Fyzikální ústav Akademie věd ČR

Hlavní nabídka

Krátké zprávy

Významný objev ve fyzice top kvarku

4. ročník grantové soutěže NFN

Na Slovensku vyšla známka s motivem funkce crenel

Doktorand Miroslav Myška získal Cenu rektora ČVUT

Ocenění doktoranda L. Ondiče na významné mezinárodní konferenci

FZÚ v médiích

O projektu LABONIT v pořadu Leonardo

Český rozhlas Leonardo, 28.2.2014.

V pondělním Magazínu...

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Rozhovor s prof. Bedřichem Velickým

Nadační fond Neuron, 10.2.2014.

Profesor Velický vybudoval a...

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Na stopě vzniku života

Videokanál Střediska společných činností Akademia věd ČR, 3.2.2014....

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Kdo ovládá magnet? Světlo!

21. století, 20.1.2014.

Českým fyzikům se pomocí světelného...

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Semináře

Chemical sensing by graphene field effect transistors

Úterý, 04.03.2014 10:00 - 11:00

Jiří Červenka (School of Physics, The University of Melbourne)

Graphene's two dimensional nature, highly sensitive unique electrical properties and low intrinsic noise characteristics make it a prime candidate for the creation of a new generation of molecular sensors. Despite of high sensitivity of graphene sensors, their selectivity remains a major problem for their practical use. In this talk I present different strategies for selective sensing using graphene-based sensors.

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Magnetic properties of single molecules and metal-organic networks on surfaces

Úterý, 04.03.2014 13:00 - 14:00

Katharina J. Franke (Freie Universität Berlin)

The magnetic properties of atoms and molecules on a surface are significantly affected by details in the atomic-scale surrounding. Manipulation of this surrounding provides the possibility to tune the electronic and magnetic functionality of surfaces on a nanometer scale. Using scanning tunnelling spectroscopy (STS), we show that the lifetime of excited spin states in the paramagnetic Fe-Octaethylporphyrin-Chloride (FeOEP-Cl) is orders of magnitude longer when the molecule is adsorbed on a superconductor as compared to a normal metal substrate.

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Calculating ultrafast magnetization dynamics

Úterý, 04.03.2014 15:00

Karel Carva (Oddělení teoretické fyziky, katedry fyziky kondenzovaných látek, MFF UK)

Abstract: In recent years it has been demonstrated that magnetization can be changed without applying an external magnetic field in extremely short timescales of the order of hundreds of femtoseconds [1]. We have studied the effect by means of ab initio calculations for three ferromagnetic metals Fe, Co and Ni [2] considering the Elliott-Yafet electron-phonon spin-flip (SF) scattering [3] which has been suggested to be the dominant microscopic mechanism.

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The role of electrochemistry in semiconductor growth and degradation

Čtvrtek, 06.03.2014 10:00 - 11:00

Kristin Poduska (Department of Physics and Physical Oceanography Memorial University of Newfoundland, Canada)

Electrochemical methods are widely applied to metal film deposition in industrial and high-tech settings, but the market share for semiconductor films produced using electrochemistry is dramatically less. At the same time, a large fraction of semiconductor-based devices rely on applied voltages for their operation, which means that electrochemical processes could occur in these devices wherever there exists an interface between an electron conductor (such as a semiconductor) and an ion conductor (such as water).

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Minulé semináře


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
Ausrine Bartasyte	Raman spectroscopy and X-ray diffraction studies of oxide thin films	23.07.2009 10:00
Samuel Margueron	Raman spectroscopy of GaN quantum dots and GaN/sapphire circular pillars	21.07.2009 10:00
Nina Podoliak	Theoretical modelling of ferromagnetic nanomaterials based on liquid crystals	04.06.2009 10:00
Jean-François Legrand	Onset of the -relaxation in LiCl-6H2O by Brillouin scattering techniques	07.05.2009 10:00
Marina Tyunina	Relaxor Ferroelectric Thin Films	05.05.2009 10:00
Paweł Perkowski	The analysis of methods for elimination of high frequency dielectric losses in ITO cells	30.04.2009 10:00
Hiroko Yokota	Polar state and critical behavior in quantum relaxor Li doped KTaO3	17.04.2009 09:00
Yoshiaki Uesu	Peculiar physical properties of ferroelectric superlattice thin films	16.04.2009 15:00
Lubor Lejček	Pozoruhodný svět topologických poruch	17.03.2009 10:00
	Databáze minulých seminářů (1995-2009)	01.01.2008 00:03