Articles tagged with Vortices
Scientists at Argonne National Laboratory have discovered tiny magnetic vortices called skyrmions that could store data in computers, promising 100-1000 times better energy efficiency than current memory. The team used AI and a high-power electron microscope to visualize and study the behavior of these micro-scale magnetic structures.
Scientists at the Max Planck Institute have developed a unidirectional device that significantly increases the quality of optical vortex signals. By transmitting selective optical vortex modes exclusively unidirectionally, they largely reduce detrimental backscattering to a minimum.
Scientists at the University of Innsbruck have developed a new method to observe and study ultra-cold mini twisters, quantized vortices that form in dipolar quantum gases. These vortices are a strong indication of superfluidity, a frictionless flow characteristic of certain quantum gases.
A team of scientists developed a chip that simulates the human lung's breathing pattern, allowing them to visualize and analyze the flow of air and particulates through the alveoli. They found distinct flow patterns for different generations of the bronchial network, shedding light on respiratory diseases such as emphysema and COPD.
Researchers have created and observed novel vortices in an ultracold gas, exhibiting unexpected properties due to hidden discrete symmetries. The discovery may lead to breakthroughs in quantum computing and information processing.
A new model developed by FSU researchers predicts the spread of vortices in superfluids, shedding light on a key aspect of turbulence in quantum fluids. The study also validates previous experimental results and provides evidence for the physical mechanism underlying vortex superdiffusion.
Citizen scientists can help categorize tens of thousands of images from NASA's Juno spacecraft to identify atmospheric vortices and learn about the physics behind their formation. The project aims to study Jupiter's atmosphere and create a computer algorithm for future identification, also benefiting research on Earth's weather patterns.
Researchers observe formation of ordered and tunable MZM lattice in naturally strained LiFeAs, characterized by strain-induced CDW stripes. The lattice density and geometry can be tuned using external magnetic fields, providing a promising platform for manipulating MZMs.
Researchers at Lancaster University have created a camera-like device that captures images of mini whirlpools in quantum liquids for the first time. The camera uses particle-like disturbances to take pictures of collections of vortices, which are unpredictable and form in specific patterns above a vibrating wire.
Scientists at IIT realized coupled light vortices forming an ordered structure, a light crystal. They developed metasurfaces to control laser beams and created 100 light vortices with tunable topology, enabling new properties for optical communications and simulations of complex systems.
Researchers have developed a direct method for generating complex structured light through intracavity nonlinear frequency conversion. This technique uses transverse mode locking to produce vortex beams, which are then converted into second-harmonic generation beams with distinct structural characteristics. The study demonstrates the p...
Researchers at Argonne National Laboratory discovered how microparticles can change direction when an electric stimulus is interrupted and reapplied with the same orientation. This emergent behavior has potential applications in microfluidic pumps for biomedical, chemical, and electronics applications.
Researchers discovered that fish generate movable vortex pairs of high- and low-pressure regions to propel themselves forward. This process involves precise control of body fluctuations, which enables the fish to swim with high motion control and flexibility.
Researchers studied vortices in a superfluid, merging into large clusters like cyclones. The results validate Onsager's model, explaining vortex equilibrium and shedding light on turbulent fluid flows.
Researchers at Texas Tech University use supercomputers to analyze the dynamics of vortices and turbulence, finding that reconnection can lead to the formation of new structures. The study aims to improve fuel efficiency for cars and develop energy-saving aircraft designs.
Physicists at the University of Queensland have developed a comprehensive understanding of vortex pinning and unpinning in two-dimensional superfluids. The study reveals four regimes governing these interactions, including a 'pair creation' regime where vortices are pinned to defects.
Researchers found that a light breeze of about 5 mph extends effective social distancing by around 20% due to increased viral load persistence. Wearing masks outdoors reduces the chances of infection, with stronger winds increasing virus spread.
Engineering researchers at Florida State University have discovered a new mechanism for the spontaneous formation of Onsager vortices in two-dimensional superfluids. The true explanation involves the exit of vortices from the boundary of a disk-shaped BEC, contrary to the well-accepted evaporative heating mechanism.
A new study shows that polar vortex disruptions most favorable for extreme US winter weather are increasing, with Arctic change likely contributing to the trend. The analysis demonstrates that a 'stretched' polar vortex state is more common and leads to severe winter weather.
A 2018 Martian dust storm destroyed a southern hemisphere cold air vortex and brought an early spring, whereas the northern hemisphere's vortex remained stable. The storm had profound effects on the atmosphere, including altering wind patterns and suppressing waves in the northern hemisphere.
New study reveals climate change intensifies Arctic ozone depletion, putting Europe and North America at risk of increased UV radiation exposure. The expected recovery of the ozone layer may fail unless global greenhouse gases are rapidly reduced.
A new study shows that climate change is increasing ozone depletion over the Arctic, contrary to previous assumptions. The researchers found record-low polar vortex temperatures and highest ozone losses on record in 2020, driven by greenhouse gas emissions.
Researchers found that fluid flow vortices have high information processing capabilities before transitioning to a Karman vortex street. Virtual physical reservoir computing using numerical simulation revealed the relationship between vortices and info processing capacity.
Skoltech researchers have successfully created stable giant vortices in polariton condensates, addressing a known challenge in fluid dynamics. This breakthrough opens possibilities for uniquely structured coherent light sources and exploring many-body physics under extreme conditions.
Researchers have discovered the VFD's capabilities in controlling chemical reactivity, materials processing, and probing self-organised systems. The device has shown promise in synthesizing various compounds and could lead to more efficient and environmentally friendly production methods.
A recent study published in Advances in Atmospheric Sciences found that the polar vortex plays a key role in Antarctic stratospheric ozone depletion. The research used ZSL-DOAS techniques to measure ozone depletion near the edge of the polar vortex, revealing a positive correlation between PV and total ozone columns.
Lancaster physicists create novel method using nanoscience to detect individual quantum vortices in superfluid helium, revealing simpler dynamics than classical turbulence. This breakthrough could provide clues on solving the Navier-Stokes Equations, governing fluid flow.
A team of scientists has developed a single spin-decoupled metasurface that can distinguish between spatial angular moment (SAM) and orbital angular momentum (OAM) modes. The device exploits the geometric phase and dynamic phase to transform vortex beams into focusing patterns, enabling simultaneous detection of SAM and OAM.
A team of researchers has discovered the dynamics of polar vortices in ferroelectric materials, which can be manipulated with light pulses and controlled at nanosecond timescales. This new research may lead to the development of faster data processing and storage devices.
Researchers at Florida State University have visualized the motion of vortices in superfluid helium-4, a quantum fluid that exists at extremely low temperatures. The study revealed that as vortex tubes appeared, they moved randomly and rapidly away from their starting point, exhibiting superdiffusion.
A study by Toyohashi University of Technology found that Japanese speakers often confuse the pronunciations of /hi/ and /si/ due to palatalized tongue articulation. Real-time MRI and supercomputer simulations revealed that acoustic contrast between the sounds can be produced by differences in tongue shape in the transverse direction.
Researchers from Bigelow Laboratory discovered that copepods gather around small vortexes in the ocean, affecting the food web. These tiny vortexes have significant implications for understanding copepod behavior and their impact on marine ecosystems.
A study investigates the role of vertical coupling in TC genesis, revealing a key mechanism behind the formation of TCs. The research suggests that VHTs play a crucial role in connecting the middle- and lower-troposphere trough axes, leading to VC.
Scientists have successfully created a vector beam with an unprecedented 5 degrees of freedom, exceeding the previously reported 2 DoFs. This breakthrough exploits ray-wave duality in a frequency-degenerate laser to generate a non-separable output that combines periodic number, transverse index, oscillating phase, and astigmatic degree.
Scientists used laser imaging and fluorescent particles to study water flow in tire grooves, finding vortices and bubbles that can contribute to hydroplaning. The study's findings may help improve tread designs to counteract this phenomenon.
Scientists at USTC developed a new technique to detect chiral structures using vortex light, which interacts with the structure's microstructure to produce significant scattering. This technique allows for monochromatic light detection and provides a novel method for studying chiral light-matter interactions.
A new turbulence model can simulate entire vortex collision events up to 100 times faster than current state-of-the-art techniques. This allows engineers to design better aircraft and weapon systems without waiting months for supercomputer calculations.
Engineers design aircraft capable of handling extreme turbulence by simulating complete vortex collisions at reduced computational time. The CvP-LES model captures super complex physics without extensive data processing, enabling aircraft designs for fighter jets and helicopters.
Researchers at the University of Pittsburgh took snapshots of light using ultrafast microscopy, stopping it to observe its behavior. They discovered that light vortices can cause transitions in solid state materials, generating topologically distinct materials.
Astronomers observing a dark vortex on Neptune noticed it change direction by August 2020, doubling back to the north. A smaller dark spot, possibly a fragment of the giant vortex, was also spotted near its larger cousin in January this year.
Researchers at Fukuoka University found that face shields alone are not effective against COVID-19 sneezes. Vortex rings generated by sneezes can capture microscopic particles and transport them inside the shield through its top and bottom edges.
Researchers at the Paul Scherrer Institute report the discovery of three-dimensional magnetic 'vortex rings' within a tiny pillar made of gadolinium cobalt. These structures, consisting of doughnut-shaped vortices, provide fundamental insight into intricate nanoscale structures inside bulk magnets.
Fish schools are highly dynamic, social systems. Researchers used biomimetic robots to show that fish can profit from the vortices generated by near neighbours without keeping fixed distances, and found that a specific time lag based on spatial position is key to energy efficiency.
The Australian Quantum Vortex team has been named a finalist in the Australian Museum Eureka Prizes for their groundbreaking study on turbulence. The team's use of laser technologies to observe quantum origins of turbulence has provided new insights into the behavior of vortices, which influence global weather and flight patterns.
Researchers at PSI have successfully created and visualised antiferromagnetic skyrmions with a unique property: critical elements arranged in opposing directions. This discovery is a major step towards developing new technologies, such as more efficient computers.
Researchers developed a superior method to produce high-quality dietary Omega-3 health supplements using vortex fluidic device processing. The process enriches Omega-3 fatty acid content without changing sensory values, improving shelf life and purity.
A new study reveals that all initial vortex arrangements in superfluids collapse to form a 'Rankine' super-vortex distribution, similar to a top hat. This universal dynamics phenomenon explains how superfluids dissipate their energy via quantised vortices.
A numerical model recreates Jupiter's polygonal vortex patterns, revealing the importance of shielding and vortex depths. The study suggests that further research is needed to understand why these patterns persist on Jupiter but not on other large gas giants.
Researchers have developed a weakly nonlinear waveguide that allows the stable propagation of azimuthons, which can exhibit Rabi oscillation. This technology enables new possibilities for encoding and encrypting optical information, and has potential applications in photonics and other fields.
Chinese researchers successfully reversed single magnetic vortex circulation using an electric field, demonstrating a promising approach for future spintronic devices with higher storage density and lower power consumption. The study reveals a new magnetoelectric coupling mechanism for controlling nanoscale chiral spin textures.
Researchers found a new superconducting system that enables magnetic flux quanta to move at velocities of 10-15 km/s, breaking the limit of type II superconductors. This discovery opens up possibilities for quantum information processing and single-photon detection.
Researchers at RIKEN Center for Emergent Matter Science successfully manipulated and tracked individual skyrmions, moving them using a small electric current. The breakthrough could lead to the development of more energy-efficient racetrack memory and neuromorphic computing devices.
Researchers used model simulations to study Saturn's polar hexagon, discovering a potential mechanism for its formation. The simulations produced latitudinal flow jets and vortices that resembled those observed on Saturn, suggesting a possible explanation for the stable pattern.
Researchers at the University of Pennsylvania have developed a system that can manipulate and detect orbital angular momentum, or OAM, of light on small semiconductor chips. This breakthrough enables the transmission of multiple distinct OAM modes, potentially shattering the bandwidth bottleneck in optical communications.
Researchers at Tokyo University of Agriculture and Technology found that heart size affects both vortex flow and pressure difference in dogs. The study suggests that correcting for these differences can be used to diagnose diastolic function in pediatric and veterinary medicine.
Scientists have developed a rapid and efficient delivery method that uses the power of a tiny fluid vortex to deform cell membranes, allowing for the delivery of nanomaterials such as DNA, proteins, and drugs. The device, called a spiral hydroporator, can deliver nanomaterials into around one million cells per minute with up to 96% eff...
Scientists at Harvard John A. Paulson School of Engineering and Applied Sciences have made significant progress in understanding turbulence by studying the behavior of vortex rings when they collide. The research, published in Science Advances, reveals a fundamental mechanism for how fluidic systems transform from order to disorder.
Researchers discover magnetic vortex clusters in one-dimensional manganite wire stabilized by artificially engineered strain state. Phase-field modeling supports the role of inhomogeneous strain in vortex formation. This work offers a new strategy for building emergent spin textures and designing magnetoelectronic devices.
Researchers at Skoltech have developed a way to generate intense UV vortices, which can help investigate new materials. The pulses have a duration of a few hundred attoseconds and are capable of transmitting orbital angular momentum.
A study found that tropical conditions, rather than the Arctic stratosphere, influence three out of four main winter weather patterns in North America. This discovery provides forecasters with an additional tool to predict high-impact weather during winter.