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When quantum particles fly like bees

Quantum simulator provides insights into the dynamics of complex quantum systems

16-May-2022

A quantum system consisting of only 51 charged atoms can assume more than two quadrillion different states. Calculating the system's behavior is a piece of cake for a quantum simulator. Yet even with today's supercomputers it is almost impossible to verify the result. A research team from the ...

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A chemical reactor has been invented that can store energy without loss for months

The energy can then be used for heating in winter

11-May-2022

Storing energy over the long term is arguably the biggest unsolved problem of the energy transition. A new type of chemical heat storage system has now been invented at TU Wien (Vienna) that can store large amounts of energy in an environmentally friendly way for a virtually unlimited period of ...

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Glimpse inside a graphene sandwich

In the search for novel types of superconductors scientists are investigating materials that consist of multiple layers

29-Apr-2022

A team led by theoretical physicist Mathias Scheurer from the University of Innsbruck, Austria, has studied in detail the properties of a system of three twisted graphene layers and gained important insights into its properties. Since the first successful fabrication of a two-dimensional ...

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Microcavities as a sensor platform

New concept for a high-precision quantum sensor

08-Apr-2022

Sensors are a pillar of the Internet of Things, providing the data to control all sorts of objects. Here, precision is essential, and this is where quantum technologies could make a difference. Researchers in Innsbruck and Zurich are now demonstrating how nanoparticles in tiny optical resonators ...

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The platinum riddle

How a chemical reaction takes place that, at first glance, should not be possible at the temperatures observed

05-Apr-2022

What happens when a cat climbs onto a sunflower? The sunflower is unstable, will quickly bend, and the cat will fall to the ground. However, if the cat only needs a quick boost to catch a bird from there, then the sunflower can act as a "metastable intermediate step". This is essentially the ...

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Quantum sensors: Measuring even more precisely

Better measurements with little extra effort

25-Mar-2022

Two teams of physicists led by Peter Zoller and Thomas Monz at the University of Innsbruck, Austria, have designed the first programmable quantum sensor, and tested it in the laboratory. To do so they applied techniques from quantum information processing to a measurement problem. The innovative ...

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Why some bubbles move faster

Why do large gas bubbles in viscoelastic liquids rise so much faster than expected?

07-Mar-2022

An open question with great relevance for industrial production processes. Researchers at TU Graz and TU Darmstadt have now found an explanation. It is a puzzle long known among experts and very relevant in many industrial production processes: a jump discontinuity in the rise velocity of gas ...

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Donuts and laser beams

In materials research, considerable progress is made by exploiting insights from the field of topology: Similar tools can now be applied to lasers

01-Mar-2022

A donut is not a bun. From a mathematical point of view, they are two fundamentally different objects: The donut has a hole, the bun does not. A circle inside the donut around its hole in the center cannot be shrunk to a point. An arbitrary circle inside the bun, however, can. The mathematical ...

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Photocatalysis: the Nano-Sponge Revolution

Creating a sponge-like hole structure on the nanometre scale that allows small molecules to pass through, record-breaking chemical reactivity was achieved

16-Feb-2022

Catalysts are often solid materials whose surface comes into contact with gases or liquids, thereby enabling certain chemical reactions. However, this means that any atoms of the catalyst that are not on the surface serve no real purpose. Therefore, it is important to produce extremely porous ...

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2D material in three dimensions

This could help, for example, to increase the storage capability per volume for hydrogen or to build chemical sensors with higher sensitivity

02-Feb-2022

How do you integrate as much as possible of the 2D material graphene into a limited space? By producing it not on a flat surface, but on a 3D nanostructure. The carbon material graphene has no well-defined thickness, it merely consists of one single layer of atoms. It is therefore often referred ...

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