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Institute of Physics

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29.01.2019

Copper surfaces influence the growth of copper oxide nanowires

Scientists of the Material Center Leoben, the Department of Material Physics of the Montanuniversitaet Leoben, and Gerhard Popovski of the Institute of Physics have shown that different copper surfaces will influence the growth of copper oxide nanowires. Small copper grains and high surface roughness promote the growth of these important structures, which are used for example in solar cells or sensors.

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22.01.2019

The Shape of Nanocrystals Influences their Optical Performance: Revealed in an open access article in Frontiers of Chemistry

Scientists from the Institute of Physics together with colleagues of the ETH Zürich as well as the ESRF in Grenoble showed recently that the crystal structure of core/shell CdSe/CdS nanocrystals (3.5 -14 nm) influences the particle shape. The particle shape again directly influences the photoluminescence (PL) quantum yield: The “larger”, strongly faceted nanocrystals with dimensions of up to 14 nm and aspect ratios of around 1.7 show the lowest PL output. These results were only possible with combined scattering (anomalous SAXS) and diffraction (WAXS) experiments at the synchrotron ESRF.

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09.10.2018

New paper published in Nature Communications on parameters determining charge storage mechanisms in nanoporous supercapacitors

To improve the performance of supercapacitors, a mechanistic understanding of ion electrosorption is required. In this work we identify parameters like salt concentration, charging velocity or cell design, controlling mechanisms of ion charge storage. Moreover, we show that charging initially leads to a non-equilibrium ion configuration even at extremely low cycling speed, followed by an increase of the total ion concentration, i.e. a charge-neutral equilibration.

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25.09.2018

New paper published in Nanoscale reveals peculiar nano-mechanics of the van der Waals interface between organic nanostructures and 2D materials

Self-assembled and self-alligned organic nanostructures are very interesting building blocks for the future nanoelectromechanics, especially considering an increasing demand to improve, miniaturize, and integrate various sensors into low-power wearable (flexible) applications. Unique nanomechanics that exists on these scales might appear as counter-intuitive in a macroscopic world, and therefore understanding of the underlying mechanisms is a key step in advancement of these technologies.

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09.08.2018

Inside Front Cover in Advanced Materials !

The impact of the paper on "3D colloidal supercrystals" is further illustrated by the fact that is was selected as Inside Front Cover in Volume 30, Issue 32, August 9, 2018 of Advanced Materials

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02.07.2018

New paper on “3D colloidal supercrystals” is published online in Advanced Materials

In this study three Austrian Universities the TU Graz, the Univ. Wien led by the MU Leoben worked together to reveal the supercrystal structure of free standing 3D colloidal supercrystals by combining in-situ synchrotron SAXS experiments at ELETTRA with simulations.

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14.01.2018

Paper on "domain orientation" published in Scientific Reports

In a recently published article in Scientific Reports a method to reconstruct the piezoelectric domain orientation distribution function of device-ready polycrystalline lead zirconate titanate (PZT) is presented.

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20.12.2017

Fonda-Fasella 2017 award to Christian Prehal

For his important contribution to the understanding of ion behavior in supercapacitors, Dr. Christian Prehal was awarded with the Fonda-Fasella prize.

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04.12.2017

Online lecture on "Characterisation of Nanocrystals for Optics and Energy Storage"

Watch the online lecture about the use of X-ray scattering (SAXS/WAXS) on Nanostructures

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04.12.2017

Revealing Stress Gradients in Semiconductor Heterostructures

A research Team from the MU Leoben (Schmidt Institute of Material Physics and Institute of Physics) and Infineon Technologies Austria AG published a paper on "Stress Gradients in Semiconductor Heterostructures" in Applied Physics Letters (APL)

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22.09.2017

Mapping the Atomistic Structure of Colloidal Nanocrystals

Two research teams from the Laboratory for Nanoelectronics (ETH Zurich) and the Institute of Physics (MU Leoben) revealed the atomistic structure and shape of graded core/shell nanocrystals.

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14.09.2017

Paper on “materials farming” published in Science

Scientists from Germany, Israel and Austria have demonstrated for the first time the growth of cotton fibers with integrated fluorescence or magnetism. Physicists from the Institute of Physics at MU Leoben confirmed with X-ray scattering that these functionalities are directly incorporated into the cellulose fibers.

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25.08.2017

Probing charge transfer between molecular semiconductors and graphene

Recently published article in Scientific Reports reveals that the integer charge transfer is the main mechanism behind the band alignment at the interface between graphene and organic semiconductors.

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02.08.2017

Nanoporous Activated Carbon Cloth: a versatile material for energy storage

Scientists from 6 different countries (including scientists form the Chair of Functional Materials and Materials Systems and the Institute of Physics; MU Leoben) investigated the use of nanoporous activated carbon cloth as a material for hydrogen adsorption, selective gas separation and electrochemical energy storage was investigated.

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03.07.2017

New paper about electrosorption induced electrode swelling

In a new paper published in ACS Applied Materials & Interfaces we reveal the impact of micropores on the swelling behavior of carbon based supercapacitor electrodes.

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31.05.2017

New paper published in Physical Chemistry Chemical Physics (PCCP)

A detailed technical description of the recently published in situ SAXS and atomistic modeling approach is given in this paper. In addition an alternative strategy to derive pore size distributions from ex situ SAXS measurements and novel aspects regarding ion kinetics in nanoporous carbon supercapacitors are presented.

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