Chemists investigate the interactions of metal complexes and light Metal complexes show a fascinating behavior in their interactions with light, which for example is utilized in organic light emitting diodes, solar cells, quantum computers, or even in cancer therapy.
The quantum superposition principle has been tested on a scale as never before in a new study by scientists at the University of Vienna in collaboration with the University of Basel.
"An experiment of nature" after the end-Cretaceous mass extinction An international research team led by Giuseppe Marramŕ from the Institute of Paleontology of the University of Vienna discovered a
Scientists use deep neural networks to achieve simulations on long time scales The prediction of molecular reactions triggered by light is to date extremely time-consuming and therefore costly.
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Why is water densest at around 4 degrees Celsius' Why does ice float? Why does heavy water have a different melting point compared to normal water? Why do snowflakes have a six-fold symmetry? A collaborative study of researchers from the École Polytechnique Fédérale de Lausanne, the University of Göttingen and the University of Vienna and just published in the Proceedings of the National Academy of Sciences of the USA, provides physical insights into these questions by marrying data-driven machine learning techniques and quantum mechanics.
In speech and music, words and notes depend on each other. Humans are highly sensitive to such dependencies, but the evolutionary origins of this capacity are poorly understood. Cognitive biologists at the University of Vienna conducted playback experiments with common marmoset monkeys and found that sensitivity to dependencies might have been present in the shared ancestor of marmosets and humans.
[ Florian Aigner "Topological materials" are very interesting for technology, but difficult to study. TU Wien (Vienna) and the University of Science and Technology in China are presenting new approaches. Electrons are not just little spheres, bouncing through a material like a rubber ball. The laws of quantum physics tell us that electrons behave like waves.
[ Florian Aigner At the TU Wien (Vienna), neural networks have been developed which make it much easier to create photorealistic pictures of a wide variety of materials. If computer-generated images are to look realistic, different materials have to be presented differently: The metallic sheen of a coin looks quite different from the dull gloss of a wooden plate or the slightly transparent skin of a grape.
Conventional lithium ion batteries, such as those widely used in smartphones and notebooks, have reached performance limits. Materials chemist Freddy Kleitz from the Faculty of Chemistry of the University of Vienna and international scientists have developed a new nanostructured anode material for lithium ion batteries, which extends the capacity and cycle life of the batteries.
[ Florian Aigner "Frequency combs" are optimally suited for chemical sensors. A revolutionary technology developed at TU Wien (Vienna) now produces these laser frequencies in a much easier and more robust way. Most lasers have only one color. All the photons it emits have exactly the same wavelength.
Joint successes in the past increase the chances of winning. This has now been statistically proven in a variety of different team sports. What makes a team successful? This is not only a crucial question for football coaches, it plays a role in almost all areas of life, from corporate management to politics.
Advances in cellular microscopy: at TU Wien (Vienna), flies were made transparent, so that individual nerve cells, marked with fluorescent molecules, can be examined directly in the animal. The nervous system of an animal can be studied by cutting it up into thin layers - however this inevitably leads to the destruction of the cellular structures in the tissue.
Biochips have been developed at TU Wien (Vienna), on which tissue can be produced and examined. This allows supplying the tissue with different substances in a very controlled way. Cultivating human cells in the Petri dish is not a big challenge today. Producing artificial tissue, however, permeated by fine blood vessels, is a much more difficult task.
Orangutans spontaneously bend straight wires into hooks to fish for food The bending of a hook into wire to fish for the handle of a basket is surprisingly challenging for young children under eight years of age. Now cognitive biologists and comparative psychologists from the University of Vienna, the University of St Andrews and the University of Veterinary Medicine Vienna around Isabelle Laumer and Alice Auersperg studied hook tool making for the first time in a non-human primate species - the orangutan.
When quantum particles swirl about, they still obey universal laws. Different quantum systems can show the same behaviour - this has been demonstrated by two different experiments at TU Wien and Heidelberg University. Some things are so complicated that it is completely impossible to precisely calculate them.
Ribonucleic acid (RNA) is, along with DNA and protein, one of the three primary biological macromolecules and was probably the first to arise in early life forms. In the "RNA world" hypothesis, RNA is able to support life on its own because it can both store information and catalyze biochemical reactions.
Telecommunications is becoming ever more important for vehicles. At TU Wien, a new antenna concept has now been developed for cars. Driving without communication technology has now become almost unthinkable. It seems quite normal to us that navigation systems regularly update their maps and shows us the way using satellite data, or that we can make phone calls while driving.
Novel complex quantum entanglement generated in the laboratory for the first time For future technologies such as quantum computers and quantum encryption, the experimental mastery of complex quantum systems is inevitable. Scientists from the University of Vienna and the Austrian Academy of Sciences have succeeded in making another leap.
How to create nanocages, i.e., robust and stable objects with regular voids and tunable properties' Short segments of DNA molecules are perfect candidates for the controllable design of novel complex structures. Physicists from the University of Vienna, the Technical University of Vienna, the Jülich Research Center in Germany and Cornell University in the U.S.A., investigated methodologies to synthesize DNA-based dendrimers in the lab and to predict their behavior using detailed computer simulations.
Ethanol can make an important contribution to climate protection: at TU Wien, a diesel engine has been developed that can run on over 70% bioethanol. TU Wien has developed an engine that uses two different types of fuel simultaneously: it uses both bioethanol and diesel, which is used for ignition. A special duel-fuel combustion process has been developed for this purpose, which now enables the use of a large proportion of bioethanol in diesel engines.
A new conjecture causes excitement in the string theory community. Timm Wrase of the Vienna University of Technology has now published much-discussed results on recent new developments. In string theory, a paradigm shift could be imminent. In June, a team of string theorists from Harvard and Caltech published a conjecture which sounded revolutionary: String theory is said to be fundamentally incompatible with our current understanding of "dark energy" - but only with "dark energy" can we explain the accelerated expansion of our current universe.
Astrophysicists calculate the impact probability and crater size of impacts due to minor bodies The astrophysicists Mattia Galiazzo and Rudolf Dvorak from the University of Vienna, in collaboration with Elizabeth A. Silber (Brown University, USA) investigated the long-term path development of Centaurs (solar system minor bodies which originally have orbits between Jupiter and Neptune).
Plants start growing earlier in the spring but, contrary to popular belief, this results in less CO2 absorption. Climate change influences plant growth, with springtime growth beginning earlier each year. Up to now, it was thought that this phenomenon was slowing climate change, as scientists believed this process led to more carbon being absorbed from the atmosphere for photosynthesis and more biomass production.
A new, extremely promising microscopy technique called "Nanomechanical scanning absorption microscopy" has been developed at TU Wien, in which sound is measured instead of light. Individual molecules cannot be photographed - if you wish to visualise objects that are smaller than the wavelength of light, you'll need a few special tricks up your sleeve.