Ultra-fast image sensor with a built-in neural network can be trained to recognize certain objects

06-Mar-2020

Automatic image recognition is widely used today: There are computer programs that can reliably diagnose skin cancer, navigate self-driving cars, or control robots. Up to now, all this has been based on the evaluation of image data as delivered by normal cameras - and that is time-consuming. ...

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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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Identifying faecal bacteria by their DNA

30-May-2017

In a project supported by the Austrian Science Fund FWF, the microbiologist Andreas Farnleitner is looking at new methods for analysing faecal pollution in water. Using DNA analytics, the scientist aims to develop comprehensive and simple methods to determine the extent and origin of faecal ...

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01-Feb-2017

The laboratory of Dr. Miriam M. Unterlass at the Institute of Materials Chemistry at TU Wien has just reported the synthesis of more than 20 different perylene bisimide dyes. This is not impressive per se. The way they prepare these compounds is though: Conventionally, perylene bisimides are ...

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23-Dec-2015

Perovskites are materials used in batteries, fuel cells, and electronic components, and occur in nature as minerals. Despite their important role in technology, little is known about the reactivity of their surfaces. Professor Ulrike Diebold's team at TU Wien (Vienna) has answered a long-standing ...

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15-Dec-2015

If light is able to propagate from left to right, the opposite direction is usually allowed as well. A beam of light can normally be sent back to its point of origin, just by reflecting it on a mirror. Researchers at TU Wien have developed a new device for breaking this rule. Just like in an ...

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Its remarkable properties are not just due to the platinum, the iron-oxide also plays a role

17-Sep-2015

Platinum is a great catalyst and can be used for many different applications. It’s expensive stuff though, so tiny platinum nanoparticles sitting on cheap metal oxide materials are used to convert harmful carbon monoxide into carbon dioxide. Using scanning tunnelling microscopes, scientists at TU ...

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Materials allow surprising new kinds of light waves

11-Aug-2015

When a light wave penetrates a material, it is usually changed drastically. Scattering and diffraction leads to a superposition of waves, resulting in a complicated pattern of darker and brighter light spots inside the material. In specially tailored materials, which can locally amplify or absorb ...

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25-Jul-2014

Researchers at the Helmholtz-Zentrum Dresden-Rossendorf (HZDR), the Vienna University of Technology and the Maria Curie-Skłodowska University Lublin have succeeded in embedding nearly perfect semiconductor crystals into a silicon nanowire. With this new method of producing hybrid nanowires, very ...

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24-Apr-2014

Usually, chemical reactions just take their course, much like a ball rolling downhill. However, it is also possible to deliberately control chemical reactions: at the Vienna University of Technology, molecules are hit with femtosecond laser pulses, changing the distribution of electrons in the ...

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