Combining x-ray reflection together with high resolution x-ray microscopy, scientists can now study interactions at the nanometer-scale which often can exhibit different properties and lead to new insights. Improving our understanding of interactions at the nanoscale holds promise to help us cure the sick, protect our environment and make us more secure.
This novel technique will lead to a better understanding of interfacial reactions at surfaces, such as ion adsorption, corrosion, and catalytic reactions. In particular, this method extends the capability of x-ray microscopy to observe sub-nanometer-sized interfacial features directly and in real time. This non-invasive approach complements the more widely used scanning probe microscopies and can image the topography of a solid surface without using probe-tips near the surface.
Argonne researchers together with Xradia, a firm specializing in x-ray optics and x-ray microscope systems, have achieved sensitivity to sub-nanometer sized features by using a phenomenon known as phase contrast. This breakthrough makes it possible to look directly at individual steps on a solid surface, borrowing a technique used previously in electron microscopy, "The ability to see individual nanometer-scale features is an important benchmark for X-ray microscopy" states Paul Fenter, Argonne National Laboratory Physicist. "Understanding interfacial reactivity is vital to many areas of science and technology, from the corrosion of metals to the transport of contaminants in the environment." Steve Wang of Xradia adds, "This technique opens up the possibility of watching these processes directly and will provide fundamentally new opportunities for understanding them."
This is a significant advance towards understanding the reactivity of solid-surfaces. Future studies will extend these measurements to the observation of real-time processes of mineral surfaces in contact with water. Employing a novel x-ray microscope setup developed by Xradia, and measurements performed at Argonne's Advanced Photon Source, home of the most brilliant X-ray source in the Western Hemisphere, was central to the teams' success.
Eleanor Taylor | EurekAlert!
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Artificial agent designs quantum experiments
19.01.2018 | Universität Innsbruck
On the way to an intelligent laboratory, physicists from Innsbruck and Vienna present an artificial agent that autonomously designs quantum experiments. In initial experiments, the system has independently (re)discovered experimental techniques that are nowadays standard in modern quantum optical laboratories. This shows how machines could play a more creative role in research in the future.
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At the JEC World Composite Show in Paris in March 2018, the Fraunhofer Institute for Laser Technology ILT will be focusing on the latest trends and innovations in laser machining of composites. Among other things, researchers at the booth shared with the Aachen Center for Integrative Lightweight Production (AZL) will demonstrate how lasers can be used for joining, structuring, cutting and drilling composite materials.
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Scientists at Tokyo Institute of Technology (Tokyo Tech) and Tohoku University have developed high-quality GFO epitaxial films and systematically investigated their ferroelectric and ferromagnetic properties. They also demonstrated the room-temperature magnetocapacitance effects of these GFO thin films.
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