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A Nanoscale View of Defect Effects on Band Structure

In the first comprehensive study at the ALS involving nanoARPES, researchers probed the electronic effects of defects in monolayer tungsten disulfide at the nanoscale. The extremely small scale of the measurements makes nanoARPES a great discovery tool that will be particularly useful for understanding new materials as they are invented. Read more »

Gas‐Phase Synthesis of Triphenylene (C18H12)

The cover image shows the triphenylene molecule as a potential precursor to two‐dimensional graphite nanosheets in the interstellar medium. The barrier‐less, exoergic nature of the reaction reveals a versatile reaction mechanism that may drive molecular mass growth processes in cold environments in deep space. Read more »

Reversible Lattice-Oxygen Reactions in Batteries

Researchers quantified a strong, beneficial, and reversible (over hundreds of cycles) chemical reaction involving oxygen ions in the crystal lattice of battery electrode materials. The results open up new ways to explore how to pack more energy into batteries with electrodes made out of low-cost, common materials. Read more »PPT-icon-35 PDF-icon-35

Conductive triethylene glycol monomethyl ether substituted polythiophenes with high stability in the doped state

Researchers synthesized and characterized two iodine-doped polymers with high conductivity and stability. The doping increases the transparency of thin films of the polymer, which are resistant to common organic solvents. All these properties indicate great potential for the polymers to be used in applications such as organic field effect transistors, organic photovoltaic devices, and sensors. Read more »

Scientists Take a Deep Dive Into the Imperfect World of 2D Materials

Researchers combined a toolbox of techniques to home in on natural, nanoscale defects formed in the manufacture of monolayer WS2, measuring their electronic effects in detail not possible before. The latest result marks the first comprehensive study at the ALS involving nanoARPES, which researchers enlisted to probe the 2D samples with x-rays. Read more »

Plumbing the Depths of Interfaces and Finding Buried Treasure

Understanding the interfaces where solids and liquids meet is key to controlling a wide range of energy-relevant processes, from how batteries store energy to how metals corrode, and more.  Now researchers have explored such interfaces and found what they describe as a treasure trove of unexpected results that expands our understanding of working interfaces and how to probe them. Read more »

How to Catch a Magnetic Monopole in the Act

A research team has created a nanoscale “playground” on a chip that simulates the formation of exotic magnetic particles called “monopoles.” The study could unlock the secrets to ever-smaller, more powerful memory devices, microelectronics, and next-generation hard drives that employ the power of magnetic spin to store data. Read more »

Meteorites Suggest Galvanic Origins for Martian Organic Carbon

Nanoscale analyses of Martian meteorites suggest that organic carbon on Mars may have been formed by electrochemical reactions between briny liquids and volcanic minerals, as might occur in a galvanic cell. The study has major implications for astrobiology and could also shed light on the reactions that led to life on the early Earth. Read more »

ALS Tips Hat to 10 Years of Top-Off

In February, the ALS marked the 10th anniversary of one of the biggest upgrades in its history: the transition to “top-off mode,” which took place on February 11, 2009. To celebrate, the ALS community gathered for ring-shaped pastries (i.e., donuts) and coffee (topping off allowed). Brief remarks were given by Steve Kevan and Dave Robin. Read more »