Anaerobic SEC-MALS-SAXS at the SIBYLS beamline probes the conformational states behind electron bifurcation in the Thermotoga maritima EtfABCX, revealing insights on mechanisms at the thermodynamic limits of life. Shown are the bifurcation- and electron-conducting-like states experimentally observed for the first time in solution. Read more »
Journal Covers
Shaping the Water-Harvesting Behavior of Metal–Organic Frameworks Aided by Fine-Tuned GPT Models
The reticular design and synthesis of metal–organic frameworks enable the structures to be engineered at an atomic level, allowing their properties to be harmoniously harnessed. AI-assisted design of building units can reduce human labor in the enumeration and search for possible structures, thereby accelerating the discovery of MOFs. Read more »
Optical Properties of Individual Tar Balls in the Free Troposphere
Tar balls are found in biomass-burning smoke, and their sunlight-absorption properties are highly uncertain. This study investigates the optical properties of individual tar balls in the free troposphere to better understand their influence on climate. Read more »
Spectroscopic investigation of a Co(0001) model catalyst during exposure to H2 and CO at near-ambient pressures
We have performed near-ambient-pressure X-ray photoelectron spectroscopy on Co(0001) model catalysts during exposure to gases relevant to Fischer–Tropsch synthesis, i.e., CO and H2, at 0.25 mbar total pressure. At this pressure, CO seems to be more efficient at keeping the Co(0001) surface metallic than H2, which is the opposite behavior as reported in the literature for other pressure ranges. Read more »
Precisely patterned nanofibres made from extendable protein multiplexes
Superhelical symmetry can be found in helical repeat proteins, and de novo helical repeat proteins are rigid and amenable to stacking in a head-to-tail fashion, which is an important factor in building up coincident symmetries. Now, using cyclic helical repeat proteins, Baker and colleagues generate protein nanostructures—as depicted on the cover—with coincident cyclic and superhelical symmetry axes. Read more »
Controlling the Structure and Morphology of Organic Nanofilaments Using External Stimuli
Coexisting organic helical and helicoidal crystalline nanofilaments formed by molecules with a bent molecular shape can now be transformed to a smectic liquid crystal phase or only helical nanofilaments by applying an electric field or irradiating the sample with UV light. Read more »
Organic Matrix Derived from Host–Microbe Interplay Contributes to Pathological Renal Biomineralization
A composite image of a rare form of kidney stone, illustrating extensive organic filamentous networks abundant with immune response-related proteins such as calprotectin (displayed in red), myeloperoxidase (in yellow), and DNA molecules (in blue). Originating from intricate host-microbe interplay, these organic networks promote the heterogeneous nucleation and precipitation of inorganic particulates. Read more »
Case study evaluation of size-resolved molecular composition and phase state of carbonaceous particles in wildfire influenced smoke from the Pacific Northwest
Wildfires are significant sources of carbonaceous particles in the atmosphere. Given the dependence of atmospheric processes on particle physical and molecular properties, the interplay between particle size, phase state and chemical composition is investigated here for aerosols influenced by a 2021 Pacific Northwest wildfire event. Read more »
Electronic transport and polarization-dependent photoresponse in few-layered hafnium trisulfide (HfS3) nanoribbons
We report on the electrical and optoelectronic characterization of field-effect transistor (FET) devices based on few-layered HfS3 nanoribbons. The results support the contention that in the presence of light, the photocarriers include both electrons and holes, enhancing the photocurrent of devices. Read more »
Toward High Efficiency Water Processed Organic Photovoltaics: Controlling the Nanoparticle Morphology with Surface Energies
Researchers achieve power conversion efficiencies approaching 10% by careful control of the nanoparticle and thin film morphologies thanks to surface energy considerations. This approach opens the route to low environmental footprint photovoltaics. Representing the promise of this sustainable direction in organic photovoltaics, the image shows the deposition of the active layer from water-based nanoparticles inks. Read more »
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