Articles tagged with Microstructures
A team of researchers, led by Ling Li from Virginia Tech, has discovered the key strategies behind the strength and toughness of sea urchin exoskeletons. The study reveals that a balance between branch connection nodes and pore size is critical to the material's damage tolerance.
Scientists at Osaka University have created a new material that could replace traditional plastics with a sustainable, biodegradable alternative. The cellulose nanofibers were engineered to exhibit direction-dependent properties, allowing for facile molding into complex structures such as microneedles and bio/nanotechnology architectures.
A German Research Foundation-funded research unit is developing switchable polymer gels for biomaterial applications, including tissues for biotechnological or biomedical uses. The team has successfully explored the nature of amphiphilic co-networks and will now focus on material design.
Researchers developed in-situ Ni alloying method to tailor microstructure and enhance strength of LAAM Ti-6Al-4V alloy. The results show that Ni addition increases yield strength and tensile strength while decreasing ductility.
The study reveals that calcium oxalate crystals are responsible for the formation of microscopic cavities in fossilized leaves. The researchers found clear parallels in closely related species, suggesting a biological function for the crystals.
Researchers at Heidelberg University developed 3D printed microscopic octopuses with 'life-like' properties using smart polymers. These structures can be tuned on demand and have dynamic chemical bonds that allow them to grow and harden in a few hours, enabling complex micrometric structures.
A Kessler Foundation study found a relationship between rate of cognitive fatigue in MS and microstructural brain changes, particularly in white matter tracts and basal ganglia. The study's findings hold promise for advancing clinical interventions for disabling fatigue.
A study at Brigham and Women's Hospital found that war-zone related stress can alter the brain's limbic gray matter regions, affecting basic emotions and drives. These structural changes are associated with cognitive functioning, including improved verbal short-term memory and processing speed.
Researchers at the University of Illinois have developed a new method to capture and predict the fatigue strength of metallic materials using automated high-resolution electron imaging. This approach allows for rapid prediction of metal failure and breakage, leading to design of safer and more resilient materials for various applications.
At extremely high speeds, friction decreases wear due to uneven heat distribution on the surface. The outermost layer of metal is damaged while deeper regions remain intact. This effect has implications for high-speed applications such as E-mobility and aircraft.
Researchers at Shibaura Institute of Technology developed an optimized recipe to retain superconductivity in bulk MgB2 by enhancing its critical current density. By combining sintering conditions with controlled addition of nanometer-sized amorphous boron and dysprosium oxide, the team achieved a superior critical current density.
The Human Brain Project has identified seven new areas in the insular cortex using statistical mapping of cytoarchitecture, providing new insights into its structural organisation. The findings are now available online for future studies addressing relations between structure and function in this complex brain region.
A newly developed polarizer-embedded metalens microscope system achieves high-quality, wide-field imaging with a large depth-of-field, significantly expanding human eyesight to the microworld. The chip-scale device offers a thousand-fold reduction in volume and weight compared to traditional microscopes.
Researchers at Hebrew University have developed a new method using quantitative MRI to diagnose early-stage Parkinson's disease. This technique reveals biological changes in the brain, enabling early diagnosis and monitoring of treatment efficacy.
The University of Houston research team has successfully developed a method for 3D printing organic semiconductor devices using multiphoton lithography, enabling the creation of highly conductive microstructures. The technology has potential applications in emerging fields such as nanoelectronics and bioelectronics.
Scientists at HZB created sintered porous silicon-aluminum nanomaterials with reduced thermal conductivity using a novel process. The resulting materials have tiny pores, crystalline nanoparticles, and domain boundaries that suppress heat conduction.
Researchers from Korea Maritime and Ocean University have developed a way to synthesize high-performance functionally graded materials with minimized defects. By controlling the mixing gradient of component materials, they improved mechanical properties and eliminated interfacial cracks.
Researchers have discovered a way to mitigate significant losses in spin current transport by integrating an atom-thin insulator between materials. This innovation has important implications for energy-efficient and ultra-fast storage technologies, as well as applications in terahertz emitters and other spintronic devices.
Researchers from Harvard John A. Paulson School of Engineering and Applied Sciences have developed a single-material, single-stimuli microstructure that can outmaneuver even living cilia. These programmable structures could be used for soft robotics, biocompatible medical devices, and dynamic information encryption.
Osaka University researchers have created a nanocellulose paper semiconductor with 3D network structures that can be tuned for use in various sustainable electronic devices. The treatment process allows for heat-induced conductivity without damaging the nanostructure, enabling flexible macro-scale structures and detailed designs.
Researchers at UC Berkeley have developed a new way to 3D-print glass microstructures using computed axial lithography (CAL), which produces objects with higher optical quality and design flexibility. The CAL process enables smooth surfaces and complex geometries, making it ideal for manufacturing microscopic glass objects.
Researchers have successfully created high-quality, crack-free microstructures on silicon surfaces in the ductile regime using elliptical vibration cutting. The technique allows for high-aspect-ratio feature generation with minimal interference, enabling structural coloration and potential applications in displays, sensing, and more.
Researchers at NTU Singapore have created a rapid and affordable method to evaluate the microstructure of 3D-printed metal alloys, providing insights into strength and toughness. This technology can benefit industries such as aerospace, where quality assessment is critical for maintenance and repair.
Researchers at the University of Nottingham have developed a groundbreaking technology to measure the microscopic elasticity of materials. By analyzing the speed of sound across the material's surface, they can reveal the orientation and inherent stiffness of small crystals, which is essential for material performance.
Researchers at City University of Hong Kong have discovered a super-elastic high-entropy Elinvar alloy that retains its stiffness even after being heated to 1000 K. The alloy's unique structure and chemical composition allow it to store a large amount of elastic energy, making it suitable for high-precision devices in aerospace enginee...
Researchers at Aarhus University have developed a simple analytical model to predict chip formation and optimize surface finish in manufacturing processes. The study reveals the critical cutting depth for almost every material, tool geometry, and running conditions, minimizing tool wear and improving product quality.
A flexible and easy-to-use micropen setup is capable of directly writing on surfaces to a microprecise level. The device allows for the printing of microarrays, lines, curves, and other structures in real-time using biomaterial or conductive ink.
A team of researchers used CARS microscopy to analyze the fat arrangement in foie gras and duck pâté. They found that foie gras had a harder, more brittle texture due to its irregularly shaped fat network. The study provides new insights into the relationship between microstructure and food texture.
The study found that certain grain boundaries in strontium titanate exhibit enhanced thermal expansion, leading to potential material failures. This discovery highlights the importance of grain boundaries in material properties and has implications for selecting suitable materials for various applications.
Researchers from South Ural State University and international universities reviewed over 200 sources to identify parameters that extend tool life in superalloys. The study suggests various methods, including tool tip texturing, flood cooling, and hybrid machining, to reduce wear and improve surface integrity.
The new system can produce high-quality images comparable to those of conventional cameras, with a compact design suitable for minimally invasive endoscopy and full-scene sensing. This breakthrough could revolutionize medical imaging and robotics with size and weight constraints.
Researchers from Germany and Spain successfully create a uniform two-dimensional material with exotic ferromagnetic behavior known as easy-plane magnetism. This discovery opens up new possibilities for spintronics, a technology that uses magnetic moments instead of electrical charges.
Researchers from City University of Hong Kong created a new titanium-based alloy using additive manufacturing, boasting unprecedented structures and properties. The alloy exhibits high tensile strength, excellent work-hardening capacity, and is up to 40% lighter than stainless steel, making it suitable for various structural applications.
Researchers have found that a conventional model for predicting material microstructure does not apply to polycrystalline materials. They used near-field high energy diffraction microscopy (HEDM) to study grain boundaries, revealing that the model's predictions are inconsistent with experimental data.
Researchers from KIT and TU Darmstadt developed a novel sensor for gas molecules by combining a graphene transistor with a customized metal-organic coating. The sensor selectively detects ethanol and responds to neither other alcohols nor humidity.
Researchers from Osaka University introduced a non-contact quality control technology to 3D printing by detecting fine-scale defects below the surface of 3D-printed metal assemblies. They used laser ultrasonics to uncover small defects that are frequently difficult to image.
A multidisciplinary team of Lehigh University researchers will conduct experiments on thermophoresis in complex fluids for bioseparations at the International Space Station. The team hopes to understand how temperature gradients affect particles and improve virus separation techniques with potential societal impact.
Researchers have discovered a new material that can produce beautiful optical phenomena, including concentric rainbows. The technology has potential applications in aiding autonomous vehicles in recognizing traffic signs, particularly in real-world conditions.
A team of researchers from the University of Science and Technology of China developed a super-elastic porous carbon material called 'carbon spring' with both high compressibility and stretchability. This unique microstructure enables reversible tensile and compressive deformation, similar to a real metallic spring.
Researchers from Skoltech and KU Leuven used machine learning to reconstruct 3D micro-CT images of fibrous materials, overcoming the difficulties faced by humans in analyzing these complex materials. The team employed GANs to fill a gap in available inpainting tools, enabling precise material analysis and simulation.
Researchers analyzed spoken and sung verbal snippets with corresponding drum and song excerpts, finding high acoustic correlation between talking drums and Yorùbá language. The study also explores the connection between music and speech, shedding light on the relationship between auditory communication and language evolution.
A recent study published in PLOS ONE suggests that physical activity can improve cognitive function in older adults by altering brain microstructure. The research, which analyzed MRI scans of 318 brains post-mortem, found a positive correlation between physical activity and increased cortical thickness.
The beetle's exoskeleton features a microstructure with alternating material compositions that selectively reflect light, producing its brilliant colors. This structural coloration is more efficient than mechanical reinforcement, allowing the exoskeleton to achieve damage resistance and strength.
Researchers propose a triple-cycle heat treatment system to improve the microstructure and performance of 3D printed titanium-molybdenum alloy human implants, achieving better biocompatibility and mechanical properties matching human bones. This method enables more widespread use of 3D printed implants in the biomedical field.
Researchers have developed an improved organic-based, solid-state lithium EV battery by altering the electrode microstructure using ethanol. The new design increases energy density to 300 Wh/kg, a significant improvement over previous batteries with a utilization rate of nearly 98%. This breakthrough aims to reduce reliance on scarce t...
Rice University engineers have developed a new technique using neural networks to predict the evolution of microstructures in materials, which can be used to design new materials with desired properties. The method has been shown to speed up computations significantly, making it easier to create novel materials.
The team developed a spontaneous patterning method that mimics biological processes, producing resins with regular ridges and controlled height and spacing. By adjusting the initial temperature of the solution, they created materials with patterns of color and stiffness, paving the way for creating new 'smart' materials.
Researchers from Fraunhofer ITWM and Technische Universität Kaiserslautern create a new photosensitive material that enables the fabrication of highly conductive microcomponents via direct laser writing. The approach demonstrates high material density and on-chip compatibility, offering vast potential for improving antenna performance.
The article reviews progress in microstructure engineering and domain engineering of lithium niobate photonics, including photonic modulation and nonlinear photonics. High-efficiency wavelength converters using optical waveguides involve nonlinear integrated photonics.
Researchers at WMG, University of Warwick have developed routes to mitigate the effects of thermal gradients on microstructure, enabling wider use of flash sintering. Adopting these modified flash sintering routes will enable lower energy production of solid-state batteries and complex ceramic products.
Researchers discovered a unique microstructure on the bellies of sidewinding snakes, which improves performance when using lateral undulation for movement. The findings shed light on the functionality of these structures and their role in convergent evolution.
Researchers at Columbia University discovered that adding potassium ions to conventional lithium battery electrolytes prevents lithium microstructure proliferation, ultimately limiting the growth of dendrites that can cause short-circuiting and fires. This breakthrough enables stable lithium metal batteries with improved performance.
Researchers have developed a single-atom alloy co-catalyst that significantly enhances photocatalytic hydrogen production activity. By precisely controlling the Pt content in the Pd@Pt/MOF composite, they achieved an exceptionally high photocatalytic activity, surpassing its counterparts.
Researchers have demonstrated improvements in the fatigue life of high strength aluminium alloys by 25 times, a significant outcome for the global transport industry. Aluminium alloy microstructures that can heal weak links called 'precipitate free zones' (PFZs) were created to enhance fatigue performance.
Scientists from KIT and Heidelberg University have developed a photoresist for two-photon microprinting, enabling the creation of three-dimensional polymer microstructures with cavities in the nano range. The novel material allows for controlled porosity and affects light scattering properties.
Cuttlebone's unique chambered 'wall-septa' design optimizes weight, stiffness, and damage tolerance, allowing for controlled failure and energy absorption. The structure's wavy walls induce fractures at the middle of walls, limiting external impact.
Researchers at the Swiss Federal Laboratories for Materials Science and Technology have successfully produced stable, well-shaped microstructures from silica aerogel using a 3D printer. The printed structures exhibit excellent thermal insulation properties, making them ideal for thermally insulating small electronic components and shie...
Studies using realistic shaving experiments and in situ electron microscopy found that differences in cutting angle, microstructural variation, and location of variations contribute to blade failure. Implementing homogeneous microstructures at the cutting edge could be achieved through nanostructured alloys.
The discovery of KV3Sb5, a material hosting Dirac physics and metallic frustrated magnetism, has led to the observation of one of the largest anomalous Hall effects (AHEs) ever seen. This unique combination enables scientists to study the interaction between these exotic properties.
A team of scientists designed a discontinuous fibrous Bouligand architecture to create exceptional fracture toughness and crack orientation insensitivity. The study reveals the origin of biomimetic microstructures for high-performance advanced composite materials.