SLAC National Accelerator Laboratory

An additional water is introduced into the manganese cluster during the formation of the S3 state of photosystem II

During photosynthetic water oxidation, the Mn4Ca cluster in Photosystem II progresses through five intermediate Si (i = 0–4) states. X-ray crystallography studies have reported the insertion of one new O ligand during the formation of the S3 state, but recent studies question the...

Retail Electricity Costs and Emissions Incentives Are Misaligned for Commercial and Industrial Power Consumers

Abstract Electrification is contributing to substantial growth in U.S. commercial and industrial loads, but the cost and Scope 2 carbon emission implications of this load growth are opaque for both power consumers and utilities. We present a comprehensive spatiotemporal data set...

Ultra-compact plasma photocathode in a hybrid wakefield accelerator

Abstract Plasma-based particle accelerators, realized by driving plasma waves with either an intense laser pulse or particle beam, offer accelerating fields orders of magnitude higher than conventional accelerators. This enables sources of highly relativistic electron beams with...

A Survey of Distributed Asynchronous Many-Task Models and Their Applications

Asynchronous many-task (AMT) runtime systems have become an important paradigm for expressing fine-grained parallelism and managing asynchrony in high-performance computing (HPC). Originating from early dataflow concepts, AMTs have evolved to enable dynamic task generation, expli...

Influence of many-body correlation and mixed-valence fluctuations on X-ray magnetic circular dichroism and resonant inelastic X-ray scattering spectra

X-ray magnetic circular dichroism (XMCD) and resonant inelastic X-ray scattering with magnetic circular dichroism (RIXS-MCD) provide unparalleled insights into the electronic and magnetic dynamics of complex materials. However, interpreting their spectra in mixed-valence systems...

Titanium Oxynitrideby TiO2 Nitridation:A Comparative Study of Film, Nanoparticle, and Metasurface NanostructureProperties

Abstract Titanium oxynitride (TiOxNy) is a unique plasmonic material bridging dielectric TiO2 and metallic TiN. In this study, the properties of TiOxNy films, film-derived metasurfaces, and colloidal nanoparticles, all synthesized by the temperature-controlled ammonia nitridation...

Understandingthe Electronic Structure of RutheniumOxides during Redox Cycling with High Energy Resolution X-rayAbsorption Spectroscopy

Abstract Ruthenium oxides are essential catalysts and charge storage materials whose performance across reactions, from the oxygen evolution reaction to the chlor-alkali process, depends critically on reversible Ru redox cycling and the associated electronic structure changes. Al...

Deciphering Kinetic Principles of Dual‐Anion Electrolytes for Extreme Fast‐Charging Lithium‐Ion Batteries

ABSTRACT Tailoring Li + solvation coordination has been recognized as a strategy to enhance the electrochemical performance of lithium‐ion batteries (LIBs) under extreme fast‐charging (XFC) conditions. Beyond weakening Li + solvation, increased Li–anion pairing plays a crucial ro...