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7 Current news about the topic x-rays

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Scientists observe nanowires as they grow

X-ray experiments reveal exact details of self-catalysed growth for the first time

12-Feb-2018

At DESY's X-ray source PETRA III, scientists have followed the growth of tiny wires of gallium arsenide live. Their observations reveal exact details of the growth process responsible for the evolving shape and crystal structure of the crystalline nanowires. The findings also provide new ...

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Gum metals pave the way for new applications

Scientists discover peculiarities in crystal structure of titanium alloy

02-Feb-2017

Metals which can be bent as gum pave the way for new industrial applications for example in the aerospace industry. These so-called gum metals exist but the mechanism behind this behaviour was still unsettled and thus difficult to be used for applications. Scientists from the Max-Planck-Institut ...

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New use for X-rays: A radar gun for unruly atoms

04-Apr-2016

X-rays have long been used to make pictures of tiny objects, even single atoms. Now a team of scientists has discovered a new use for X-rays at the atomic scale: using them like a radar gun to measure the motion and velocity of complex and messy groups of atoms. "It's a bit like a police speed ...

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Mechanism for radiation damage identified

Scientists examine electronic decay processes with the aid of quantum chemistry

11-Mar-2016

What exactly are the processes when x-ray photons damage biomolecules with a metal centre? This question has been investigated by a team of scientists at the Institute for Physical Chemistry of Heidelberg University. Using the methods of quantum chemistry, they examined the underlying electronic ...

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New X-ray method: Scattering provides detailed images of nanostructures

Details from the inner life of a tooth

24-Nov-2015

Both in materials science and in biomedical research it is important to be able to view minute nanostructures, for example in carbon-fiber materials and bones. A team from the Technical University of Munich (TUM), the University of Lund, Charité hospital in Berlin and the Paul Scherrer Institute ...

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New 'molecular movie' reveals ultrafast chemistry in motion

X-ray laser measures atomic-scale details of how ring-shaped gas molecule breaks open, unravels

23-Jun-2015

Scientists for the first time tracked ultrafast structural changes, captured in quadrillionths-of-a-second steps, as ring-shaped gas molecules burst open and unraveled. Ring-shaped molecules are abundant in biochemistry and also form the basis for many drug compounds. The study points the way to ...

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Filming the film: Scientists observe photographic exposure live at the nanoscale

Advanced method opens up new opportunities for investigation of dynamic processes

11-Jun-2015

Photoinduced chemical reactions are responsible for many fundamental processes and technologies, from energy conversion in nature to micro fabrication by photo-lithography. One process that is known from everyday's life and can be observed by the naked eye, is the exposure of photographic film. ...

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