"Criegee intermediates" are elusive molecules that play a pivotal role in atmospheric chemistry and are also byproducts of key combustion reactions. At the Chemical Dynamics beamline, the reaction rates of one form of Criegee intermediate was directly measured for the first time, with some surprising results.

Among the legions of proteins required for DNA replication, the “flap endonuclease” FEN1 plays a key role. An international team of scientists working at the SIBYLS Beamline has now solved the structure of human FEN1 bound to DNA, revealing the surprising mechanism behind its speed, accuracy, and versatility.

An international research team working at ALS Beamline 11.3.1 studied metal-ion-mediated reactions of 2-pyridinealdoxime (the simplest 2-pyridyl oxime and the only aldoxime in this family) and observed novel transformations of the ligand.

Researchers at the University of California, Berkeley and the ALS have used the far/mid-infrared FTIR of ALS Beamline 1.4 to study the plasmon excitation in graphene. They observed remarkably strong and tunable plasmon excitations in the Terahertz range, which demonstrate the exotic behaviour of 2D massless Dirac electrons and shed new light on graphene's application in THz metamaterials.