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Results 61 - 80 of 228.


Chemistry - Physics - 29.09.2021
Molecular burdocks: peptides guide self-assembly on the micrometre scale
Molecular burdocks: peptides guide self-assembly on the micrometre scale
Chemists demonstrate new approach to self-assembly of colloidal nanoparticles Sometimes even small forces can make comparatively big things happen: In a study in "Angewandte Chemie", scientists from the Faculty of Chemistry at the University of Vienna showed how short peptides can trigger the self-assembly of comparatively large nanoparticles into new structures on the micrometre scale.

Chemistry - Mathematics - 28.07.2021
From chemical Graphs To Structures
From chemical Graphs To Structures
Three-dimensional (3D) configurations of atoms dictate all materials properties. Quantitative predictions of accurate equilibrium structures, 3D coordinates of all atoms, from a chemical graph, a representation of the structural formula, is a challenging and computationally expensive task which is at the beginning of practically every computational chemistry workflow.

Physics - Chemistry - 13.07.2021
Electrons in quantum liquid gain energy from laser pulses
Electrons in quantum liquid gain energy from laser pulses
By Christoph Pelzl The absorption of energy from laser light by free electrons in a liquid has been demonstrated for the first time. Until now, this process was observed only in the gas phase. The findings, led by Graz University of Technology, open new doors for ultra-fast electron microscopy. The investigation and development of materials crucially depends on the ability to observe smallest objects at fastest time scales.

Physics - Chemistry - 27.05.2021
It takes some heat to form ice
It takes some heat to form ice
By Susanne Eigner Researchers from TU Graz in Austria and the Universities of Cambridge and Surrey succeeded to track down the first step in ice formation at a surface, revealing that additional energy is needed for water before ice can start to form. Picture material for download at the end of the message Water freezes and turns to ice when brought in contact with a cold surface - a well-known fact.

Life Sciences - Chemistry - 05.05.2021
Tracking down the tiniest of forces: how T cells detect invaders
Tracking down the tiniest of forces: how T cells detect invaders
T cells use their antigen receptors like sticky fingers - a team from TU Wien and MedUni Vienna was able to observe them doing so. 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.

Physics - Chemistry - 29.04.2021
How acidic are atoms?
How acidic are atoms?
The acidity of molecules can be easily determined, but until now it was not possible to measure this important property for atoms on a surface. With a new microscopy technique from the Vienna University of Technology (TU Wien), this has now been achieved. The degree of acidity or alkalinity of a substance is crucial for its chemical behavior.

Physics - Chemistry - 19.04.2021
Understanding Interfaces of Hybrid Materials with Machine Learning
Understanding Interfaces of Hybrid Materials with Machine Learning
By Susanne Eigner Using machine learning methods, researchers at TU Graz can predict the structure formation of functionalized molecules at the interfaces of hybrid materials. Now they have also succeeded in looking behind the driving forces of this structure formation. The production of nanomaterials involves self-assembly processes of functionalized (organic) molecules on inorganic surfaces.

Physics - Chemistry - 23.02.2021
Twin atoms: A source for entangled particles
Twin atoms: A source for entangled particles
Quantum experiments that could previously only be performed with photons are now also possible with atoms: Beams of entangled atoms have been produced at TU Wien (Vienna). Heads or tails? If we toss two coins into the air, the result of one coin toss has nothing to do with the result of the other. Coins are independent objects.

Chemistry - Physics - 22.01.2021
Single atoms as a catalyst: Surprising effects ensue
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 at TU Wien in Vienna, Austria have shown that everything is suddenly different when you arrive at the smallest possible size: a single atom. Metals such as gold or platinum are often used as catalysts.

Chemistry - Physics - 11.01.2021
Catalysts: Worth Taking a Closer Look
Catalysts: Worth Taking a Closer Look
Why do metal oxide surfaces behave differently? At TU Wien, a new research method was found to answer important questions. 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.

Physics - Chemistry - 21.12.2020
The Mechanics of the Immune System
The Mechanics of the Immune System
When T-cells of our immune system become active, tiny traction forces at the molecular level play an important role. They have now been studied at TU Wien. Highly complicated processes constantly take place in our body to keep pathogens in check: The T-cells of our immune system are busy searching for antigens - suspicious molecules that fit exactly into certain receptors of the T-cells like a key into a lock.

Chemistry - 11.12.2020
Mmm, what a 'taste'
Mmm, what a ’taste’
By Mag. Beate Mosing The researchers at the sensory laboratory of the Institute of Analytical Chemistry and Food Chemistry at TU Graz know that "taste" alone is by no means the only decisive factor for culinary enjoyment. "From a scientific point of view, we only distinguish between sweet, sour, salty, bitter and umami in terms of taste.

Chemistry - Materials Science - 08.12.2020
Next Generation Fuel Cell and Hydrogen Technologies
Next Generation Fuel Cell and Hydrogen Technologies
By Sebastian Bock Due to current efforts being made in the reduction of greenhouse gas emissions and the associated political focus on hydrogen as a clean energy carrier, methods for sustainable hydrogen production and efficient utilization are again in great demand. In the coming years, fundamental and industry-related research as well as innovative ideas are essential to meet the ambitious goals with regard to efficiency, service life and sustainability of the whole process chain.

Chemistry - Environment - 08.12.2020
Hydrogen: Electricity Storage of the Future?
By Birgit Baustädter If our energy system is to become more eco-friendly, there is no way to avoid hydrogen as an energy carrier. Researchers around the world are certain of this. Hydrogen is the first element in the periodic table. Not only here does it occupy a prominent place, but also in the discussion about an eco-friendly energy system of the future.

Chemistry - Environment - 05.12.2020
Time for plan A
Time for plan A
By Dr. Daniela Müller Oil, gas and coal were yesterday. Hydrogen could be the key to a green future. Its versatility has made hydrogen a research core area at Graz University of Technology for 50 years. What was that again about hydrogen, symbol H, a chemical element in the periodic table? That made the Hindenburg explode, removes hair dye and powers a few vehicles? Usually very little of what we learnt at school is remembered about it, apart from the oxyhydrogen gas reaction.

Physics - Chemistry - 04.12.2020
Hydrogen Embrittlement (HE)
Hydrogen Embrittlement (HE)
By Andreas Drexler, Hamdi Elsayed, Rudolf Vallant .. of Ultra-High-Strength Steel Screws in Service: Still a Development Potential? Hydrogen embrittlement is a major concern for the automotive, construction, and energy sectors. It limits the use of new ultra-high-strength steels, which have huge advantages in reducing raw material consumption, decreasing fuel consumption, and decreasing carbon dioxide emissions.

Physics - Chemistry - 24.11.2020
Stable Catalysts for New Energy
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. 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.

Materials Science - Chemistry - 12.11.2020
TU Graz launches Christian Doppler Laboratory for Solid-State Batteries
TU Graz launches Christian Doppler Laboratory for Solid-State Batteries
By Susanne Eigner The focus of the new CD laboratory is the reduction of interface resistances within the solid-state battery. The aim is to make this particularly safe energy storage system fit for electric vehicles and other high-energy applications. In recent years, intensive research has been carried out on solid-state electrolytes and materials have been developed which have a similarly high ionic conductivity to liquid electrolytes.

Materials Science - Chemistry - 12.11.2020
TU Graz launches Christian Doppler Laboratory for Solid-State Batteries
TU Graz launches Christian Doppler Laboratory for Solid-State Batteries
The focus of the new CD laboratory is the reduction of interface resistances within the solid-state battery. The aim is to make this particularly safe energy storage system fit for electric vehicles and other high-energy applications. In recent years, intensive research has been carried out on solid-state electrolytes and materials have been developed which have a similarly high ionic conductivity to liquid electrolytes.

Chemistry - 10.11.2020
Sweet taste reduces appetite?
Sweet taste reduces appetite?
The sweet taste of sugar, energy intake and the regulatory process of hunger and satiety To date, very little is known about how sweetness perception contributes to satiety. This study, conducted by an Austrian-German team led by chemists Veronika Somoza and Barbara Lieder, provides new insights into the relationship between the sweet taste of sugar, energy intake and the regulatory process of hunger and satiety.