Scientists have developed a 4D electric circuit network that simulates a topological insulator, exhibiting unusual properties such as quantized Hall currents and surface excitations. The work paves the way for studying topological phase transitions, non-linear effects, and quantum open systems.
Researchers found that molecule-plasmon coupling strength affects SEIRA spectral lineshapes, which are crucial for molecular detection. The study revealed how coupling distance, molecular density, and plasmon loss impact spectral profiles.
Researchers found significant changes in the Pacific Walker circulation between 54-48 million years ago, with a broadening of ~38°. The circulation's intensity increased as the climate cooled, but its location was controlled by plate movements and CO2 concentrations.
Surface doping of organic semiconductors using two-dimensional molecular crystals has been shown to improve their electronic properties. The use of 1D/2D composite single crystals enables highly controllable doping at the monolayer precision, resulting in increased mobility and reduced threshold voltage. This approach holds great promi...
Researchers discovered a Jurassic stick insect that employed mimicry by resembling ferns to protect itself from predators. The discovery reveals the earliest known specializations for mimicry and defense in stick insects, dating back 165 million years. This finding sheds light on the evolution of these remarkable insects.
PD-1/PD-L1 inhibitors have shown promise in treating non-small cell lung cancer, but the proportion of patients who benefit from these treatments is relatively small. Researchers are exploring biomarkers to identify potential beneficiaries and improve cost-effectiveness.
Researchers have developed genetically-encoded X-ray-sensitive tags for site-specific labeling of protein-of-interest in mammalian cells. This enables endogenous labeling of diverse molecules and subcellular structures with an ultrahigh spatial resolution of ~30 nm. The high photostability of these tags allows long-term observation of ...
The article introduces a new theory of detonation-driven hypervelocity shock tunnels, covering three aspects: special features, detonation driver concept, and interface-matching problem. It demonstrates the successful application of this theory in developing large-scale hypersonic test facilities.
Researchers have discovered high-Chern-number and high-temperature Chern insulator states in MnBi2Te4 devices, exceeding previous records by achieving two dissipationless edge states above 10 K. The findings have the potential to revolutionize low-consumption electronics and integrated circuits.
A bitter melon extract intervention restored TRPM5-mediated aversion to high salt stimuli, reducing excessive salt intake and improving cardiovascular damage in mice. This approach may provide a promising strategy for reducing high salt-induced hypertension and cardiac hypertrophy.
A recent study reveals that Cr(III) dominates in all sedimentary marine carbonates, contradicting previous theories on the oxidation of Earth's early atmosphere and ocean. The findings suggest that either microbial reduction or preferential uptake of Cr(III) by carbonate may be responsible for the absence of Cr(VI) in these rocks.
At 1.1 million years ago, early human inhabitants of the Nihewan Basin developed novel technological innovations to cope with strengthened aridification and changing environmental conditions. These advancements provided benefits to early hominin populations in China, highlighting their adaptability.
Researchers have designed a π-conjugated small-molecule HTL material BDT-TPA-sTh, which improves hole-mobility and wettability with the perovskite precursor solution. This enhances the efficiency of p-i-n planar pero-SCs for large-area modular devices.
Researchers used the 'gene' theory to predict new families of HTSCs in cubic zinc-blende transition metal compounds. Theoretical analysis showed a d-wave superconducting state with nodes in diagonal directions, breaking time reversal symmetry.
A recent study found a significant decrease in PM2.5 concentrations in eastern China and corresponding reductions in heavily polluted days. However, surface ozone levels have been increasing in most cities during the same period, indicating stronger photochemical pollution.
Researchers successfully image atomic nuclei in three materials using a new microscopy type called ANXRI, which combines aberration-corrected STEM and EDS. The accuracy of ANXRI reaches 1 pm, allowing for adjustable individual imaged sizes of atomic nuclei.
Researchers propose a scheme to realize selective directional coupling of near-field longitudinal waves based on inherent geometric properties and symmetry analysis. The work enables the creation of Janus and Huygens sources, which selectively couple with one side or two sides of the near-field pattern, respectively.
Researchers have introduced a new concept for designing photocatalytic systems with reversed configurations, which significantly improve light absorption, charge separation, and surface catalysis. This design concept can be extended to other systems and reactions to promote solar-to-chemical conversion.
A new article proposes a systems approach, Classification-Coordination-Collaboration (3C), to promote the overall realization of Sustainable Development Goals (SDGs). The approach consists of classification, coordination, and collaboration, which interact with each other to achieve SDG goals.
Scientists from Peking University and National Institute for Materials Science create anisotropic fluoride nanocrystals using facet-specific passivation. The approach enables controlled growth of fluorides with complex functionalities and promising applications in flexible antiferromagnetic devices and sensors.
The study reveals that Asgard archaea, particularly the newly identified phylum Gerdarchaeota, are involved in degrading various substrates such as amino acids and ethanol. They also participate in aerobic respiration, converting substrates into acetyl-CoA.
A study by Dr. Yuqin Zou and colleagues reveals that hierarchically nanostructured NiO-Co3O4 electrodes with plentiful interface defects exhibit excellent HMF oxidation activity and stability. The researchers demonstrate the positive role of cation vacancies in catalyzing the electro-oxidation process.
The 'uplift of the Tibetan Plateau' concept is debunked due to contradictory paleoaltimetric estimates, isotopic bias, and re-dating of key sites. The region's complex topography was formed before the India-Eurasia collision, with uplift beginning in the Eocene.
Researchers developed an optical brain-to-brain interface that supports fast and accurate information transmission for locomotion control. The interface uses fiber photometry to record population Ca2+ signals from identified neurons, achieving a three-fold increase in information transfer rates compared to previous BtBIs.
Scientists propose advanced engineering strategies for gas-releasing nanomedicines to enhance bioavailability and safety of therapeutic gases. These nanomedicines aim to maximize profits in gas therapy by providing controlled release and targeting cancer cells.
Conditional knockout of the mouse def gene in hepatocytes leads to cell morphology abnormality, constant inflammatory cells infiltration, and multiple tissue damage foci. Partial hepatectomy causes sudden acute death in def conditional knockout mice, which is rescued by dexamethasone treatment.
Researchers developed a hierarchically porous TiO2/rGO hybrid material, which exhibited high and stable surface area and excellent reversible capacity. The material's (001) facets facilitate Li+ insertion-extraction at low current densities, while its porosity dominates the process at high currents.
Researchers developed ultra-sensitive and stable X-ray detectors using 0D MA3Bi2I9 single-crystals, achieving low operating doses of 0.62 nGyair s-1 and high sensitivity comparable to 3D perovskite detectors. The discovery promises a promising X-ray detector candidate for medical applications.
A new photocatalytic water-splitting strategy has been developed to hydrogenate aryl chlorides in a sustainable manner. The approach utilizes water as a safe and readily available hydrogen donor, replacing flammable gases and reducing risks associated with conventional dechlorination methods.
Researchers have fabricated organic heterostructures with enormous structural diversity and novel optical/electronical properties using polymorphism. These structures exhibit multiple output channels, structure-dependent optical signals, and good optical waveguide performance.
A large cohort study found that donor lymphocyte infusion and intensified conditioning improve outcomes for patients with relapsed/refractory leukemia, achieving high 3-year leukemia-free survival rates. The study also showed that these interventions have varying impacts on different types of leukemia and donor recipients.
Researchers propose Anticipated Learning Machine (ALM) for precise future-state predictions based on short-term data. ALM efficiently reconstructs dynamics even with a small number of samples by constraining to a low-dimension space.
Researchers have developed a new type of oxygen reduction catalyst using nitrogen-doped porous carbon supported Fe single atom catalysts. These catalysts outperform commercial platinum-based catalysts in terms of ORR activities, stability, and methanol resistance.
Researchers propose a new framework to quantify the predictability of temporal networks, which encodes the ordering and causality of interactions between nodes. The study found that the contributions of topology and temporality to network predictability vary significantly across different types of real networks.
Recent advances in the synthesis of hierarchically mesoporous TiO2 materials are reported, highlighting their potential applications in energy storage and environmental protection. The review covers various synthetic strategies and discusses the challenges and future directions of research in this area.
Researchers at Peking University and Chinese Academy of Sciences discover atomic mechanism of spin-valve magnetoresistance at asymmetry SrRuO3 grain boundary. The study reveals a new strategy to create 2D magnetic order in grain boundaries, which can dominate response in nanoscale devices.
Scientists have developed single-electron pumping devices in ZnO nanobelt transistors, enabling controlled single- and double-electron pumping at room temperature. This breakthrough has significant implications for spin-based quantum computing and quantum information processing.
Researchers have created a new Pt-based catalyst using the 'composite energy trap' model, which effectively inhibits migration and agglomeration of loaded nanoparticles. The model catalyst retains high activity even after aging at 1000°C, offering promising results for sintering-resistant nano-catalysts.
Researchers developed a unique film-based photosensitizer that efficiently produces singlet oxygen with enhanced photochemical stability and visible light absorption, paving the way for practical applications in sterilization, water purification, and PDT.
Researchers observe the atomic growth way of Pt3Ni-Ni(OH)2 core-shell structure at gas-liquid interface using in-situ liquid cell TEM. Experiment results reveal underlying growth and transformation mechanisms, shedding light on rational design of metal-2D core-shell structures.
A U-shaped relationship was found between egg consumption and the risks of incident CVD and total death among general Chinese. Consumption of 3-6 eggs/week was associated with the lowest risk. Higher or lower egg intake was linked to increased cardiovascular disease and mortality risks, respectively.
A new graphene-based actuator swarm can enable programmable 3D deformation, expanding capabilities of smart devices. The swarm integrates SU-8 pattern arrays with GO to achieve active and programmable deformation under moisture actuation.
Researchers have developed a new method to reconstruct formation paleo-pressure in sedimentary basins by integrating various paleo-pressure calculation methods. The study focuses on three case studies: Sinian strata in the Sichuan Basin, Ordovician strata in the Tarim Basin, and Permian strata in the Sulige Gas Field in the Ordos Basin.
A new study reveals that dams in the upper Mekong River increase downstream nutrient bioavailability, contrary to the widespread assumption. The cascading effect of reservoirs increases hydraulic residence time and leads to a shift in phytoplankton species composition.
A new vaccine against African swine fever (ASFV) has been developed using a seven-gene-deleted virus. The vaccine, HLJ/18-7GD, was found to be safe and effective in pigs, providing long-lasting immunity against the disease. It is also non-pathogenic and does not pose a risk of transmission to other animals.
Graphite has been found to be intrinsically lithiophilic at 500K, contradicting previous conclusions that it was lithiophobic. The study uses ab initio molecular dynamics simulation and shows that surface chemistry plays a key role in the wetting performance of Li metal on graphite.
The study reveals that applying strain to monolayer AlN crystals can enhance the efficiency of even and odd harmonics radiated under ultrafast laser excitation. Researchers found that strain-dependent electronic transitions result in different harmonic spectra, providing a new reference for studying semiconductor dynamics.
Researchers have discovered remarkably well-preserved cartilage cells linked by an intercellular bridge and containing internal dark structures morphologically consistent with chromosomes. The team also found evidence of original molecules preserved in the dinosaur's cartilage, including a reaction to antibodies of Collagen II.
Researchers have discovered quasi-1D surface superconductivity in TaIrTe4, a type II Weyl semimetal. This finding offers a novel platform for exploring topological superconductors and may contribute to the development of topological quantum computation.
Researchers have found a new noncentrosymmetric superconductor, CaPtAs, exhibiting unusual properties and potential for studying unconventional superconductivity. The discovery offers new opportunities to explore the effects of broken inversion symmetry on superconducting gap structure.