Articles tagged with Vortices
Scientists at Aalto University discovered half-quantum vortices in superfluid helium, a topological defect that overcomes limitations of circulating currents. This breakthrough may enable access to isolated Majorana modes and exotic solitary particles, crucial for quantum information processing.
Researchers use laser tweezers to control and arrange Abrikosov vortices in a superconductor, creating an AV-pattern. This technique has potential applications in quantum computation and optically controlled rapid single flux quantum logic elements.
Researchers found that wind patterns in the lowest 500 meters of supercell thunderstorms can help predict whether a storm will generate a tornado. This discovery may lead to better predictions and fewer false alarms during tornado season.
Researchers have discovered 'spatiotemporal optical vortices,' or STOVs, which are 3-D ring structures generated by high-intensity lasers. These structures have the potential to manipulate particles moving at the speed of light and may be useful for designing powerful microscopes and more efficient telecommunication lines.
Researchers at Cornell University have discovered a method to produce vortex ring-derived particles, which can be used for cell delivery and cell-free protein production. This technique, developed by Duo An and his team, has the potential to greatly improve treatments for Type 1 diabetes patients.
Computer models reveal a vast array of knots in chaotic waves, including those tabulated by mathematicians, with implications for understanding optical and acoustic landscapes
A new light-based communication tool can carry data in a swift, circular motion, potentially solving an approaching data bottleneck. The optics advancement could become a central component of next generation computers designed to handle society's growing demand for information sharing.
A team of engineers from Penn State's Applied Research Laboratory have developed an innovative approach to stabilize supercavitation bubbles, reducing the pulsation and noise that can occur during underwater vehicle movement. By applying a sinusoidal air flow variation, they were able to suppress pulsation states in many cases, allowin...
Researchers at CWRU create a way to control electron spins at room temperature using a magnetic vortex. The technology offers a possible alternative strategy for building faster and more powerful quantum computers. By coupling the vortices with diamond nanoparticles, they can manipulate individual electron spins in nanoseconds.
Researchers at Kiel University and Forschungszentrum Jülich have predicted that skyrmions can be produced for applications at room temperature with specifically adjusted magnetic layer structures. This enables the potential for high-density, energy-saving data storage and processing.
Researchers developed an integrated inertial microfluidic vortex sorter for simultaneous double sorting of rare target cells and removal of background cells. The device achieved highly purified target cell products, even in complex samples containing orders of magnitude larger number of background cells.
Researchers discovered a twisted, helical shape can reduce drag by 18-23% compared to round cylinders. This design could improve stability for various structures, including antennae and skyscrapers.
A new vortex identification method has been proposed to accurately visualize vortices in complex 3D flows. The method uses a ratio of vorticity square over the sum of vorticity square and deformation square to define and identify vortex structures, offering a universal and accurate approach.
A team of scientists at OIST Graduate University found an unexpected spiral vortex phenomenon when liquid flows through the intersection of two channels. The researchers discovered that spirals appear as flow rates increase and disappear with decreased rates, exhibiting hysteresis in devices with large aspect ratios.
Steven Cavallo, OU meteorology professor, receives $170,000 Young Investigator award for his commitment to studying vortex dynamics. The prize supports his research on polar meteorology and contributes to the development of new scientific stories in atmospheric science.
A team of researchers from Germany and the UK used high-resolution electron microscopy to study magnetic vortices in magnetite minerals, revealing that they are surprisingly resilient to temperature changes. The findings have significant implications for understanding the Earth's magnetic field history and plate tectonics.
Researchers at MIPT and Prokhorov General Physics Institute divide magnetic vortices into two types, one with isotropic resistance and another with anisotropic behavior. This discovery could lead to the development of faster and more compact processors and non-volatile memory.
High-temperature superconductors exhibit two coexisting states, contradicting the competition-based models previously assumed. The study reveals electronic densities are a combination of separate effects, proposing a new model for understanding these materials.
A new type of laser enables the creation of twisted light with controlled spin, producing vector vortex beams and polarised light. This innovation has significant applications in optics, machining metals, and communication.
Researchers have observed polar vortices in ferroelectric materials, which could lead to new states of matter and applications in data storage and processing. The discovery was made using scanning transmission electron microscopy and X-ray diffraction studies.
A recent study has successfully detected dust devils using a seismometer in California, which will help NASA's InSight mission on Mars measure dust devils' impact on the atmosphere. The findings also provide insights into Martian climate and the composition of rocks and dust.
Researchers at MIT have fabricated and tested a large-scale model of a harbor seal's whisker, identifying a mechanism that explains how seals sense their environment and track prey. The team found that the whisker's 'slaloming' motion helps seals detect turbulence left by moving objects.
Researchers found that the sample's resistance changes nonlinearly with an increasing magnetic field, suggesting a liquid-to-gas-like transition. This discovery could lead to the creation of faster and more compact electronics using Mott transition.
A team of researchers has experimentally connected classical and quantum mechanics by observing a dynamic Mott transition in a superconductor. The discovery sheds light on non-equilibrium physics and could lead to more efficient electronics.
A novel approach using a motile bacteria and microbial lug-gage enhances cellulose degradation in solid-state conditions. This method overcomes limitations of current biocatalysts, offering a promising solution for efficient and cost-effective cellulose hydrolysis.
A study published in Scientific Reports reveals that birds like magpies utilize a tiny vortex formed at the alula feathers tip to improve flight maneuverability. The researchers observed this phenomenon through wind tunnel experiments, demonstrating how the vortex helps air flow attach to the wing surface.
Physicists from Lomonosov Moscow State University develop theory for creating artificial turbulence in microchannels using superhydrophobic surfaces. The approach enables efficient mixing and separation of liquids, promising applications in chemistry and biomedical research.
Researchers at University of Bristol invent a microscopic acoustic vortice that can grip and spin small particles, opening new possibilities for biological cell sorting and water purification. The device uses sound waves to rotate particles, with larger objects being drawn into the core and spinning at high speeds.
A new mathematical tool calculates turbulent air flow produced by plane wing tips, aiding in improved takeoff procedures and reduced delays. The study aims to establish strict separation standards for different aircraft sizes, enhancing aviation safety.
Physicists at TUM and University of Cologne develop theoretical description of behavior for magnetic vortices in conductors, semiconductors, and insulators. The theory predicts properties for optimal device development, promising compact frequency devices with high efficiency.
Scientists have found a method to electrically read out the orientation of magnetic vortices in nanodisks using characteristic microwaves. This knowledge could be used in novel memory technology and wireless data transmission.
Scientists at Johns Hopkins University have developed a method to control individual vortices in nanowires, trapping them and maintaining resistance-free current in superconductors. This breakthrough has the potential to enhance the performance of devices such as MRI scanners, particle accelerators, and future quantum computers.
Researchers at DESY used high-speed photography to observe the formation of magnetic microvortices in ultrafast memory cells. The study provides a better understanding of magnetic storage materials and their dynamics, with potential implications for faster and better data storage media.
A new simulation demonstrates that hummingbirds generate lift and thrust using unsteady airflow mechanisms, creating invisible vortices of air. This unique approach sets them apart from larger birds and is more closely aligned with insect flight.
Physicists at Australian National University have created a spiral laser beam that generates a stable vortex of polaritons, which are hybrid particles exhibiting both matter-like and light-like behavior. This achievement could enable the development of novel technology linking conventional electronics with photonics.
A study presented at the American College of Allergy, Asthma and Immunology Annual Scientific Meeting found that spring pollen counts in Ontario, Canada were down considerably, with levels of certain tree pollens being four to five times lower than usual. This challenges predictions of a harsh 'pollen vortex' affecting allergy sufferers.
Researchers at the University of Sheffield have made a breakthrough in creating magnetic materials that can perform calculations, paving the way for more power-efficient computers. By harnessing the properties of magnetic vortex domain walls, they hope to develop smaller and faster logic gates.
Researchers successfully characterized quantum vortices in helium nanodroplets for the first time, revealing unique features and opening new avenues to study quantum rotation. The discovery confirms that helium nanodroplets are superfluid throughout and exhibit a single quantum object behavior.
Researchers use X-rays to explore helium nanodroplets, finding unprecedented quantities of quantum vortices that lead to extreme deformation and anomalous behavior. The study sheds light on the properties of superfluids at microscopic scales.
Researchers detected quantum vortices in nanodroplets of liquid helium, forming a densely packed lattice. The droplets rotated at up to 14 million times per second, defying classical physics.
Researchers propose building three east-west great walls to eliminate the major tornado threat in Tornado Alley. The walls, inspired by Jiang-Huai Hills in China, can be built locally at high-risk areas and gradually extended to cover the entire region.
Researchers have explained the emergence of a bacterial vortex by understanding its relation to physical mechanisms like collisions, boundary interactions, and fluid flow. Computer modeling and experimentation confirm that bacteria align themselves in the same direction due to their flagellar motion, creating a two-way fluid flow.
The study of compressible mixing layers is crucial for propulsion design in high-speed vehicles. Researchers introduced a new framework called SED to analyze experimental data, providing evidence for nonlinear growth in CML. The findings suggest that lower growth rates are associated with large-scale vortices and inflow conditions.
Researchers studied the competition of multiple Gortler modes in hypersonic boundary layers, highlighting the importance of the trapped-layer mode (mode T) in flow transition. The study found crossovers between mode T and W with specific parameters.
Researchers at Brookhaven National Laboratory have successfully synchronized magnetic spins in nanoscale devices to build tiny yet more powerful signal-generating or receiving antennas. The technology harnesses the power of an electron's spin, opening doors for novel types of antennas and electronics.
Physicists have observed Kelvin waves on quantum 'tornadoes' for the first time, confirming a key prediction. The discovery was made using extremely cold liquid helium and provides new insights into turbulence in quantum fluids.
The new framework was used to understand the dynamics of quantized vortices and their interaction with electrons. The researchers discovered a novel mechanism of vortex multiplication, which explains why unidentified electron objects were found only at lower temperatures.
UW physicists debunk the 'heavy soliton' mystery by revealing it's actually a quantum equivalent of smoke rings, shedding light on nuclear dynamics and neutron star behavior. The research uses state-of-the-art computing techniques to demonstrate that virtually all aspects of the phenomenon can be explained by vortex rings.
Researchers measured dolphin force using bubble DPIV, proving Gray's paradox was incorrect. Dolphins produce impressive power, even accelerating rapidly at 5400 W.
A team of engineers has accurately modeled the whistling mechanism in a classic stovetop kettle, identifying two-mechanism process of whistle production and potential solutions to noisy plumbing issues. The study's findings reveal that swirling vortices create the siren sound, which could help eliminate annoying noises.
Scientists Pedram Hassanzadeh and Philip Marcus present a new model explaining the Great Red Spot's persistence, suggesting vertical flow plays a key role. The model also predicts radial flow pumping energy into the vortex, enabling it to last longer.
Researchers study stingray movement to develop more efficient unmanned underwater vehicles, allowing for deeper ocean exploration and rescue efforts. The unique swimming style of stingrays may lead to breakthroughs in submarine design, inspired by nature's optimal swimming gait.
French researchers create sophisticated model to study geophysical vortices, which can impact weather forecasting and environmental monitoring. The study reveals that strong background rotation suppresses radiative instability in vortices.
Researchers develop new technique to find coherent ocean eddies, equivalent to black holes, which can moderate the negative impact of melting sea ice. These 'eddy-black holes' can also transport warm and salty water, influencing climate change and ocean currents.
Tropical Storm Man-yi has two distinct vortices rotating around its center, one in the northwestern and southeastern sides. These vortices are associated with strong thunderstorms and deepening convection, indicating strengthening winds.
Researchers at UC Berkeley propose that 'zombie vortices' play a crucial role in the birth of new stars. The team's computer models show how variations in gas density lead to instability, resulting in whirlpool-like vortices that help the star form.
Disney Research has developed AIREAL, a technology that uses controlled puffs of compressed air to create tactile effects in virtual environments. The system allows users to feel sensations such as textured surfaces and force feedback for gestures, opening up new possibilities for gaming and interactive experiences.
Researchers used detached-eddy simulations to study new vortical flows over a 76/40 double delta wing, finding a new type of cross-flow vortex that differs from other vortices. The vortex is caused by cross-flow instability and can cause local pressure distribution deviations.
Scientists at TUM have found that magnetic monopoles can erase data in magnetic vortices, called skyrmions. This discovery has the potential to create extremely compact and long-lived storage media with significantly reduced power consumption.
Researchers at Berkeley Lab and international team develop method to control spin orientation in magnetic nanodisks, enabling four-bit storage and potential for faster, more energy-efficient devices. Smaller disk sizes show promise for faster switching times.