Articles tagged with Materials
Scientists have discovered a material that can harness waste heat, increasing energy efficiency and sustainability. The researchers found that thinner cadmium arsenide films exhibit higher thermoelectric sensitivity, allowing for more efficient cooling in cryogenic environments.
Researchers developed a thin gold membrane with pores to selectively amplify Raman signals from surfaces, enabling the study of surfaces for the first time. This breakthrough improves the efficiency and degradation behavior of batteries, catalysts, and solar cells.
Researchers have discovered that gallium's bonds disappear at melting point but reappear at higher temperatures, leading to a new explanation for its low melting point. This breakthrough has important implications for advances in nanotechnology and materials science.
Glassy gels are a new class of materials that combine the properties of glassy polymers and gels, with unique characteristics including high elasticity and adhesive surfaces. The materials were created by mixing liquid precursors with an ionic liquid, resulting in a hard yet stretchable material.
A new sensor was developed using g-C3N4 nanosheets incorporated Ag nanoparticles loaded Er0.05La0.95FeO3 heterojunctions, showing superior sensitivity for isoamyl alcohol at 20% RH and optimal operating temperature of 225°C. The sensor exhibited excellent selectivity, repeatability, and long-term stability.
Researchers developed a new method to identify altermagnets using X-ray magnetic circular dichroism (XMCD) and theoretically predicted its fingerprint. The approach was successfully applied to manganese telluride (α-MnTe), revealing the material's hidden fingerprint of altermagnetism, which could accelerate spintronics applications.
Researchers have investigated the influence of carbon content on the microstructure and mechanical properties of multi-component carbide ceramics. The study found that reducing carbon content induces phase decomposition, leading to improved hardness and strength compared to single-phase high-entropy carbides.
A team of material scientists report the transition from single phase to multiple phases in multi-component (TiZrVNb)C ceramics by adjusting V content. The addition of V element induces significant changes in microstructure and mechanical properties, including lattice distortion and mixed enthalpy.
Researchers from Shinshu University have created a novel composite material with exceptional capabilities for motion and physiological sensing. The new sensor design showed significant performance and stability improvements, enabling practical use in wearable applications.
Perovskites-based ferroelectric ceramics have garnered attention for their superior stability, high energy density, and high power density. The team outlines a combinatorial optimization strategy to tailor ferroelectric hysteresis loops, increasing energy storage performance.
Researchers at Tsinghua University Press created a permeable thermoelectric film with superior moisture permeability and excellent electromagnetic interference (EMI) shielding performance. The composite film was used in sensors, demonstrating effective touch and breathing sensing capabilities.
Researchers developed composite ceramics using boron nitride microribbons, resulting in improved mechanical properties, dielectric constant and thermal conductivity. The BN-based composites showed increased fracture toughness, bending strength, and thermal conductivity compared to pure alumina ceramics.
Researchers synthesized high-crystallinity nitrogen-rich carbon nitride nanosheet photocatalysts to improve charge separation for hydrogen evolution. The discovery of bound-state electrons synergy and electron capture sites led to a significant enhancement in photocatalytic activity.
Researchers at Osaka Metropolitan University developed a machine learning-based deicer that offers higher performance while minimizing environmental harm. The new mixture of propylene glycol and sodium formate solution shows improved ice penetration capacity, reducing the need for substance use.
A new strategy to create porous ceramic supports with high mechanical strength and porosity has been developed by researchers. The strategy, known as reverse particle grading, involves introducing coarse particles into fine particles to distribute stress and prevent crack formation.
Researchers found that Y2O3 adds solubility to the ceramics, suppressing secondary phases and improving transparency. The study also discovered that Y substitution reduces Verdet constant and thermal conductivity, with potential applications in magneto-optical ceramics for Faraday isolators.
A team of researchers from Japan have employed an innovative technique to directly observe the origin of FSDP and the atomic density fluctuations in silica (SiO2) glass. The study reveals alternating arrangements of chain-like columnar atomic configurations and interstitial tube-like voids.
Researchers developed a low-temperature process to create rutile TiO2 nanoparticles with distorted crystal lattice, leading to improved photocatalytic degradation of tetracycline hydrochloride under visible light illumination. The study found that the sample had a 71% increased efficiency compared to commercially available rutile TiO2.
Researchers have developed a novel material that can produce green hydrogen through photoelectrocatalysis, a process driven by sunlight. The material, composed of polyaniline nanostructures and carbon nanotubes, demonstrates enhanced light absorption and stability, making it an attractive candidate for the future of fuel production.
A team of material scientists has proposed a solution to the 'polarizability-scalability-insulation robustness' trilemma by using an ultrathin film of ferroelectric oxide in its superparaelectric state, achieving stable k value down to 0.46 nm and excellent dimensional scalability.
A team of researchers at Nagoya University has developed a novel method to seal cracks and fractures in rocks using a concretion-forming resin. The resin holds its shape and seals flow-paths rapidly, withstanding six earthquakes in a test period, making it more durable than conventional cement-based materials.
A new method for visualizing molecular orbitals has been developed, enabling scientists to analyze molecular dynamics and deformations in molecular films more easily. The technique, called PhaseLift-based photoemission orbital tomography (POT), allows for precise visualization of electronic states with a single set of measurements.
The study improves the plasticity of oxide ceramic green bodies by adding glycerol and polyethylene glycol to the PIBM gel system. The addition of these water-soluble plasticizers influences the interaction between PIBM molecules, modifying the gel network structure and alleviating particle contact.
Researchers developed a new component, sepiolite, to improve braking effectiveness in high-speed rail brakes. Sepiolite exhibits high-temperature lubricity, weakening bonds between its layered structures, and accelerates the formation of a surface lubricating film, providing stable friction at high temperatures.
Researchers aim to create polymers that can form the basis of effective sensors for applications in physiological, environmental, and Internet of Things monitoring. The goal is to increase energy efficiency and broaden material choices, enabling devices to operate at low voltage and interact with ions and transport ionic charges.
A systematic investigation by Osaka Metropolitan University calculated 120 combinations of alloy elements with carbon and nitrogen to form bonds in steel. The results showed that specific arrangements of elements harden the iron, improving durability and material strength.
Researchers at Shandong University have developed lightweight, low-dielectric constant, and low-loss microwave dielectric ceramics featuring a strongly covalent phosphate framework. These materials exhibit exceptional performance, including high-quality factor values and low density, making them suitable for RF devices.
Researchers develop a new method to grow single-crystal perovskite hydrides, allowing for accurate measurement of intrinsic H- conductivity. The technique enables the production of high-quality crystals with minimal imperfections, paving the way for sustainable energy technologies and hydrogen storage applications.
Researchers at Linköping University developed a new method to dope organic semiconductors using air as a dopant, enhancing conductivity and modifying semiconductor properties. The process involves dipping the material in a salt solution and illuminating it with light, resulting in a p-doped conductive plastic.
Researchers developed a ceramic-based temperature sensor with excellent performance, stability, and accuracy, suitable for in-situ monitoring of high temperatures in extreme environments. The sensor's low oxidative rate constant and volatilized rate constant guarantee its resistance to corrosion and oxidation.
A Binghamton University professor investigates the adaptive response of fire ant rafts to mechanical load, discovering that they exhibit catch bond behavior under force, which enhances cohesion for survival. This phenomenon is being explored to develop artificial materials with autonomous self-strengthening properties.
A new device uses small amounts of light to process information, offering significant energy improvements over conventional optical switches. This technology could enable quantum communications, providing a promising alternative for data security against rising cyberattacks.
Researchers have discovered a new thermal barrier material, CrTaO4, which improves the oxidation resistance of high-entropy alloys. The material displays elastic/mechanical properties comparable to yttria-stabilized zirconia (YSZ), making it a promising candidate for refractory metals and ultra-high temperature ceramics.
The study found that an 80% concentration of zirconium dioxide (ZrO2) and specific solvents leads to the highest pattern transfer efficiency. The conversion efficiency reaches impressive levels in the ultraviolet spectrum, paving the way for commercial viability of metasurfaces.
Researchers found a new solid-state reaction process between different multicomponent phases during ablation, leading to improved thermodynamic stability and enhanced ablation performance. The composition evolution allowed the underlying phases to remain stable under higher oxygen partial pressures.
Researchers developed a novel 3D printing technology that can print multi-material tubular structures as thin as 50 micrometers. The technology, called Polar-coordinate Line-projection Light-curing Production (PLLP), uses a rotating mandrel and patterned light illumination to create complex structures.
A research team at Waseda University has discovered a family of poly(thiourea)s (PTUs) with exceptional optical properties, including transparency over 92% and a refractive index of 1.81. The polymers can be easily degraded into simpler molecules, making them suitable for sustainable optoelectronic applications.
Scientists created highly conductive B4C–TiB2 composites by optimizing particle size, achieving excellent conductivity and mechanical properties. The method reduces production cost and provides a new strategy for regulating microstructure and properties.
Researchers developed a high-throughput multiscale evaluation method to quantify and visualize thermal stress in thermal barrier coatings. The approach considers phase transition of ceramic layers, providing a theoretical basis for life prediction and reverse design of coating materials.
Disposable vape sales quadrupled in the UK between 2022 and 2023, contributing to e-waste accumulation. The technology contains valuable resources like lithium, but recycling is often difficult due to lack of clear instructions. Experts call for urgent reform of disposable electronics practices to protect the environment.
Researchers develop non-equivalent co-doped strategy to reduce oxygen vacancy defects and improve comprehensive electrical properties of BIT-based high-temperature piezoelectric ceramics. The study reveals a significant enhancement in piezoelectric coefficient, Curie temperature, and resistivity at high temperatures.
Researchers discovered an alloy with exceptional strength and toughness across a wide temperature range, outperforming even cryogenic steels. The alloy's unique properties are attributed to the formation of rare kink bands that enable it to resist bending and fracture.
A new NIR phosphor with broadband emission, high luminous efficiency, and thermal stability has been developed for multi-functional applications. The phosphor is composed of Cr³⁺ activated in Y₂Mg₂Al₂Si₂O₁₂ host materials, showing potential for night visualization, bio-imaging, and non-intrusive detection.
Researchers upgraded a photoelectron momentum microscope to use two undulator beamlines, enabling element-selective measurements and precise analyses of valence orbitals. This innovation provides deeper insights into the behavior of electrons in materials, advancing fields like condensed matter physics and materials science.
The team created ten holograms with varying colors and shapes using an inverse design technique driven by artificial intelligence. They integrated an oblique helicoidal cholesterics-based wavelength modulator to accurately implement the designed holograms, enabling the establishment of an optical security system.
Researchers at Linképing University have developed a digital display screen where LEDs react to touch, light, fingerprints, and the user's pulse, among other things. The screen can also be charged through the screen due to its ability to act as solar cells.
Scientists developed a force-controlled release system harnessing natural forces to trigger targeted release of molecules, advancing medical treatment and smart materials. The breakthrough uses rotaxane technology to release multiple functional molecules simultaneously, including medicines and healing agents.
Scientists developed a printable, bio-based aerogel using cellulose that is biocompatible, has high porosity, and excellent heat-insulating properties. Its anisotropy allows for controlled thermal conductivity and precise applications in medicine and microelectronics.
The new metafluid can transition between Newtonian and non-Newtonian states, allowing for programmable viscosity and compressibility. The researchers demonstrated the fluid's capabilities in a hydraulic robotic gripper, picking up objects of varying weights without crushing them.
A team of researchers has created a new photocatalyst that can effectively remove pollutants from water. The Mn₀․₅Cd₀․₅S/BiOBr S-scheme photocatalyst features rich oxygen vacancies, which improve its photocatalytic performance.
The researchers developed a novel tri-layer film structure that improves the energy storage density, efficiency, and stability of ferroelectric capacitors. The sandwiched film features a large energy density and high efficiency, with outstanding cycling stability up to 10^9 cycles.
Scientists create high-throughput automation to calculate surface properties of crystalline materials using established laws of physics. This accelerates the search for relevant materials for applications in energy conversion, production, and storage.
Researchers develop an effective method to improve energy storage performance in (Bi0.5Na0.5)TiO3-based lead-free relaxor ferroelectrics by utilizing high-entropy concept and A-site disorder. The new approach enhances ion disorder, forming isolated polar nanoclusters that promote good energy storage performance.
Researchers created Al2O3 composite ceramics with B4C@TiB2 core-shell structural units, achieving improved fracture toughness due to multi-dimensional synergistic toughening behavior. The resulting ceramics yield a fracture toughness of up to 6.92 MPa·m1/2.
Researchers from Pohang University of Science & Technology developed an economical and efficient water electrolysis catalyst using oblique angle deposition method and nickel. The catalyst resulted in a remarkable 55-fold improvement in hydrogen production efficiency compared to traditional thin film structures.
Researchers from Tokyo University of Science developed a flexible paper-based sensor that operates like the human brain, enabling low-power and efficient health monitoring. The device can distinguish 4-bit input optical pulses and generate currents in response to time-series optical input, with rapid response times.
Researchers have found that the PTPσ-expressing growth cone senses extracellular matrix and drives neuronal migration in injured brains, leading to functional recovery. The study also shows that growth cones can be reversed to promote neuronal migration using heparan sulfate.
Multi-component liquid-infused surfaces offer dynamic adaptability, enabling various applications from medical devices to carbon-capture systems. Researchers explore the potential of these advanced coatings, highlighting their versatility and game-changing properties.
Researchers from Songshan Lake Materials Laboratory have developed amorphous soft magnetic composites with improved properties for use in next-generation electronics. The critical state approach enables the creation of strong yet efficient magnetic materials, paving the way for more efficient power transmission and storage.
Researchers at Linköping University developed improved neutron mirrors coating silicon with iron and silicon mixed with boron carbide to increase efficiency in material analysis. This enables more neutrons to reach instruments, improving experiments.