Friday 29 April 2016      SE RZ03062

Introduction
Peter Pölt - Reinhard Alkofer

Porous Nanophase Metals with Electrochemically Tunable Properties
Eva-Maria Steyskal, Institut für Materialphysik

Nanoporous metals produced by dealloying, an (electro-)chemical process in which the less noble component is removed from a master alloy by selective etching [1], find application in various fields of research such as sensing, energy storage, or (electro-)catalysis. The extraordi ... more

Plasmon resonance shifts due to a dielectric tip
Markus Krug, Institute of Physics, University of Graz

Metal nanoparticles sustain localized surface plasmon resonances in the visible or near-infrared spectral range. Their spectral positions are set by the optical constants of the metal, the particle geometry and the dielectric environment. Plasmon resonance fields are highly ... more

Tuesday 28 June 2016      KFU

Introduction
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Aluminium in plasmonics - an approach to enhanced white OLED emission
Veronika Tretnak, Karl Franzens Universität Graz, Institut für Physik

Organic light emitting diods (OLEDs), already present in several fields of our daily life, lag behind their inorganic counterparts when it comes to efficiency. An approach to overtake the LEDs, plasmonic particles can be used. In these nanoparticles (NPs) smaller than the wavelen ... more

Ab-Initio thermoelasticity and the physical origin of the anomalous thermal expansion in W-Re alloys
Thomas Dengg, KFU Graz; Materials Center Leoben Forschung GmbH

Accurate calculations of the thermal expansion coefficient (CTE) from first-principles with explicit treatment of lattice vibrations are nowadays widely used. However, simpler models like the Debye-Grüneisen (DG) model are highly appreciated for reducing computational cost and m ... more

Ab initio modeling of diffusion in solids. Cu impurity diffusion in TiN
Anton Bochkarev, Karl Franzens University Graz, Materials Center Leoben Forschung GmbH

Diffusion process in solids is an important phenomena which may affect various material properties, for instance mechanical properties, phase transformations, aging process. Diffusion of impurities may degrade quality of materials, especially semiconductors. The material microstr ... more

Pause

Coupling quantum dots to plasmonic nanowires
Martin Belitsch , University of Graz

Semiconducting quantum dots (QDs) are stable single photon sources with fluorescence emission wavelengths that are tunable throughout the whole visible spectrum. Through coupling to plasmonic structures characteristic QD properties such as emission rate, emission intensity, radia ... more

Grain boundary segregation and cohesion in tungsten and molybdenum
Daniel Scheiber, Karl Franzens University Graz, Materials Center Leoben Forschung GmbH

Grain boundaries (GBs) have a high impact on material science: as defects in the crystal structure found in every metal, they tend to worsen many material properties. Some of those properties are i.e. electrical and thermal conductivity, toughness, creep, corrosion and strength. ... more

Photoconductivity of Colloidal Quantum Dots
Marija Gasparic, University of Graz

The coupling of single photon emitters like a quantum dot (QD) and a metal nanoparticle (MNP) gives us the possibility to investigate light matter interaction in detail. Our investigation is focused on developing a plasmon enhanced photodetector using a (single) QD and MNPs. Ther ... more

Friday 03 February 2017      HS 05.01, KFU, Physikgebäude, Univ.-platz 5

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