Antigens can sometimes be attached to a protein scaffold to mimic the shape of a virus and elicit a stronger immune response. Scientists developed a method to design such proteins, and ALS data helped to visualize the atomic structure and determine the dynamics of the designed scaffolds. Read more »
Scientists Capture Candid Snapshots of Electrons Harvesting Light at the Atomic Scale
A team of scientists has gained important new insight into electrons’ role in the harvesting of light in gold/TiO2 nanoparticle photoelectrochemical (PEC) systems. The scientists say that their study can help researchers develop more efficient material combinations for the design of high-performance solar fuels devices. Read more »
Understanding Electronic Structure in MXenes, One Atomic Layer at a Time
MXenes are 2D materials that can host a rich array of distinct chemical compositions that can be tuned for a broad range of applications, from energy storage to water purification. Site-specific x-ray absorption spectroscopy helped identify the unique roles of surface and subsurface transition-metal atoms in Ti-based MXenes. Read more »
A Probe of Light-Harvesting Efficiency at the Nanoscale
Using time-resolved experiments at the ALS, researchers found a way to count electrons moving back and forth across a model interface for photoelectrochemical cells. The findings provide real-time, nanoscale insight into the efficiency of nanomaterial catalysts that help turn sunlight and water into fuel through artificial photosynthesis. Read more »
ALS in the News (September 2020)
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- Synchrotrons face a data deluge
- 2021 Breakthrough Prize winners announced: Researcher who developed protein design technology awarded $3 million
- Berkeley Lab in sepia tones: The day the skies grew dark
- When nano meets bio
- Scientists probe the chemistry of a single battery electrode particle both inside and out
- Lightweight green supercapacitors could quickly charge devices
- New anode material could lead to safer fast-charging batteries
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Characterization of EUV Optics using Intrinsic Mask Roughness
Researchers developed an in situ computational technique for measuring aberrations in EUV optics, taking advantage of the surface roughness of photomasks used to transfer circuit patterns onto chips. The technique will prove increasingly valuable in the characterization of coherent light sources and beamline optical systems. Read more »
The Flat Band in Magic-Angle Graphene Visualized
Researchers visualized flat band structures associated with exotic electronic phases in stacked graphene layers offset from each other by a “magic angle.” The work corroborates theoretical predictions and has significant implications for phenomena of technological and fundamental interest, such as topological phases and superconductivity. Read more »
Site-dependent selectivity in oxidation reactions on single Pt nanoparticles
Heterogeneous catalysis is a surface-controlled phenomenon in which different surface sites often show variations in reactivity, posing a major complication for the chemical industry. Here, site-dependent selectivity in oxidation reactions on Pt nanoparticles was identified by conducting IR nanospectroscopy measurements while using allyl-functionalized N-heterocyclic carbenes (allyl-NHCs) as probe molecules. Read more »
Missing Lysine Link Could Improve Plant-Based Nutrition
To engineer crops with higher levels of the important amino acid, lysine, researchers solved the structure of an enzyme that helps break down lysine in plants. A fuller understanding of the factors affecting lysine levels should aid in the successful development of stable high-lysine crops to combat malnutrition globally. Read more »
2020 ALS User Meeting Highlights
An experiment born of necessity, the 2020 ALS User Meeting was held August 25–28, “in silico.” The results have been generally positive, revealing emergent benefits to interactions occurring in the virtual realm, even as we hope for a return to real space ASAP. Read more »
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