In a major scientific leap, University of Queensland researchers have created a quantum microscope that can reveal biological structures that would otherwise be impossible to see.
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The movement of electrons can have a significantly greater influence on spintronic effects than previously assumed. This discovery was made by an international team of researchers led by physicists from the Martin Luther University Halle-Wittenberg (MLU). Until now, a calculation of these effects took, above all, the spin of electrons into consideration. The study was published in the journal Physical Review Research and offers a new approach in developing spintronic components.
Many technical devices are based on conventional semiconductor electronics. Charge currents are used to store and process information in these components. However, this electric current generates heat and energy is lost. To get around this problem, spintronics uses a fundamental property of electrons known as spin. This is an intrinsic angular momentum, which can be imagined as a rotational movement of the electron around its own axis, explains Dr Annika Johansson, a physicist at MLU. The spin
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Tsukuba, Japan - Ceramic materials that are resistant to cracking are used in a variety of industries from aerospace engineering to dentistry. Toughening them to improve their efficiency and safety is therefore an important area of investigation. Researchers from the University of Tsukuba have used time-resolved X-ray diffraction to observe transformation toughening in zirconia ceramics during dynamic fracture. Their findings are published in
Applied Physics Letters.
Current methods of observation allow the formation of cracks in materials to be observed in situ while loads are applied. These close-up analyses can capture changes on a very small scale with fast resolution, providing clear pictures of fractures and of how the material resists them through toughening.
Conventional carbon capture is limited by high transportation costs and the need for intensive purification. Membrane-based direct air capture is a promising alternative because capture and storage can be performed at the same remote sites, and low CO2 purity is acceptable for geological storage because the impurities are not hazardous. Molecular dynamics simulations of geological storage of CO2-N2-O2 mixtures from direct air capture demonstrated that this approach is both environmentally acceptable and economically viable.
A UMass Lowell geologist is among the researchers who have discovered a new type of manmade quasicrystal created by the first test blast of an atomic bomb.