Using a type of machine learning called “computer vision” to mine data from x-ray movies, researchers made new discoveries about the reactivity of a material in rechargeable batteries. The results suggest that optimizing the carbon layer thickness on the electrode surface could help researchers to design more efficient batteries. Read more »
Building a Two-Dimensional Magnet One Atom at a Time
Researchers synthesized a new two-dimensional ferromagnet and measured how its electronic and magnetic properties evolve with increasing thickness and temperature. Such atomically thin magnetic materials with tunable magnetic properties would be very useful in next-generation microelectronic and spintronic applications. Read more »
ALS in the News (November 2023)
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- Berkeley Lab’s CAMERA enhances DOE’s scientific facilities with new math and software innovations
- Visit of Ambassador Zappia to Berkeley Lab and SkyDeck and meetings with the Italian and Italian-American associations of San Francisco
- Discoveries go full circle in the hunt for an elusive protein’s function
- Peeking inside lithium-ion batteries offers new ways to put a stop to deadly fires
- Capturing wellhead gases for profit and a cleaner environment
- Why do batteries sometimes catch fire and explode?
- Unveiling the importance of calcite dissolution for stabilizing soil organic matter
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Optical Properties of Individual Tar Balls in the Free Troposphere
Tar balls are found in biomass-burning smoke, and their sunlight-absorption properties are highly uncertain. This study investigates the optical properties of individual tar balls in the free troposphere to better understand their influence on climate. Read more »
Why Do Batteries Sometimes Catch Fire and Explode?
In order to better understand how a resting battery might undergo thermal runaway after fast charging, scientists are using a technique called “operando x-ray microtomography” to measure changes in the state of charge at the particle level inside a lithium-ion battery after it’s been charged. Read more »
Immune Response Spurs Growth of “Soft” Kidney Stones
Matrix stones are an unusual type of soft kidney stone closely associated with the presence of bacteria from unchecked urinary tract infections. Researchers conducted a comprehensive study of surgically extracted matrix stones, work that highlights how host defense mechanisms against microbes can simultaneously encourage harmful stone formation. Read more »
ALS in the News (October 2023)
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- Trick or treatise? How much energy is packed in that candy bar?
- Itinerant magnetism and superconductivity in exotic 2D metals for next-generation quantum devices
- Photo review: Nuclear Scout Day at the Lab
- Six ways Berkeley Lab is helping to bring clean hydrogen to the world
- Creating a lithium-ion battery for the future
- Science comedian Brian Malow visits Berkeley Lab
- NASA Ames’ contributions to OSIRIS-REx
- High-performance, earth-friendly materials for geothermal wells
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Internal Currents in Lithium Batteries after Fast Charging
In lithium batteries after fast charging, researchers measured the persistence of internal currents and found that large local currents continue even after charging has stopped. The work uses hard x-ray 3D imaging in a novel way and sheds light on the causes of thermal runaway and the catastrophic failure of lithium batteries at rest. Read more »
Improving Carbon Retention in Grassland Soil from Point Reyes
Soil organic carbon directly influences the life-supporting services provided by soils, including the production of food and the regulation of atmospheric carbon dioxide. To better understand how minerals such as calcium affect carbon accumulation in soil, researchers studied soils collected from Point Reyes National Seashore. Read more »
HyMARC Aims to Hit Targets for Hydrogen Storage Using X-Ray Science
Understanding how materials absorb and release hydrogen is the focus of the Hydrogen Materials Advanced Research Consortium (HyMARC). At the ALS, the HyMARC Approved Program was recently renewed, underscoring the key role that soft x-ray techniques have played in addressing the challenges of hydrogen storage. Read more »
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