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166 Current news about the topic electrons

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The fast dance of electron spins

Chemists investigate the interactions of metal complexes and light

07-Oct-2019

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. In many of these applications, the electron spin, a kind of inherent rotation of the electrons, ...

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How to design efficient materials for OLED displays

25-Sep-2019

For applications such as light-emitting diodes or solar cells, organic materials are nowadays in the focus of research. These organic molecules could be a promising alternative to currently used semiconductors such as silicon or germanium and are used in OLED displays. A major problem is that in ...

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A molecular bridge further

Molecular electronics

20-Sep-2019

Electronics built from molecules could open up new possibilities in the miniaturization of circuits in the future. Empa researchers, together with partners from Switzerland, the Netherlands, Israel, and the UK, succeeded in solving a crucial detail in the realization of such circuit elements: A ...

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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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Discovery of periodic tables for molecules

10-Sep-2019

Scientists at Tokyo Institute of Technology (Tokyo Tech) develop tables similar to the periodic table of elements but for molecules. Their approach could be used for predicting novel stable substances and creating useful materials. The periodic table of elements was proposed in 1869, and ...

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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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A laser for penetrating waves

Research team develops a new principle to generate terahertz radiation

20-Aug-2019

The "Landau-level laser" is an exciting concept for an unusual radiation source. It has the potential to efficiently generate so-called terahertz waves, which can be used to penetrate materials as well as for future data transmission. So far, however, nearly all attempts to make such a laser ...

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How light steers electrons in metals

09-Aug-2019

ETH physicists have measured how electrons in so-called transition metals get redistributed within a fraction of an optical oscillation cycle. They observed the electrons getting concentrated around the metal atoms within less than a femtosecond. This regrouping might influence important ...

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What happens when you explode a chemical bond?

Attosecond laser technique yields movies of chemical bond dissociation

15-Jul-2019

On bright summer days, the sunlight all around us is breaking bad by breaking bonds. Chemical bonds. Ultraviolet light shatters the links between atoms in the DNA of our skin cells, potentially causing cancer. UV light also breaks oxygen bonds, eventually creating ozone, and cleaves hydrogen off ...

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Caught in the act: Images capture molecular motions in real time

15-Jul-2019

Researchers have used ultra-high-speed x-ray pulses to make a high-resolution "movie" of a molecule undergoing structural motions. The research, published in Nature Chemistry, reveals the dynamics of the processes in unprecedented detail -- capturing the excitation of a single electron in the ...

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