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Physics - 14:34
Learning about Quantum Vacuum by Studying Atoms
Learning about Quantum Vacuum by Studying Atoms
The Unruh-effect connects quantum theory and relativity. Until now, it could not be measured. A new idea could change this - in a completely different way than ever before. Is the vaccum really empty? Not necessarily. This is one of the strange results obtained by connecting quantum theory and the theory of relativity: The Unruh effect suggests that if you fly through a quantum vacuum with extreme acceleration, the vacuum no longer looks like a vacuum: rather, it looks like a warm bath full of particles.

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.

Physics - Materials Science - 23.11.2020
Laser technology: New Trick for Infrared Laser Pulses
Laser technology: New Trick for Infrared Laser Pulses
Infrared light can be used to detect molecules - but it is hard to create strong, short laser pulses. A new solution was found at TU Wien. Ordinary solid-state lasers, as used in laser pointers, generate light in the visible range. For many applications, however, such as the detection of molecules, radiation in the mid-infrared range is needed.

Physics - Materials Science - 10.11.2020
Sticky Electrons: When Repulsion turns into Attraction
Sticky Electrons: When Repulsion turns into Attraction
For years, physicists at TU Wien have been studying strange phenomena - now they have found an explanation that could help to understand unconventional types of superconductivity. Materials can assume completely different properties - depending on temperature, pressure, electrical voltage or other physical quantities.

Computer Science - Physics - 12.10.2020
When human and machine agree
When human and machine agree
A human research team and a machine learning algorithm have found that we need to rethink much of what we know about iridium oxide.

Materials Science - Physics - 07.10.2020
New findings pave the way to environmentally friendly supercapacitors
New findings pave the way to environmentally friendly supercapacitors
Similar to batteries, supercapacitors are suitable for the repeated storage of electrical energy. TU Graz researchers have presented a particularly safe and sustainable variant of such a supercapacitor. Harald Fitzek, Christian Prehal and Qamar Abbas (from left) at the SAXS facility SAXSpoint 2.0 (Anton Paar GmbH): With their work at Graz University of Technology, the researchers are providing new insights into hybrid supercapacitors.

Astronomy / Space Science - Physics - 22.09.2020
Gravity causes homogeneity of the universe
Gravity causes homogeneity of the universe
"During its expansion, the universe evolved towards its present state, which is homogeneous and isotropic on large scales. This is inferred, among other things, from the measurement of the so-called background radiation as nicely seen in the full sky image of the WMAP data.

Chemistry - Physics - 22.09.2020
New Materials: A Toggle Switch for Catalysis
New Materials: A Toggle Switch for Catalysis
Electrochemical reactions, which will play an important role in the future of energy supply, can now be explained in detail, thanks to measurements carried out by TU Wien and DESY. 1/4 images The elektrochemistry team at TU Wien: Andreas Nenning, Harald Summerer, Alexander Opitz (left to right) (Copyright: TU Wien) 1/4 images The elektrochemistry team at TU Wien: Andreas Nenning, Harald Summerer, Alexander Opitz (left to right) (Copyright: TU Wien) 1/4 images A Perovskite thin film electrode, on a ZrO2 crystal - compared to a pen.

Physics - Electroengineering - 14.09.2020
Physicists Discover New Magnetoelectric Effect
Physicists Discover New Magnetoelectric Effect
In a very unusual way, the electrical and magnetic properties of a particular crystal are linked together - the phenomenon was discovered and explained at TU Wien (Vienna). Electricity and magnetism are closely related: Power lines generate a magnetic field, rotating magnets in a generator produce electricity.

Physics - Materials Science - 31.08.2020
Attention, the electron is too fast!
Attention, the electron is too fast!
Why do different measurements of material properties sometimes give different results? A research team led by the TU Vienna has now found an important answer. It is very hard to take a photo of a hummingbird flapping its wings 50 times per second. The exposure time has to be much shorter than the characteristic time scale of the wing beat, otherwise you will only see a colorful blur.

Physics - Chemistry - 27.08.2020
Quantum Simulation of Quantum Crystals
Quantum Simulation of Quantum Crystals
International research team describes the new possibilities offered by the use of ultracold dipolar atoms The quantum properties underlying crystal formation can be replicated and investigated with the help of ultracold atoms. A team led by Dr. Axel U. J. Lode from the University of Freiburg's Institute of Physics has now described in the journal Physical Review Letters how the use of dipolar atoms enables even the realization and precise measurement of structures that have not yet been observed in any material.

Physics - Materials Science - 03.08.2020
The Art of Making Tiny Holes
The Art of Making Tiny Holes
How can you perforate an atomic layer of material and leave the one underneath intact? Scientists at TU Wien (Vienna) developed a technique for processing surfaces on an atomic scale. Nobody can shoot a pistol bullet through a banana in such a way that the skin is perforated but the banana remains intact.

Physics - Chemistry - 30.07.2020
TU Graz Researchers synthesize nanoparticles tailored for special applications
TU Graz Researchers synthesize nanoparticles tailored for special applications
"Core-shell" clusters pave the way for new efficient nanomaterials that make catalysts, magnetic and laser sensors or measuring devices for detecting electromagnetic radiation more efficient. Additional images for download can be found at the end of the message Whether in innovative high-tech materials, more powerful computer chips, pharmaceuticals or in the field of renewable energies, nanoparticles - smallest portions of bulk material - form the basis for a whole range of new technological developments.

Chemistry - Physics - 08.07.2020
Graphene: It is all about the toppings
Graphene: It is all about the toppings
To fully exploit the potential of the "wonder material" graphene, it has to be combined with other materials. A new study investigates what is important for this. Graphene consists of a single layer of carbon atoms. Exceptional electronic, thermal, mechanical and optical properties have made graphene one of the most studied materials at the moment.

Physics - 03.07.2020
A new way towards super-fast motion of vortices in superconductors discovered
A new way towards super-fast motion of vortices in superconductors discovered
An international team of scientists from Austria, Germany and Ukraine has found a new superconducting system in which magnetic flux quanta can move at velocities of 10-15 km/s. This opens access to investigations of the rich physics of non-equilibrium collective systems and renders a direct-write Nb-C superconductor as a candidate material for single-photon detectors.

Physics - Materials Science - 01.07.2020
Magnonic nano-fibers opens the way towards new type of computers
Magnonic nano-fibers opens the way towards new type of computers
Magnetism offers new ways to create more powerful and energy-efficient computers, but the realization of magnetic computing on the nanoscale is a challenging task. A critical advancement in the field of ultralow power computation using magnetic waves is reported by a joint team from Kaiserslautern, Jena and Vienna in the journal Nano Letters.

Physics - 18.06.2020
Laser technology: The Turbulence and the Comb
Laser technology: The Turbulence and the Comb
A particularly well-ordered kind of laser light can be created by turbulence, which is usually responsible for very disordered phenomena. It is a very special kind of light, which can be used for important measurements: so-called frequency combs play a major role in laser research today. While the light of an ordinary laser only has one single, well-defined wavelength, a frequency comb consists of different light frequencies, which are precisely arranged at regular distances, much like the teeth of a comb.

Life Sciences - Physics - 20.05.2020
Breaking down stubborn cellulose in time lapse
Breaking down stubborn cellulose in time lapse
Researchers at TU Graz in Austria have for the first time ever succeeded in visualizing at the single-molecule level the processes involved in a biological nanomachine, known as the cellulosome, as it degrades crystalline cellulose. The fundamental insights thus obtained could support sustainable concepts of cellulose utilization to make a breakthrough in industrial biotechnology.

Chemistry - Physics - 19.05.2020
Nature Unveiling Herself Before Science
Nature Unveiling Herself Before Science
Cutting-edge technology allows for real-time monitoring of biomineralisation as an important process of bone formation 21st century societal challenges such as demographic developments and an ageing population demand for new functional materials, such as for bone prostheses. Nature often serves as inspiration when designing these materials.

Physics - Materials Science - 05.05.2020
Less gold is Sometimes Better
Less gold is Sometimes Better
Using an ultra-thin gold layer, scientists at TU Wien (Vienna) succeeded in creating an almost optimal infrared absorber. Possible applications range from astrophysics to virus detection. Infrared detectors play an important role in research: many molecules absorb electromagnetic radiation in the infrared range in a very characteristic way.
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