National Institute of Standards and Technology

Isothermal Captureand Release of Carbon Dioxide witha Porous Molecular Hexaamine

Abstract The decarbonization of fossil fuel combustion streams and air is imperative to achieve negative carbon emissions and requires discovery of new materials that exhibit high CO2 capacities, long-term stability, and minimal energy input for the release of pure CO2. Numerous...

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...

Electromagnetically induced transparency and population repump readout of Rydberg states of Cs atoms in a J-scheme

Rydberg atom electrometry offers traceable electric field measurements over many decades of radio frequencies in a single device. Miniaturization of these sensors is primarily limited by the requirements of the lasers used. Here, we demonstrate a three-photon sensing scheme using...

Breaking voltage-controlled magnetic anisotropy–magnetoresistance trade-off for ultralow-energy switching in magnetic tunnel junctions

Electric-field control of spin states offers a promising route to ultralow-power, ultrafast magnetization switching in spintronic devices such as magnetic tunnel junctions (MTJs). However, enhancing voltage-controlled magnetic anisotropy (VCMA) through interfacial engineering oft...

Room-temperature multiferroicity in all–van der Waals heterostructures

Multiferroics host simultaneous and coupled ferroic orders, allowing disparate external stimuli to induce abrupt transformations in their structures and properties. Creating multiferroicity in two-dimensional (2D) van der Waals (vdW) platforms would add the elements of strong qua...

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...

Identificationof the Site of the Fe–S Clusterin CPSF30 via Metal-Coupled Oxidation-Mass Spectrometry

Abstract Cleavage and polyadenylation specificity factor 30 (CPSF30) is a zinc finger protein that plays a key role in pre-mRNA processing by recognizing specific AU-rich sequence elements to facilitate polyadenylation. CPSF30 contains five highly conserved domains made up of thr...

Toxicity and DNA Adduct Formation Reinforce AI-Guided Prediction of Aflatoxin B1 Bioactivation in VERO E6 Cells

VERO cells, derived from the kidney epithelium of the African green monkey, are widely used in virology, but their ability to metabolize xenobiotics is not fully understood. Since cytochrome P450 (CYP) enzymes participate in xenobiotic metabolism, we investigated which CYP genes...