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29 Current news of TU Wien
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Anchoring single atoms
How can single atoms be used for catalysis? Researchers develop a new method to anchor single atoms to supports
01-Sep-2021
There is a dictum to “never change a running system”. New methods can however be far superior to older ones. While to date chemical reactions are mainly accelerated by catalytic materials that comprise several hundreds of atoms, the use of single atoms could provide a new approach for ...
New Biochip Technology for Pharma Research
Reliable standard for tissue samples
28-May-2021
In pharmaceutical research, small tissue spheres are used as mini-organ models for reproducible tests. TU Wien has found a way to develop a reliable standard for these tissue samples. Before drugs are tested in clinical trials, they must be tested either by animal experiments or, more recently, ...
Nanoparticles: The Complex Rhythm of Chemistry
Nanoparticles are often used as catalysts. The chemical reactions on their surface are more complex than previously thought
26-May-2021
Most of commercial chemicals are produced using catalysts. Usually, these catalysts consist of tiny metal nanoparticles that are placed on an oxidic support. Similar to a cut diamond, whose surface consists of different facets oriented in different directions, a catalytic nanoparticle also ...
Tracking down the tiniest of forces: how T cells detect invaders
T cells use their antigen receptors like sticky fingers - a research team was able to observe them doing so
06-May-2021
T-cells play a central role in our immune system: by means of their so-called T-cell receptors (TCR) they make out dangerous invaders or cancer cells in the body and then trigger an immune reaction. On a molecular level, this recognition process is still not sufficiently understood. Intriguing ...
The indestructible light beam
Researchers create special light waves that can penetrate even opaque materials as if the material was not even there
14-Apr-2021
Why is sugar not transparent? Because light that penetrates a piece of sugar is scattered, altered and deflected in a highly complicated way. However, as a research team from TU Wien (Vienna) and Utrecht University (Netherlands) has now been able to show, there is a class of very special light ...
Single atoms as a catalyst: Surprising effects ensue
For years, the metal nanoparticles used in catalysts have been getting smaller and smaller. Now, a research team have shown that everything is suddenly different when you arrive at the smallest possible size: a single atom
26-Jan-2021
Metals such as gold or platinum are often used as catalysts. In the catalytic converters of vehicles, for example, platinum nanoparticles convert poisonous carbon monoxide into non-toxic CO2. Because platinum and other catalytically active metals are expensive and rare, the nanoparticles involved ...
Why do metal oxide surfaces behave differently?
New research method answers important questions
15-Jan-2021
Metal surfaces play a role as catalysts for many important applications - from fuel cells to the purification of car exhaust gases. However, their behaviour is decisively affected by oxygen atoms incorporated into the surface. This phenomenon has been known for a long time, but until now it has ...
Stable Catalysts for New Energy
Crucial new technologies such as hydrogen production or carbon capture require new catalysts. Experiments show: It's not just the material that matters, but also its atomic surface structure
26-Nov-2020
On the way to a CO2-neutral economy, we need to perfect a whole range of technologies - including the electrochemical extraction of hydrogen from water, fuel cells, or carbon capture. All these technologies have one thing in common: they only work if suitable catalysts are used. For many years, ...
The Surprising Stretching Behaviour of DNA
What happens when you pull a DNA molecule? It behaves quite differently than we are used to from macroscopic objects
06-Aug-2020
When large forces, for example in bridge construction, act on a heavy beam, the beam will be slightly deformed. Calculating the relationship between forces, internal stresses and deformations is one of the standard tasks in civil engineering. But what happens when you apply these considerations ...
How to teach gold to tell left from right
Chemist from the TU Wien was awarded an Elise-Richter scholarship: She is conducting research in catalysis with ultra-small gold clusters
17-Jul-2020
Nanometer-sized gold particles consisting of only a few atoms can be used as catalysts for important chemical reactions. Noelia Barrabés from the Institute of Materials Chemistry at TU Wien has been researching new methods of adapting and precisely controlling such tiny gold clusters for years. ...
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