A new look inside 2,000-year-old concrete—made from volcanic ash, lime (the product of baked limestone), and seawater—has provided new clues to the evolving chemistry and mineral cements that allow ancient harbor structures to withstand the test of time. ... Read more »
ALS Gives Intel a Closer Look at Microelectronic Packages
Intel, the world’s largest semiconductor chip maker, has been using the tomography capabilities at ALS Beamline 8.3.2 to image their microelectronic packages in 3D at high resolution with short throughput time, providing valuable information for both failure analysis and product development and proving to the industry as a whole that synchrotrons are an insightful tool for this type of imaging. ... Read more »
Fine-Tuning Oxygen Vacancies with Coherent Strain
Researchers have demonstrated a novel way to systematically strain-engineer oxygen vacancies in complex transition-metal oxide thin films. The work advances our ability to tailor such defects, small changes in which can lead to dramatic changes in material properties such as conductivity and magnetism. ... Read more »
Gregory Su, Physicist Postdoctoral Fellow
Gregory Su is a postdoctoral fellow studying connections between chemistry, structure, and function in soft materials by combining experimental soft x-ray spectroscopy and scattering with ab initio calculations. Su has been at the ALS since March 2016 and works primarily with the scattering group at Beamline 11.0.1.2, the Resonant Soft X-Ray Scattering (RSoXS) Beamline. ... Read more »