Microscopy at the ALS revealed that nanocrystal misorientation in tooth enamel tracked major dietary shifts in primates, contributing to enamel’s resilience. These structural details provide a blueprint for developing tougher, crack-resistant bioinspired materials, next-generation structural ceramics, and coatings. Read more »
ALS Work Using Microscopy/Imaging
These techniques use the light-source beam to obtain pictures with fine spatial resolution of the samples under study and are used in diverse research areas such as cell biology, lithography, infrared microscopy, radiology, and x-ray tomography.
Burning Questions: How Heat Shield Materials Evolve Under Extreme Heat
Superlight ablator materials are critical for protecting spacecraft under the extreme heat of atmospheric reentry. Researchers combined in situ X-ray microcomputed tomography at the ALS with super-resolution techniques to characterize the microstructural evolution of these materials during heating. Read more »
X-Ray Magnetometer Advances Characterization of Magnetic Nanofilms
Using X-ray interferometry at the ALS, researchers characterized key optical and functional properties of magnetic materials with high sensitivity. This novel magnetometer scheme could accelerate discovery of magnetic thin film materials with broad applications across modern technology. Read more »
How Wildfires Transform Soil Chemistry
X-ray microscopy tools at the ALS and SSRL mapped the chemical changes inside wildfire ash particles, revealing that pyrogenic iron and manganese gradually disappeared as the soil recovered. These findings shed light on how wildfires drive transient mineral formation that impacts micronutrient cycling and soil resilience, with implications for landscape recovery strategies. Read more »
Aerosol Chemistry Offers Clues to the Arctic’s Future
Researchers used scanning transmission x-ray microscopy to analyze Arctic aerosols, which strongly influence cloud formation and overall climate. Understanding what these particles are and how they change as they travel could help improve climate models and yield more accurate predictions of the changing Arctic environment’s global impact. Read more »
Ancient Asteroid Provides Evidence of Amino Acid Precursors
Researchers identified nitrogen-rich compounds in samples from the asteroid Bennu, returned to Earth by NASA’s OSIRIS-REx mission. The results support the idea that asteroids like Bennu may have delivered the essential chemical building blocks of life to Earth in the distant past. Read more » 
The Secret to Drought Tolerance Lies in a Lilac Crypt
Many species of California lilac grow throughout the state, north to Humboldt and south to San Diego. Some species have developed an adaptation for arid climates: the stomatal crypt. This extremely rare anatomy intrigued a group of researchers, who characterized species with these crypts at the ALS. Their microtomography characterization revealed how the stomatal crypt helps plants survive drought. Read more »
Vertical gradient in atmospheric particle phase state: a case study over the alaskan arctic oil fields
Integrating chemical composition and phase state measurements demonstrated that carbonaceous-rich and organic-dominated particles exhibited higher viscosities, while inorganic-rich particles displayed lower viscosities. This finding establishes an association between composition and phase state, offering critical insights into the vertical stratification of Arctic particles. Read more »
A Clearer Look at Lithium-Ion Traffic Jams in Batteries
By directly visualizing the uneven insertion of lithium ions into electrodes with well-defined crystal orientations, researchers learned why fast charging decreases battery lifespan and performance. The work could provide insights into better battery utilization and help investigations of the surface insertion reaction during fast charging. Read more »
Bennu’s Ancient Brine Sheds Light on Recipe for Life
Researchers traced the evolution of minerals (“salts”) in an ancient brine, as recorded in samples from the asteroid Bennu, returned to Earth by NASA’s OSIRIS-REx mission. The results support the idea that asteroids like Bennu may have delivered water and essential chemical building blocks of life to Earth in the distant past. Read more »
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