Articles tagged with Vortices
A recent study using motion-capture and particle image velocimetry reveals that the flutter kick generates three-dimensional vortex structures contributing to forward propulsion. The alternating leg movements also produce asymmetric vortices, generating rolling and yaw moments that stabilize body posture during swimming.
Researchers found that different angles of flight affect the vortices behind cones in flight, causing uneven swirling flows and rotational forces. The study helps engineers create efficient and stable designs for high-performance aircraft.
A team of researchers from The University of Osaka used supercomputer simulations to study how vortices generated by dolphin kicks power fast swimming. They found that large, powerful vortices created by the movement of the dolphin's tail are responsible for most of the propulsion, while smaller ones contribute little to forward motion.
A new machine-learning method detects sudden changes in fluid behavior, improving simulation capabilities for everyday applications like weather prediction and nuclear reactor safety. This enables faster design testing, real-time adjustments, and reduced computational burden.
Researchers at OIST develop world-class 'hurricane-in-a-lab' setup to study turbulent Taylor-Couette flows. By re-examining Kolmogorov's framework, they find that the power law predicts universal behavior across all small-scale flows, resolving a long-standing inconsistency.
A team led by Junichi Shiogai successfully observes the superconducting diode effect in an Fe(Se,Te)/FeTe heterostructure, exhibiting rectification under various temperature and magnetic fields. This breakthrough paves the way for ultra-low energy electronics built from superconductors.
Harvard physicists develop an optical vortex beam that twists and changes shape, resembling spiral shapes found in nature. The 'optical rotatum' has potential applications in controlling small particles and micro-manipulation, and its creation is made possible with a single liquid crystal display.
Researchers at Pohang University of Science & Technology and Jeonbuk National University successfully trapped mechanical waves within a single resonator, overcoming a century-old physics barrier. The discovery opens new possibilities for energy harvesting, ultra-sensitive sensors, and advanced communications.
Recent study on 2M-WS2 reveals coexistence of striped surface charge order with superconductivity, modifying spatial distribution of Majorana bound states. Experimental results demonstrate that surface charge order does not destroy bulk topology but can modify MBS positions.
Researchers developed a compact, solid-state laser system that generates 193-nm coherent light, marking the first 193-nm vortex beam produced from a solid-state laser. This innovation enhances semiconductor lithography efficiency and opens new avenues for advanced manufacturing techniques.
Researchers discovered how bacterial swarms transition from organized movement to chaotic flow as confinement radius increases. The study reveals intermediate states between order and turbulence through large-scale experiments, computer modeling, and mathematical analysis. These findings provide insights into the universal properties o...
Scientists have proposed and successfully generated hybrid electromagnetic toroidal vortices, combining vectorial and scalar electromagnetic toroidal vortices. These structures integrate key features such as topological skyrmions, transverse orbital angular momentum, spatiotemporal fields, and electromagnetic vortex streets.
A recent study from the University of Missouri and Yale University found that restricting flavored e-cigarettes leads to a decrease in vaping among young adults. However, this restriction also increases traditional cigarette smoking among young adults compared to states without such restrictions.
The study reveals the existence of valley vortex states within water wave crystals, introducing a new degree of freedom for water wave manipulation. These states have significant implications for ocean energy extraction, marine engineering, and coastal infrastructures.
Researchers design flexible, batlike wings that boost lift and improve flight performance. The study found that smooth curvature of the membrane wing generates more lift than a leading-edge vortex.
Researchers at Duke University developed an acoustofluidic integrated molecular diagnostics chip, AIMDx, that uses tiny vortexes to detect dangerous viruses. The vortexes trap cells, bacteria, and larger bioparticles, purifying samples for biomedical tests.
Researchers at City University of Hong Kong have observed a new vortex electric field with the potential to enhance electronic, magnetic and optical devices. The discovery enables the creation of quasicrystals with versatile applications in memory stability, computing speed, spintronics and sensing devices.
Researchers developed a breakthrough optical technology, SC-PVVBs, that can carry vast amounts of information, making them ideal for dense data communication systems. The technology overcomes conventional optical beam limitations by locally patching spatial frequency to create multiple data channels.
Researchers have discovered unusual, Earth-size magnetically driven vortices generating dense, hydrocarbon haze at Jupiter's poles. The dark ovals hint at strong interactions between the planet's magnetic field and atmosphere.
The MIT team fabricated a simple water filter modeled after the mobula ray's plankton-filtering features and studied its performance. They found that the ray's filtering features are broadly similar to industrial cross-flow filters, which could inform design of water treatment systems.
Researchers at Aalto University have developed a method to create tiny vortices in light, which can carry information and potentially increase data transmission capacity by 8-16 times. The discovery uses quasicrystal design and manipulated metallic nanoparticles to achieve this feat.
A team of physicists has observed mini-tornadoes in a supersolid quantum gas, confirming the existence of quantized vortices as a hallmark of superfluidity. The discovery is significant for understanding the behavior of supersolids and their potential applications in fields like condensed matter physics.
Researchers at Tampere University have observed hidden deformations in complex light fields for the first time. These deformations carry significant information about the object, such as its material properties. The study has implications for measuring material properties with structured waves and will inspire new optical technologies.
The researchers successfully generated dual-polarized terahertz vortex combs by designing a polarization-multiplexed meta-atoms structure and controlling the mode number, position, and interval of the vortex combs. This achievement promotes the development of ultra-high-capacity terahertz multi-mode communication technology.
A new structure of light has been discovered that can accurately measure chirality in molecules, a property of asymmetry important in physics, chemistry, biology, and medicine. This 'chiral vortex' provides an accurate and robust form of measurement, allowing for the detection of chiral biomarkers.
Researchers at the University of Buffalo have successfully fabricated the world's highest-performing high-temperature superconducting (HTS) wire segment, achieving critical current density and pinning force values previously unseen. The breakthrough could significantly improve the price-performance metric for commercial coated conducto...
Researchers from Tokyo Institute of Technology found that shark skin's denticles reduce drag at a wide range of speeds, allowing sharks to cruise efficiently and hunt effectively. The study suggests that extinct giant megalodons may have similar swimming speeds to white sharks.
Researchers at Osaka Metropolitan University have developed a new laser-induced forward transfer technique using optical vortex to print magnetic ferrite nanoparticles with high precision. The resulting crystals exhibit helix-like twisted structures that can be controlled by changing the optical vortex's helicity.
Researchers have proposed a new model explaining neutron star glitches, suggesting that the power-law behavior of glitch energies is due to the formation of twisted clusters of superfluid vortices. The study found that the exponent for the power-law behavior closely matched the observed data.
Researchers at KAIST successfully clarified the three-dimensional, vortex-shaped polarization distribution inside ferroelectric nanoparticles using atomic electron tomography. This discovery has implications for ultra-high-density memory devices with capacities over 10,000 times greater than existing ones.
Researchers have introduced iso-propagation vortices, offering a solution to increasing information processing capacity while overcoming traditional vortex beam limitations. IPVs exhibit OAM-independent propagation, allowing for consistent beam size during free-space propagation.
Researchers at ETH Zurich directly detected electron vortices in graphene using a high-resolution magnetic field sensor. The vortices formed in small circular disks with different diameters and were observed to reverse the flow direction.
Electron vortices are tailored to produce specific intensity patterns, enabling new applications in electron microscopy and nanostructures. The study demonstrates experimentally the control of intensity modes by manipulating the local structure of the electron beam.
Researchers at HZB have developed a new approach to create and stabilize complex spin textures like radial vortices in various compounds. By using superconducting structures to imprint domains and surface defects to stabilize them, they achieve stable magnetic microstructures that can be used for spintronic applications.
Researchers have created a giant quantum vortex in superfluid helium, mimicking the gravitational conditions near rotating black holes. The study provides new avenues for simulations of finite-temperature quantum field theories within curved spacetimes.
Researchers at Light Publishing Center created a thin disk oscillator to generate 100-W high-power optical vortex beam. The technique uses transverse mode competition and control to achieve high power output, enabling efficient material processing and exploring new parameter space associated with structured light.
A new technique using optical orbital angular momentum lattice (OAML) multiplexed holography boosts information storage capacity and offers novel approaches for implementing high-capacity holographic systems. The research unlocks supplementary encrypted dimensions, enhancing storage capacity and overcoming limitations of traditional me...
Researchers at Princeton University discovered a sudden change in quantum behavior while experimenting with a three-atom-thin insulator. The findings suggest the existence of unique quantum phase transitions that disobey established theories, promising to enhance our understanding of quantum physics and superconductivity.
Researchers developed three diffractive deep neural networks using orbital angular momentum to recognize objects in images, achieving accuracy comparable to wavelength and polarization-based models. The technology has potential for real-time processing applications like image recognition and data-intensive tasks.
Researchers have developed an integrated THz vortex beam emitter to detect rotating targets with remarkable precision. The system uses spiraling electromagnetic waves with orbital angular momentum to accurately measure the speed of a rotating object, with a maximum margin of error of just around 2 percent.
A mathematical breakthrough provides new insights into typhoon dynamics, enabling more accurate predictions and advancements in weather forecasting. The study confirms the stability of specific vortex structures, which can be encountered in real-world fluid flows.
The 76th annual meeting of the American Physical Society's Division of Fluid Dynamics will bring together over 3,500 scientists from around the world to present new research on fluid dynamics. The conference will feature a scientific program with over 3,200 presentations and a gallery of fluid motion visual arts competition.
Researchers from FAMU-FSU College of Engineering validated the self-consistent two-way model describing vortex ring motion in superfluid helium. The study provides crucial evidence supporting the recent theoretical model of quantized vortices, resolving long-standing questions and enhancing understanding of vortex dynamics.
A research group from Nagoya University simulated clear air turbulence using Japan's fastest supercomputer. They found that wind speed disturbances occur due to the collapse of Kelvin-Helmholtz instability waves, creating turbulence in the absence of visible clouds or other atmospheric disturbances.
Scientists at Max Planck Institute for Dynamics and Self-Organization have challenged long-held assumptions about turbulent flows, finding deviations from established scaling laws in highly idealized environments. This discovery has implications for understanding turbulence in engineered flows, weather forecasts, and climate models.
Researchers created an isolated turbulent blob by firing vortex rings into a tank of water, allowing precise tracking of its parameters. This breakthrough enables scientists to study real-world turbulence more effectively, exploring questions about dissipation, expansion, and energy spread across scales.
A new kind of superconducting vortex has been found, dividing the magnetic flux into a wider range of values than previously thought. This discovery challenges the prevailing understanding of superconductivity and potentially opens up new possibilities for superconducting electronics.
Spatiotemporal vortices of light feature azimuthal phase dependence and are associated with optical OAM. Researchers have made significant progress in understanding and controlling these phenomena for various applications.
Researchers at the University of Washington have developed a multifunctional interface between photonic integrated circuits and free space, allowing for simultaneous manipulation of multiple light beams. The device operates with high accuracy and reliability, enabling applications in quantum computing, sensing, imaging, energy, and more.
Researchers at the University of Nottingham have successfully created and controlled magnetic vortices in an antiferromagnet using a magnetic imaging technique. This discovery has significant implications for next-generation memory devices, which could lead to faster and more energy-efficient computing.
A team from Nanjing University and Sun Yat-Sen University developed a two-facing Janus OPO scheme for generating high-efficiency, high-purity broadband LG modes with tunable topological charge. The output LG mode has a tunable wavelength between 1.5 μm and 1.6 μm, with a conversion efficiency above 15 percent.
Researchers at Argonne National Laboratory have discovered ultrasmall swirling magnetic vortices, known as merons and skyrmions, in an iron-containing material. These tiny magnetic structures show promise for future computer memory storage and high-efficiency microelectronics due to their stability and adaptability to binary code.
Researchers at Lancaster University have discovered how energy disappears in quantum turbulence, a crucial step towards mastering this phenomenon and its applications. The study reveals the role of Kelvin waves in transferring energy from macroscopic to microscopic length scales.
Researchers at Aalto University have made significant progress in understanding quantum wave turbulence by studying its behavior in ultra-low temperature refrigerators. They found that Kelvin waves transfer energy from macroscopic to microscopic scales, confirming a theoretical prediction about dissipation of energy at small scales.
Researchers developed a new tool using vortex ultrasound to break down blood clots in the brain, which eliminated clots more quickly than existing techniques. The approach works by inducing shear stress on the blood clot, reducing risk of hemorrhage in the brain.
Researchers at ETH Zurich have created a device that uses ultrasound to automate laboratory analysis tasks. The device combines microfluidics and robotics, allowing for the mixing, pumping, and trapping of tiny amounts of liquid. This innovation enables the automation of previously custom-designed systems.
Researchers developed a computational model of flying snakes' undulation to understand lift production. The snake's cross-sectional shape creates pressure differential across its body, lifting it and allowing it to glide through the air.
Researchers have created a structure of linked vortices that cannot break apart due to their fundamental properties. This discovery has implications for quantum computing and particle physics, and could lead to more accurate logical operations in topological quantum computing.
Researchers have developed an algorithm to detect pressure activity indicative of dust devils in the Mojave Desert, which can inform their formation and life cycles on Mars. The study aims to improve Martian weather models and enhance robotic missions.
Researchers at Johannes Gutenberg University Mainz developed a prototype that combines Brownian and reservoir computing to perform Boolean logic operations. This innovation uses metallic thin films exhibiting magnetic skyrmions to achieve energy savings through automatic system reset.