Scientists discovered an ancient form of rubisco, the most abundant enzyme on Earth and critical to life as we know it. Found in previously unknown environmental microbes, the newly identified rubisco provides insight into the evolution of the photosynthetic organisms that underlie the planet’s food chains. Read more »
Sophie Morley, Research Scientist
Sophie Morley became an ALS staff member this July but started coming to the ALS as a user in 2012. Sophie likes to surf and mountain bike, but read more to find out what she really considers to be her playground. 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 »
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 »
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 »
Small but Still Mighty: Ultrafine Grains Produce Ultrastrong Metals
Researchers used in situ high-pressure diffraction to resolve a debate about whether a metal’s strength increases or decreases when its grain size decreases below a critical point. The results indicate that ultrastrong metals for future applications can indeed be achieved through grain-size refinement and grain-boundary engineering. Read more »
2D Electronics Get an Atomic Tuneup
Researchers demonstrated a promising avenue for controlling atomic ordering in semiconductor alloys by engineering frustrated interactions in a 2D transition metal dichalcogenide (TMD). The work could lead to improved semiconductor performance for next-generation electronics such as optoelectronics, thermoelectrics, and sensors. Read more »
Roland Koch, Research Scientist
Roland Koch first became fascinated with synchrotron work at BESSY in Germany. He has been at the ALS ever since he finished his PhD and is happy to teach others everything from getting more meaningful data to flying a plane. Read more »
Rotavirus VP3 Is a Multifunctional Capping Machine
Rotavirus, a major cause of infantile gastroenteritis, is responsible for the deaths of about 200,000 children per year. Although vaccines are available, the virus still circulates, and a fuller understanding of the viral structures is needed. Here, scientists investigate the structure and function of the last unsolved rotavirus structural protein. Read more »
2020 Shirley Award to Honor Miquel Salmeron
By taking surface studies from ultrahigh vacuum to near-ambient pressure, Miquel Salmeron’s work at the ALS has had deep impact on a broad range of scientific questions, revealing the chemical, electronic, and mechanical properties of surfaces and interfaces on the nanometer (and often atomic) scale. Read more »
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