Researchers have made the world’s thinnest (one atom thick) magnet that’s chemically stable under ambient conditions. The two-dimensional material, magnetically characterized at the ALS, could enable big advances in next-generation memory devices, computing, spintronics, and quantum physics. Read more »
Exquisitely Selective CO2 Reduction on Silver
Researchers electrochemically reduced CO2 to CO with nearly perfect selectivity over other products by adding an organic compound to the surface of a silver electrode. With theoretical analyses and ALS data, the work revealed the key role of the microenvironment in promoting the conversion of CO2, a greenhouse gas, into useful products. Read more »
Coulombically-stabilized oxygen hole polarons enable fully reversible oxygen redox
We investigate oxygen redox in layered Na2−xMn3O7, a positive electrode material with ordered Mn vacancies. Our results establish a complete picture of redox energetics by highlighting the role of coulombic interactions across several atomic distances and suggest avenues to stabilize highly oxidized oxygen for applications in energy storage and beyond. Read more »
A Powerful Infrared Technique Broadens Its Horizons
Scattering-type scanning near-field optical microscopy (s-SNOM) focuses infrared light to dimensions below the diffraction limit, measuring properties with components perpendicular to the sample surface. Researchers have now devised a way to probe components parallel to the sample, where the technique has been less sensitive. Read more »
Machine-Learning Team Receives 2021 Halbach Award
This year’s Halbach Award for Innovative Instrumentation at the ALS went to a team of accelerator physicists and computer scientists who were able to use machine-learning techniques to solve a problem that has plagued third-generation light sources for a long time: fluctuations in beam size due to the motion of insertion devices. Read more »
ALS in the News (July-August 2021)
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- A conversation with Antoine Wojdyla
- This exotic particle had an out-of-body experience; these scientists took a picture of it
- CAMERA mathematicians build an algorithm to ‘do the twist’
- Scientist at Berkeley Lab played a hand in “inescapable” COVID-19 antibody discovery
- Main attraction: Scientists create world’s thinnest magnet
- Biosciences Area and Molecular Biology and Integrated Bioimaging Division leadership changes
- Shape-shifting protein helps SARS-CoV-2 evade human immune defenses
- Engineering new treatments for cancer
- Hope for coral reefs
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Autonomous Data Acquisition for Scientific Discovery
Researchers at large scientific facilities such as the ALS have applied a robust machine-learning technique to automatically optimize data gathering for a variety of experimental techniques. The work promises to enable experiments with large, complex datasets to be run more quickly, efficiently, and with minimal human intervention. Read more »
Functional and structural characterization of AntR, an Sb(III) responsive transcriptional repressor
Antimony is considered a priority environmental pollutant by the EPA. The ant operon of the antimony-mining bacterium, C. testosterone, confers resistance to Sb(III). The operon is regulated by the product of the first gene in the operon, antR. This is the first report of the structure and binding properties of antR, with high selectivity for environmental antimony. Read more »
Sifting through Fragments for COVID-19 Treatments
COVID-19 vaccines are essential for preventing serious disease, but the identification of new drugs is still necessary for the treatment of patients who become sick as a result of SARS-CoV-2 infection. Here, scientists used computational docking and crystallography to screen large numbers of small molecules for potential use in drug compounds. Read more »
This Exotic Particle Had an Out-of-Body Experience; These Scientists Took a Picture of It
Scientists have taken the clearest picture yet of electronic particles that make up a mysterious magnetic state called a quantum spin liquid (QSL), in which electrons decompose into spin-like particles (spinons) and charge-like particles (chargons). The achievement could facilitate the development of superfast quantum computers and energy-efficient superconductors. Read more »
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