One of the most commonly used method is trajectory surface hopping method, which offer an interesting compromise between accuracy and efficiency for the simulation of large-scales molecular systems.

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A STM approach to molecular conductance and the properties of ZnO

Úterý, 06.05.2014 15:00 - 16:00

Richard Berndt (Institut für Experimentelle und Angewandte Physik, Christian-Albrechts-Universität zu Kiel, Germany)

The electron transport through single molecules and atoms as well as molecule--molecule contacts is investigated with low-temperature scanning probe microscopy. In the experiments, which aim at maximizing the control over the junction properties, the conductance, the acting forces and the emission of photons are probed. The talk will initially address the role of molecular structure and bonding as well as quantum noise properties. In a second part, I will present some recent results on the structure of the ZnO(0001) surface and the spectroscopy of subsurface donors.

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Physics behind 100J/10Hz laser for new scientific applications

Středa, 21.05.2014 15:00

Antonio Lucianetti (Fyzikální ústav AV ČR, v. v. i.)

High-energy-class diode-pumped solid-state lasers are being developed worldwide for new scientific and industrial applications, including particle acceleration, intense X-ray generation and inertial confinement fusion. Traditional efforts to scale the output energy of solid-state lasers have led to undesirable beam-quality degradation.

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Minulé semináře
F. Hakl, M. Jiřina (Ústav informatiky AV ČR) Možnost separace fyzikálního procesu v LHC metodami NNSU a DME 12.03.2010 13:30
František Máca Magnetic order in the ultrathin iron film on the Ir(001) surface 09.03.2010 15:00
Petříček, Dušek, Palatinus The Third Ad Hoc Workshop on Jana2006 08.03.2010 09:00
Liviu P. Zarbo, FZÚ AV CR, v.v.i. a Texas A&M University Semiclassical Monte Carlo Simulation of Transport in Spintronic Devices 03.03.2010 09:00
Dr. Tomáš Novotný, Katedra fyziky kondenzovaných látek, MMF UK Phonon-Assisted Current Noise in Molecular Junctions 02.03.2010 15:00
Branislav K. Nikolić, Dept. of Physics and Astronomy & Center for Spintronics and Biodetection, University of Delaware Spin pumping in magnetic tunnel junctions and topological insulators: Theory and experiments 25.02.2010 10:00
Dr. Roman Martoňák, Katedra experimentálnej fyziky FMFI UK Bratislava Simulácia štruktúrnych fázových prechodov v kryštáloch pomocou metadynamiky 23.02.2010 10:00
André Perrin Ferroelectric KTa1-xNbxO3 Thin Film for Telecom Applications 16.02.2010 10:00
Libor Juha Unikátní stavy hmoty vytvářené intenzivním rentgenovým zářením 10.02.2010 15:00
M.Spousta, P. Řezníček, M. Marčišovský, O.Kepka První jety v datech, Monitorování b-triggeru, Dimionový kanál, Minimum bias interakce (experiment ATLAS) 05.02.2010 13:30
prof. Stuart Lindsay, Biodesign Institute, Arizona State University Can we exploit quantum mechanics to read genes? 04.02.2010 15:00
Jan Kuneš From Clusters to Crystals: Application of the Dynamical Mean-Field Theory to Materials 02.02.2010 15:00
Marek Taševský Status projektu AFP- ATLAS Forward Physics 29.01.2010 13:30
Milan Vaněček Fotovoltaická přeměna sluneční energie 20.01.2010 15:00
Petříček, Dušek, Palatinus The Second Ad Hoc Workshop on Jana2006 18.01.2010 09:00
Jan Böhm Upgrade Vnitřního detektoru ATLAS 15.01.2010 13:30
Jan Rusz Dynamical screening effects in X-ray absorption spectra of graphene and BN 05.01.2010 15:00
Dr. Pavel Kocan Povrch Si(111) před a po desorpci thallia 15.12.2009 15:00
Dawei Wang Dielectric responses of Pb(Zr,Ti)O3 from first principles in the terahertz frequency range 10.12.2009 10:00
Narayani Choudhury Unusual phenomena in compositionally modulated BST systems 08.12.2009 10:00
Petříček, Dušek, Palatinus First ad hoc workshop on Jana2006 07.12.2009 09:00
Timo Jacob (Institut für Elektrochemie, Universität Ulm,Germany) Fundamentals of the Oxygen Reduction Reaction 27.11.2009 10:30
Pavel Bakule Material studies with spin polarized muons as magnetic microprobes 24.11.2009 10:00
Wolfgang Braun In situ synchtrotron x-ray diffraction analysis of molecular beam epitaxy growth 30.10.2009 10:00
Vilgelmina Stepkova Second Quantization of Mixed States of Luminophore Molecule and Small metal particle 27.10.2009 10:00
Wojciech Kuczynski Behaviour of helical structure in some chiral smectic C* liquid crystals 15.10.2009 10:00
Martin Žonda Phase transitions in the three-dimensional Falicov-Kimball model 29.09.2009 15:00
Simonas Grecius Simultaneous permittivity and permeability measurements of multiferroics using coaxial line techniques 22.09.2009 10:00
Dr. Dieter van den Bleeken, Rutgers Univ. (USA) Counting multicenter BPS states in N=2 supergravity 14.09.2009 14:30
Patrick Bruno, European Synchrotron Radiation Facility, Grenoble, France Exchange interactions in magnetic systems: From bulk through multilayers to nanostructures (Mach Medal Lecture) 09.09.2009 15:00

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