- In situ recombination junction between p-Si and TiO2 enables high-efficiency monolithic perovskite/Si tandem cells
A minimalist approach to integration yields tandem solar cells with high efficiency.
- Graphene catalyzes the reversible formation of a C–C bond between two molecules
Graphene grown on a transition metal surface catalyzes a reversible C–C bond–forming reaction between two molecules.
- Internal strain tunes electronic correlations on the nanoscale
Infrared nanoimaging reveals metallic and insulating stripes of μm size caused by internal strain at the charge-order transition.
- Rhodium-catalyzed, P-directed selective C7 arylation of indoles
We report a regioselective direct arylation of indoles at the C7 position with (hetero)aryl bromides.
- Discovering the forbidden Raman modes at the edges of layered materials
Forbidden Raman modes of layered materials (MoS2, WS2, WSe2, and black phosphorus) are detected from the edge regions.
- All-photonic quantum teleportation using on-demand solid-state quantum emitters
Photons generated on-demand by artificial atoms are used to demonstrate quantum teleportation.
- A path for lignin valorization via additive manufacturing of high-performance sustainable composites with enhanced 3D printability
We find the value of lignin for biomass processing industries via conversion to 3D-printable resin and its sustainable composites.
- Using 3D epigenomic maps of primary olfactory neuronal cells from living individuals to understand gene regulation
Profiling olfactory neuronal cells from many individuals reveals variations in epigenetic signatures.
- Neuroinflammatory signals drive spinal curve formation in zebrafish models of idiopathic scoliosis
Zebrafish models implicate neuroinflammation as an underlying cause of, and druggable therapeutic target for, idiopathic scoliosis.
- New neurons use Slit-Robo signaling to migrate through the glial meshwork and approach a lesion for functional regeneration
Appropriate positioning of new neurons in the brain promotes post-stroke functional recovery.
- Structure and dynamical behavior of non-normal networks
We show that many real-world networks are non-normal, with important consequences for their stability and dynamical behavior.
- Sleepmore in Seattle: Later school start times are associated with more sleep and better performance in high school students
After a 55-min delay in high school start times, students increased their sleep significantly and improved attendance and grades.
- A nanocrystalline monoclinic CaCO3 precursor of metastable aragonite
Monoclinic aragonite (mAra) is a naturally occurring nanocrystalline precursor of metastable aragonite.
- Multicomponent new particle formation from sulfuric acid, ammonia, and biogenic vapors
Atmospheric aerosol formation from biogenic vapors is strongly affected by air pollutants, like NOx, SO2, and NH3.
About The Cover
COVER Cellular structures found in nature are often imitated in synthetic materials like polymeric and metallic foams. New technologies like four-dimensional printing are being used to create cellular structures with various characteristics that display unique mechanical, functional and thermal properties. These materials—known as metamaterials—generally do not respond to a changing environment because the material and architecture are fixed in time after their creation. Seeking a material that better adjusts to the stimuli in their environment, Jackson et al. incorporated magnetorheological (MR) fluid suspensions into three-dimensional-printed polymer tubes to create a new class of FRMMs. The MR fluids line up under a magnetic field, thus making them stiffer. The authors demonstrated their approach by printing cuboctahedron unit cells with controlled fluid delivery methods and testing them in a custom device in which the magnetic field strength could be specially regulated. They found that the average response time when hardening was less than a second and, when turned off to soften, was less than a quarter of a second. The researchers further developed a model to predict the responsiveness of their FRMMs in different conditions. [CREDIT: JULIE A. JACKSON]