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New Material Breaks World Record Turning Heat into Electricity

15-Nov-2019

A new type of material generates electrical current very efficiently from temperature differences. This allows sensors and small processors to supply themselves with energy wirelessly. Thermoelectric materials can convert heat into electrical energy. This is due to the so-called Seebeck effect: ...

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Solving the Mystery of Quantum Light in Thin Layers

17-Oct-2019

A very special kind of light is emitted by tungsten diselenide layers. The reason for this has been unclear. Now an explanation has been found at TU Wien (Vienna). It is an exotic phenomenon that nobody was able to explain for years: when energy is supplied to a thin layer of the material ...

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Milestones on the Way to the Nuclear Clock

Two research teams have succeeded simultaneously in measuring the long-sought Thorium nuclear transition

13-Sep-2019

If you want to build the most accurate clock in the world, you need something that “ticks” very fast and extremely precise. In an atomic clock, electrons are used, which can be switched back and forth between two different states in a very precisely defined way. Even more precise, however, would ...

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Single atoms as catalysts

03-Sep-2019

Incorporating individual metal atoms into a surface in the right way allows their chemical behavior to be adapted. This makes new, better catalysts possible. They make our cars more environmentally friendly and they are indispensable for the chemical industry: catalysts make certain chemical ...

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Switching electron properties on and off individually

23-Aug-2019

Properties of complex materials are often determined by the interplay of several electron properties. TU Wien (Vienna) has now succeeded in disentangling this mess. Only at extremely low temperatures does order prevail. At the Vienna University of Technology, materials are cooled to almost ...

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How to Freeze Heat Conduction

25-Feb-2019

Physicists have discovered a new effect, which makes it possible to create excellent thermal insulators which conduct electricity. Such materials can be used to convert waste heat into electrical energy. Every day we lose valuable energy in the form of waste heat - in technical devices at home, ...

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Quantum Tricks to Unveil the Secrets of Topological Materials

02-Jan-2019

"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 ...

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Novel Laser Technology for Microchip-Size Chemical Sensors

12-Dec-2018

"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. However, ...

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Better Imaging Using Sound

A microscopy technique in which sound is measured instead of light.

28-Sep-2018

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. You can use electron microscopes for example, or determine the position of specific fluorescent molecules by taking a ...

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Superradiance: Quantum Effect Detected in Tiny Diamonds

05-Sep-2018

Under certain conditions, an atom can cause other atoms to emit a flash of light. At TU Wien (Vienna), this quantum effect has now been measured. The effect has been predicted theoretically decades ago - but it is very hard to provide experimental evidence for it: "Superradiance" is the ...

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