The 2018 Klaus Halbach Award for Innovative Instrumentation at the ALS was presented at the annual User Meeting to the COSMIC ptychography team “for the development of the microscopy endstation at the COSMIC beamline, featuring an ultra-stable x-ray microscope, computational methods for data reconstruction, and a high-speed data acquisition system.” Read more »
A new tool lets researchers pinpoint the locations of chemical reactions happening inside batteries in three dimensions at the nanoscale level. Combining ptychography, tomography, and spectroscopy, Nanosurveyor 1 is a multidimensional tool providing novel insight into the design of next-generation batteries and devices. Read more »
After a first-year ramp-up for testing and tuning components, COSMIC is now operating at the ALS. The beamline brings together unique capabilities to measure the properties of materials at the nanoscale, and scientific results from its earliest experiments are expected to be published later this year. Read more »
Angle-resolved photoemission spectroscopy was used to measure the electronic structure of LiCu2O2, a mixed-valence cuprate where planes of Cu(I) (3d10) ions are sandwiched between layers containing one-dimensional edge-sharing Cu(II) (3d9) chains. Read more »
On Wednesday, March 29, the COherent Scattering and MICroscopy (COSMIC) Beamline (7.0.1) achieved first light, a significant milestone in the ALS’s plans to capitalize on recent gains in soft x-ray coherence provided by modern storage-ring light sources. Read more »
Researchers report on angle-resolved photoemission spectroscopy (ARPES) measurements performed on the transition-metal oxide V2O3. The results overturn a decade-old theory about metal-to-insulator transitions in this material and provide a spectroscopic benchmark test for future models. Read more »
All superconducting cuprates share a common structure: charge reservoirs stacked between layers of CuO2. An undoped version, including only C and O, is not available in nature. By growing epitaxial films with a pulsed-laser deposition facility, researchers stabilized a 2D version of CuO, which can be thought as composed by two CuO2 planes staggered and superposed.
Using angle-resolved photoemission spectroscopy (ARPES), researchers have shown that the number of conduction electrons in anatase, as well as their degree of correlation, can be patterned by exposure to UV light in a controllable and reversible way. Read more »