Researchers have developed a graphdiyne-based metal atomic catalyst that achieves high selectivity and yield in ammonia synthesis. The catalyst, which exhibits determined electronic and chemical structure, demonstrated remarkable performance in converting nitrogen to ammonia at ambient temperatures and pressures.
New study uses phylogenetic information to estimate timing of Himalayan uplift and origin of biodiversity. The Stepwise Hypothesis is supported by in situ diversification and dispersal rates, while the Late Orogeny Hypothesis is rejected due to inconsistencies with origination and peak diversification times.
This study highlights the importance of evenness in assessing sustainable development goals, revealing a bottleneck in China since 2013 due to stagnant progress in some SDGs. Regional integration and cooperation are proposed as effective strategies for holistically achieving SDGs across regions.
Researchers have developed an ultra-sensitive hybrid nanothermometer that can detect small temperature changes in ambient conditions. The device uses a nitrogen-vacancy center in diamond and a magnetic nanoparticle to measure thermal signals with a precision of 76 microkelvin per second.
Topological photonics explores discrete states of light, similar to Fock states of electrons. The connection between the Maxwell and Schrodinger equations reveals new topological phases, including a Haldane model for valley Hall effect.
Recent advances in OFET device models incorporate molecular-level parameters, enabling more accurate simulation of micrometer-sized devices. These models have improved the understanding of charge-transport mechanisms and provided insights into nonlinear current characteristics.
Researchers found that sapphire crystal faces exhibit contact angles far greater than 10°, with the (1-102) face being hydrophobic. This discovery provides insights into intrinsic wettability and its potential applications in materials science and technology.
Researchers have developed a new method for two-dimensional optical spatial differentiation, enabling efficient broadband imaging with high contrast. The proposed dielectric metasurface device outperforms current methods in efficiency, compactness, and power consumption.
Researchers have found that EEG-based BCI speller output can be easily manipulated by tiny adversarial noise, exposing a critical security concern. This manipulation can lead to user frustration or severe misdiagnosis in clinical applications.
Researchers have developed a new cerium(III) complex that achieves 100% EUE in OLEDs, leading to improved device stability and efficiency. The device shows a maximum external quantum efficiency of 20.8%, smaller roll-off, higher maximum luminance, and longer operating lifetime compared to traditional iridium-based OLEDs.
Researchers have developed a novel amphiphilic AIE-active sensor that can overcome the traditional bioimaging bottleneck by achieving high targeting ability and selectivity. The sensor utilizes an amphiphilic characteristic to prevent aggregation in aqueous environments and ensure accurate fluorescence signal mapping.
A new crystal model system accurately identifies catalytic active sites in electrocatalysis, revealing pyridine N as a suitable active site for CO2 reduction. The study provides significant insights into the reaction mechanism and catalyst performance.
Researchers have discovered a large family of 2D ferroelectric metals using machine learning, finding 60 stable materials with unique properties. The discovery could lead to new applications in magnetoelectric and magnetostrictive devices.
Researchers have developed methods to calculate the QED correction of helium to the 7th power series, which are the most accurate results to date. Precision measurements of helium atoms also have a broad impact on various important studies, including determining the radius of helium nuclei and calculating polarizability.
Researchers developed an air-insensitive biphenol derivative cathode with high potential and solubility, demonstrating stable cycling performance and high rate capabilities. The cathode's biphenol structure offers excellent oxidation resistance and four tertiary ammonium groups improve stability.
Researchers discovered neutral Co13O8 clusters with cubic structure and large HOMO-LUMO gap, exhibiting remarkable thermal stability and aromaticity. These 'metalloxocubes' are expected to become suitable candidates for genetic materials.
Researchers achieve breakthrough in designing carbonaceous materials as cathodes with ultrahigh energy density (>1000 Wh kg?1) through p-type doping strategy. The work presents a new paradigm for evaluating electrochemical performance from multiple perspectives.
A recent study used OBS data to clarify the formation mechanism of the Double-peak seamount in the Northwest Sub-basin (NWSB) of the South China Sea (SCS). The survey revealed a high velocity layer at the bottom of the crust, indicating possible in-situ mantle serpentinization or lower crust magma underplating. The study enriches the d...
The study investigates carbonate deposition with different depositional environments, using a three-dimensional basin-fill model and sensitivities analysis. It demonstrates that stratal completeness is controlled by sea level changes, depositional environments, carbonate growth rates, and tectonic subsidence patterns.
Halogen-bonding supramolecular co-crystals exhibit diverse architectures and impressive physicochemical properties, including fluorescence, magnetism, and liquid crystal behavior. The strength of halogen bonds enables the formation of complex assemblies with synergistic effects between components.
Researchers found genetic variation in DDX1 associated with increased expression and poor survival in neuroblastoma. The MAX protein binds to the DDX1 promoter, influencing MYCN-related variants' impact on neuroblastoma risk.
A team led by Prof. Ping-Heng Tan proposed the birefringence-linear-dichroism (BLD) model to quantify ARPR intensity in bulk black phosphorus and opaque anisotropic crystals. The BLD model considers complex refractive indexes along three principle axes, reproducing experimental data without fitting parameters.
Scientists analyze state-of-the-arts in rational design of hierarchical micro-/mesoporous structures to alleviate diffusion resistance and improve catalyst efficiency. Well-designed hierarchically porous structure ensures rapid diffusion and desorption of products, avoiding deactivation.
The study reveals that the real catalytically active phase for CO2 electroreduction is inconsistent with the as-prepared or post-catalyzed catalyst structure. High-performance CO2 electroreduction into formate is achieved on the operando regenerative structure.
Researchers developed a new technique using Laser Raman spectroscopy to analyze mineral-organic aggregations (MOA) for estimating thermal maturity levels in high and over-mature marine shales. This method provides an alternative solution for evaluating maturity in lower Paleozoic and Precambrian shales with rare organic matter.
Researchers analyzed the impact of a plain afforestation project in Beijing, finding that some forest patches showed worse growth due to interrupted afforestation. They also found that this project occupied fertile farmland, decreasing connectivity and compactness.
A team of scientists has found a new Hall effect phenomenon in non-magnetic materials, revealing an intrinsic in-plane response that defies classical expectations. The observed effect is attributed to the interplay between Berry curvature and Weyl semimetal properties.
Researchers propose using nanomaterials to elevate oxygen levels in tumor tissues, reducing resistance to therapies. Additionally, therapeutic gas-generating and radical-generating nanomaterials can control oxygen delivery and induce cell death, offering new avenues for hypoxic tumor treatment.
Scientists have developed biocompatible TeSex nano-alloys that eliminate toxicity and enhance theranostic performances for precision medicine. The nano-alloys enable high-efficacy photothermal therapy under multimodal imaging guidance.
Researchers develop Salvinia-like slippery surface with stable water/air contact line, exhibiting increased stability against pressure and impact. The surface also enhances the mobility of water drops and reduces hydrodynamic drag.
The research reviews recent progress on ridge subduction, a key geological process involved in the generation of arc magmatism, material recycling, and metallogenesis. It highlights the significance of ridge subduction in modern oceanic plate tectonics and identifies areas for future research.
Scientists have developed a plasmonic photocatalyst with a nanocavity that accumulates charges, improving the efficiency of water oxidation reactions. The discovery could lead to more efficient conversion of renewable sunlight into useful fuels and chemicals.
Researchers develop a strategy to improve the photovoltaic performance of quasi-bilayer organic solar cells by dispersing donor components into the acceptor-dominant phase, achieving a champion PCE of 15.4%. The incorporation of donors improves charge transport balance and suppresses bimolecular recombination.
Scientists at Sun Yat-sen University and Huazhong University of Science and Technology review the history of G measurements, highlighting inconsistent results and proposing future experiments to reduce uncertainty. They also present their own latest values, achieving high accuracy and confidence levels.
Scientists have proposed a method to classify topological superconducting phases by examining the compatibility between different Majorana zero modes. They found new TSC phases characterized by Zh invariant in C4zT case and Zh Π Zc invariant in C6zT case, which can coexist with helical and chiral MZMs.
Researchers designed an energy-efficient transmission scheme for mmWave-enabled NOMA-UAV networks by optimizing UAV placement, hybrid precoding and power allocation. The proposed design achieved better performance in user fairness, spectrum efficiency and energy efficiency compared to other schemes without UAV placement optimization.
Researchers have developed a novel powder method for efficiently evaluating electro-optic coefficients, enabling the discovery of promising new crystals. The approach uses second harmonic generation, infrared reflectance spectrum, and Raman spectroscopy to predict electro-optic coefficient magnitude.
Scientists from Peking University have developed an efficient method for manipulating the electron spin using an electric field, overcoming the challenges of traditional magnetic resonance techniques. The breakthrough could lead to significant advancements in quantum information processing and the development of quantum computation units.
Scientists create self-assembly of interlocked structures, including linear [3]catenanes, Borromean rings and ring-in-ring complexes, using bithiophenyl groups as building blocks. The new method enables the formation of heterogeneous D-A ring-in-ring complex.
Researchers propose a strategy to achieve multiple responsive lasing emission states for high-security optical encryption by modulating the competition between radiative rate of donor and the rate of energy transfer in FRET microlasers. This approach enables dynamic lasing action control, resulting in distinguishable lasing states.
A new study found that Arctic tundra spring phenology has shifted due to a warmer climate, with delays in the start of growing seasons observed at high-latitude regions. The study used multiple remote sensing indices and ground observations from 2000 to 2018 to analyze spatial and temporal variations.
Researchers propose a fast and catalyst-free cross-linking strategy for constructing mechanically strengthened and biofunctional hydrogels. The new method uses o-phthalaldehyde (OPA) and N-nucleophiles to form stable linkages, reducing toxicity issues associated with traditional methods.
LONs have shown outstanding properties in designing membrane-anchored biosensors and synthetic membrane channels due to their information-transfer and self-assembly abilities. They also have great potential in making contributions to developing new therapies and controllable nanoreactors.
Researchers study crust and upper mantle velocity structure in SE Tibet to understand geodynamic processes. The study reveals three major geodynamic modes: rigid block extrusion, plastic deformation, and asthenospheric upwelling.
The application of data assimilation in Earth system science has improved observability and predictability of the Earth system. The methodology of data assimilation reflects the harmony between reason and experience.
Scientists at Soochow University successfully alter the rate-determining step of electrochemical ammonia synthesis using cobalt single clusters, achieving outstanding yield rates and Faradaic efficiency. The new strategy reduces energy loss and cuts fundamental costs for sustainable NRR systems.
Researchers have developed a magnesium alloy that can be used to treat tumors using a low-intensity magnetic field. The alloy, known as MgA, can rapidly heat up under the influence of an alternating magnetic field (AMF), resulting in effective tumor ablation.
Researchers discuss direct conversion of N2 into organic compounds via N-C bond formation, with potential applications in sustainable systems. The review highlights the challenges and limitations of current methods, but also outlines promising future research directions.
Researchers developed a new method for ammonia synthesis using nitrate contaminants as nitrogen source and water as hydrogen source. The electrocatalyst, Co/CoO nanosheet arrays, showed excellent performances with 93.8% of Faraday efficiency and 91.2% of selectivity.
The study reports a two-stage collision between India and Asia, with the Tethyan Himalaya terrane drifting northward and colliding with Asia at ~61 Ma. The findings match history of India-Asia convergence rates and provide constraints for climate models linking Himalayan orogenesis with global climate change.