Electrochemical (battery) cells with aqueous electrolytes can be safe, inexpensive, and environmentally friendly, but they are limited by a narrow voltage window. X-ray absorption spectroscopy helps explain why an aqueous Na-ion system with Mn5O8 electrodes has a large voltage window and performs comparably to Li-ion batteries. ... Read more »
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A powerful soft x-ray microscope captures tomographic images of the genetic material in the nuclei of nerve cells at different stages of maturity. The detailed 3D visualizations show an unexpected connectivity in the genetic material and provide a new understanding of a cell’s evolving architecture. ... Read more »
Scientists at the Department of Energy’s Lawrence Berkeley National Laboratory (Berkeley Lab) and NASA are using x-rays to explore, via 3D visualizations, how the microscopic structures of spacecraft heat shield and parachute materials survive extreme temperatures and pressures, including simulated atmospheric entry conditions on Mars. ... Read more »
Soft x-ray ptychography was used to measure the absorption and refraction of x-rays through pristine reference materials as a basis for decomposing spatially resolved spectra from a heterogeneous sample, thereby quantifying the composition at high resolution. The novel method provided a nearly five-fold improvement in spatial resolution on resonance. ... Read more »
Visiting scientists met Jan. 18-20 at Berkeley Lab for a workshop that collected input on the range of new science that will be enabled by the planned upgrade of the Lab’s Advanced Light Source. The upgrade project, known as ALS-U, will boost the brightness, focus, and other properties of the light beams produced at the ALS. ... Read more »
Isvar Cordova has been at the ALS since February 2016, working as a postdoc at Beamline 11.0.1, the resonant soft x-ray scattering beamline, developing in-situ capabilities for material research. We sat down with him to talk about his background and what he’s enjoying about his experience at the ALS. ... Read more »
I want to thank everyone in the ALS family for an extremely productive and exciting 2016, and convey my expectations for our continuing successes in 2017. We have much to be proud of as we continue to build our capabilities and collaborations, increase the impact of our scientific outputs, and expand our ability to enable important science for users in so many areas of research and development. ... Read more »
The User Office is accepting new General User Proposals (GUPs) from scientists who wish to conduct research at the ALS in the August-December 2017 cycle. The deadline for submission is March 1, 2017. ... Read more »
The structures of proteins controlling calcium-ion transport through cell membranes have been revealed, bound to two drugs known as calcium channel blockers. The discovery might accelerate the development of safer and more effective drugs for treating cardiovascular disorders such as high blood pressure, chest pain, and irregular heartbeat.
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ARPES directly reveals for the first time how electronic states are altered when epitaxial graphene is deposited on a substrate of hexagonal boron nitride (h-BN). The interaction between the materials in this heterostructure greatly improves its suitability for advanced, ultralow-power device applications.
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