New reactions, catalysts, molecules and processes.
Updated
An experimental toothbrush with PVDF filaments generates a charge that produces reactive oxygen species against oral bacteria. Lab and three-month human tests were reported.
Measurements from a research cruise show that Subantarctic Mode Water and Antarctic Intermediate Water enrich in nutrients differently as they move north for decades.
Jilin University and Changchun Institute of Applied Chemistry modified a carbon nanotube cathode to curb iodine shuttling in an aqueous zinc battery; a pouch-cell prototype was also built.
Chemists at the Shanghai Institute of Organic Chemistry isolated copper–heteroaryl sulfone complexes that cleave a C–S bond under visible light, producing alkyl radicals.
Astrophysicists measured the deuterium-to-hydrogen ratio in the methane of 3I/ATLAS and found it about 13 times that of comet 67P. The exact age remains uncertain.
Molecular dynamics of Trp-cage cooled at seven rates, the slowest matching experiment, found small but observable population shifts and a way to correct them.
Researchers from MIT and the University of Delaware used flexible charged ligands instead of rigid ones, controlling bonds per nanoparticle in laboratory experiments.
Chinese and US groups report that spinodal decomposition in Au50Ag20Cu30 raises elastic modulus and hardness together; nanoindentation and simulations agree.
Weill Cornell and Yonsei researchers describe a photocatalytic labeling method that identifies protein–protein interactions in human tissue without model organisms in the first discovery step.
Researchers in Beijing partitioned oxygen between α and β phases of a dual-phase titanium alloy, triggering a β → O' transformation and added plasticity.
Isotope data point to an organic carbon source, likely delivered by deep-sea landslides. The authors propose that earthquakes sustain carbonate formation in the hadal zone, which they treat as a carbon sink.
Evolution-informed and rational design were combined to engineer PET hydrolases; in vitro, many variants approached the LCC-ICCG benchmark in partial conversion.
Metadynamics simulations and high-pressure, high-temperature synthesis show scale-dependent pathways of diamond nucleation from carbon precursors of different dimensionality.
Chinese researchers made a laboratory CoO mesocrystal catalyst that resists water poisoning; the authors report it also worked at −5 °C and in a 3 m3 room.
A modeling-based review of hydrogen export projects in North Africa, Chile and Australia finds water withdrawal far above the stoichiometric nine litres per kilogram.
Researchers in India built a lab microbial fuel cell with a binder-free iron-nickel carbon nanofiber electrode. It treats sewage, degrades an antibiotic and produces hydrogen peroxide.
Analysis of finds from 18 Danish sites shows early Mesolithic tips matched poison-arrow widths, but chemical proof of poison is still missing.
Two samples returned by JAXA's Hayabusa2 in 2020 contain adenine, guanine, cytosine, thymine and uracil in roughly similar amounts. Bennu samples gave the same set.
Nature Communications study from the University of Padua: the enzyme thrombin truncates α-synuclein, a protein linked to Parkinson's disease, in vitro and in a complex biological medium.
Researchers led by the University of Cambridge modeled comet impacts and found that organic molecules would almost always be destroyed. Mars may have been slightly more favorable.
