Researchers have developed a new polymeric binder that enhances the mechanical strength and stability of sulfide solid electrolyte membranes. This breakthrough improves the energy density of all-solid-state lithium batteries, enabling longer cycle life and higher performance.
A new study directly measures the rowing force of a water strider's middle leg using a bio-appropriating probe, obtaining a force of 955 µN. Indirect measurement via image analysis yields a lower force of 488 µN. The study enhances understanding of water repellency and applications in biomechanics and biology.
Researchers have optimized thermodynamics and kinetics of Mg-In-Ti hydrogen storage system, improving de/hydrogenation properties. The study aims to combine advantages of MXenes and In alloying for simultaneous alteration of Mg-based hydrogen storage materials.
Researchers developed a high-efficiency mercury removal photocatalyst by constructing a Z-scheme heterojunction of g-C3N5 and Bi5O7I. The unique structure enhances the separation and migration of electrons and holes, improving photocatalytic activity.
A hierarchical platoon control framework is designed to address the influence of external disturbances on CV platoons. The ISM controller eliminates disturbance effects, ensuring stability and string stability in the platoon. Numerical simulations demonstrate the effectiveness of the control strategy.
Scientists develop a novel deployment scheme for a 3-body chain-type tethered satellite system, utilizing sequential deployment and hierarchical sliding mode control to ensure accurate trajectory tracking. The proposed scheme simplifies the deployment process while guaranteeing positive tension and avoiding tether rupture.
Researchers investigate the interaction between solar wind and the Moon's surface, exploring the formation of lunar swirls and the influence of magnetic fields. The study highlights the importance of interdisciplinary research in understanding the Moon's space environment.
Researchers create a legged small celestial body landing mechanism that can land stably in different conditions, including varying gravity and slopes. The study found that key factors such as cardan element damping, foot anchors, retro-rocket thrust, and landing slope affect the landing performance.
Researchers at Beijing Institute of Technology propose a human-like variable admittance control method to increase the safety, robustness, and adaptability of robot space assembly. The team successfully verified the effectiveness of their method through space satellite assembly simulation verification.
Researchers investigated two strategies to improve the cycling performance of all-solid-state batteries. The first strategy involves coating the cathode surface, which improves electrochemical performance, but the second strategy using halide electrolytes shows promise despite its limitations. The study suggests that a combination of b...
A team of scientists has investigated the effect of initial temperature on Li dendrite morphology through temperature-dependent ionic diffusion coefficient, reaction coefficient, and conductivity. They found a unified picture for the seemingly contradictory dendrite-promoting and dendrite-inhibiting effects of increased temperature in ...
Researchers have created a hierarchically porous bifunctional catalyst that enhances the transport of reactants and products in zinc-air batteries. The pyrolysis-free strategy allows for improved durability and efficiency, making it an important step towards commercializing this technology.
Researchers examine the complex interactions between solar wind and the Moon's surface environment, including small-scale magnetic fields, lunar swirls, and regolith layer dynamics. The study highlights the need for further in-situ observations to understand these processes and their implications for human activities on the Moon.
The incorporation of HsGDY into cathode promotes the absorption and conversion of lithium polysulfides, providing new ideas for high-energy density lithium-sulfur batteries. Ni foam facilitates large specific capacity and long-term stability at high current densities.
Scientists initiate high voltage multi-electron reactions in NASICON cathodes to enhance the performance of aqueous zinc/sodium batteries. The study proposes using transition metal ion substitution to augment structural stability and increase capacity, offering a promising strategy for advancing the technology.
Researchers propose a reinforcement learning-based approach to optimize multi-impulse linear rendezvous trajectories, achieving faster computation times and improved fuel efficiency compared to traditional numerical optimization methods. The algorithm uses an actor-critic architecture and advantage-weighted learning to accelerate train...
Researchers investigate impact of different geometric porosities on aerodynamics of supersonic parachutes. The study reveals that porosity structures have little effect on flow field mode and pressure distribution, but affect drag performance, with single-seam models showing better stability.
The Tiangong space station features a T-shaped configuration with three modules: Tianhe, Wentian, and Mengtian. It boasts advanced technologies, including a large-area flexible solar array system, physicochemically regenerative life support systems, and robotic arms.
Researchers reviewed techniques for Jupiter capture trajectories, including satellite-aided captures and multiple-satellite-aided captures. They also examined tour trajectories of Galilean moons using patched-conics models and three-body trajectory designs.
Scientists proposed an adapted Mars ISRU system to produce oxygen for ascent propellants and life support. The system's performance was modeled with various control options, optimizing cell voltage and flow rate while minimizing carbon formation risks.
Researchers propose surface modification and novel structural designs to stabilize Li-rich cathodes in solid-state batteries. The review discusses potential solutions for interfacial ion and electron transfer issues.
Researchers identified hexagonal ZrB2O2-Cr as an excellent platform for electrocatalytic nitrogen reduction reaction, showing ultra-low limiting potential and high selectivity. The origin of high activity is attributed to the synergistic effect of single atom and metal atoms in the substrate.
Researchers have developed a high-energy cathode, Na4MnCr(PO4)3, capable of three-electron reactions. The material exhibits an ultra-high energy density of 523.6 Wh kg^-1, outperforming existing phosphate cathodes.
Researchers optimize micronozzle design through numerical simulation and design optimization to improve thrust force and specific impulse. The study finds that wall heat transfer, convergence duct design, throat shape, and expander structural parameters significantly affect nozzle performance.
Researchers developed magnetic microrobots with folate targeting for enhanced cancer cell targeting and inhibition. The system consists of biodegradable gelatin methacryloyl-based ABF microhelix and FA-loaded Fe@ZIF-8 nanoparticles, which can deliver therapeutic drugs like DOX into cells via receptor-ligand-mediated endocytosis.
The study improves the assessment of catastrophic failures in sealed cabins for ultra large manned spacecraft in M/OD environments. The authors develop a failure assessment module and establish perforation and crack equations for stuffed Whipple shields, providing a reference for designing and assessing long-term on-orbit missions.
Researchers propose a deep neural network-based method for calibrating 4-quadrant analog solar sensors, reducing errors by up to 0.25° (3σ). The approach uses cubic surface fitting and deep feedforward neural networks to approximate the actual error model and correct errors effectively.
Researchers confirm hydrogen inhalation improves brain function and alleviates pathological damage caused by hindlimb unloading. The study suggests a potential protective measure for astronauts during spaceflight, involving changes in PGC-1α and BDNF expression.
Researchers developed double perovskites with Cs2AgInCl6 composition, doped with Eu3+ and Bi3+, to achieve high photoluminescence efficiency (PLQY) of up to 80.1% in white light emission. The optimal doping concentrations for Bi3+ and Eu3+ ions were found to be 0.5% and 6%, respectively.
Researchers investigate Metal-Organic Frameworks (MOFs) and MXene, a two-dimensional material, for enhanced electrochemical properties. The hybrid materials show improved performance in various energy storage and conversion applications.
The Tianzhou cargo spacecraft is a Chinese automated cargo spacecraft designed to support space station operation by transporting supplies. Its main tasks include transporting and storing supplies, controlling the orbit and attitude of the combined body, and supporting the development of space applications.
A novel robotic bronchoscope system is developed to diagnose and biopsy pulmonary lesions, enabling early detection of lung cancer. The system features a flexible end effector and navigation system for accurate positioning and visualization.
Researchers evaluate ChatGPT's potential in assisting computational materials science tasks, including building atomic structures and running DFT calculations. While the tool shows promise, it still faces limitations and ethical concerns.
Space-based gravitational wave observatories offer longer arm lengths, enabling detection of low-frequency GWs. Configuration design and stability control are key factors for success, with geocentric configurations showing promise due to their simplicity and ease of deployment.
A new method using a back propagation neural network improves the accuracy of orbit prediction and position error covariance prediction for space targets. The method reduces prediction errors by up to 170m compared to existing models.
Researchers have discovered halide electrolytes with relatively wide electrochemical stability windows and good compatibility with cathodes. These findings provide a new strategy for designing solid-state batteries using lithium halide solid electrolytes.
Numerical simulations reveal that spherical particles grow with dynamic oscillation during electrodeposition, influenced by applied electrical potential difference, electrolyte concentration, and diffusion coefficient. The oscillation state results from a competition between electrochemical reactions and ion transport.
Recent planetary missions have revealed significant advances in our understanding of Mercury's metal composition and magnetic field, as well as Venus' dense atmosphere and geological activity. On Mars, the InSight mission has detected marsquakes, suggesting a similar internal structure to Earth.
Key laboratory conducted a literature review on microfluidic actuated and controlled systems for lab-on-chip applications in space life science. The research highlights the challenges and advancements in microfluidic chip technology, including micropumps and microvalves.
A new algorithm was proposed to predict a satellite's attitude without sensor data, crucial for debris tracking and damage reduction. The method uses quaternions and an extended Kalman filter to estimate the satellite's state, followed by a neural network to extract unmodeled environmental torque.
Researchers designed unique NiS2/FeS heterostructures to address sodium-ion battery drawbacks, exhibiting improved high-rate performance and cycling stability. DFT calculations confirmed the enhanced performance due to the strong internal electric field at the interface.
Researchers at Beijing Institute of Technology have developed new cathode materials using borophene to overcome the limitations of traditional aluminum anodes. The study reveals that coordination with chlorine ions enhances electron transfer, leading to increased capacities and improved cycling performance.
Researchers propose three protection strategies for lithium metal anode to improve Li–S battery cycling stability. The strategies aim to reduce polysulfide concentration, reaction activity, and enhance uniform plating/stripping of Li metal anode.
Researchers developed a novel, efficient, and low-cost strategy to eliminate surface impurity phases in layered nickel-rich materials. The use of acidic treatments with boric acid has been shown to improve the electrochemical performances and reduce capital costs.
Researchers explore interfacial engineering to improve the stability and performance of flexible perovskite solar cells. By modifying interfaces, they can passivate defects, control stress and oxidation, and enhance charge extraction and transport.
Transition metal nitrides (TMNs) show high intrinsic electrocatalytic activities on hydrogen evolution reaction (HER), thanks to their unique electronic structures and properties. Recent strategies like facet, alloying, doping, vacancy, heterostructure, and hybridization have improved TMN performances.
A new low-tortuosity electrode design for LMO batteries improves lithium-ion diffusion, reduces concentration polarization, and alleviates irreversible phase transitions. This structure gives the battery excellent rate performance and cycling stability, making it a competitive cathode material.
Two crops, celery and cordifolium, were cultivated using reused medium from domestic wastewater and standard Hoagland nutrient solution. The results showed that the reused medium was effective in promoting plant growth, with cordifolium exhibiting better performance than celery, despite initial salt toxicity issues.
Researchers propose using Earth's karst caves to simulate extraterrestrial lava tubes, demonstrating feasibility in structure and environmental aspects. Karst caves are comparable in size and provide mild environments, reducing energy consumption in terms of heat control.
Researchers developed a new protective layer to stabilize Zn anode in aqueous Zn-ion batteries, improving cycling performance and lifespan. The NTP-C coated Zn electrode exhibits high corrosion potential, low nucleation overpotential, and stable cycling performance.