Articles tagged with Acoustic Waves
Experts from around the world will participate in a simulated nuclear inspection in Jordan to prepare for Comprehensive Nuclear-Test-Ban Treaty (CTBT) on-site inspections. The exercise aims to refine and test monitoring techniques, ensuring scientists are ready to investigate possible nuclear explosions.
Researchers have devised a new way to separate cells by exposing them to sound waves as they flow through a tiny channel, overcoming existing cell-sorting technologies' limitations. The device successfully recovered about 71 percent of breast cancer cells from white blood cells in tests.
Researchers have developed a device that uses tilted-angle standing surface acoustic waves to separate cells with minimal energy. The method is gentler than traditional methods like centrifugation and can efficiently sort cells with high purity.
Researchers at Berkeley Lab have developed a technique for generating acoustic bottles that can bend sound waves along prescribed convex trajectories. This technology has the potential to revolutionize various applications, including advanced ultrasonic imaging and therapy, acoustic cloaking, and levitation.
Researchers used transgenic zebrafish and multidimensional time-lapse microscopy to visualize gene expression waves and segment formation. They found that the timing of segmentation is influenced by a Doppler effect caused by shortening embryonic tissue, which modulates the wave profile.
Astronomers have developed a method to distinguish between infant and adolescent stars based on their sound waves, with 'young' stars vibrating slower. This technique uses ultrasound technology similar to medical applications, offering new insights into star formation and evolution.
Scientists have discovered the corona extends far beyond previous observations, with implications for NASA's Solar Probe Plus mission. Direct measurements of the heliosphere's inner boundary provide new insights into solar particle behavior and the origin of the solar wind.
Engineers at MIT and LLNL have created a system to fabricate microstructured materials with great stiffness and strength at ultralow density. The new material has been tested using three engineering materials, metal, ceramic, and polymer, and shown comparable properties.
Researchers at Vienna University of Technology have created a system of coupled lasers that exhibit paradoxical behavior. By adding or reducing energy, the lasers can switch each other on or off, making them suitable for building logical circuits using light.
Researchers have demonstrated a technique for producing acoustic phonons at 10 GHz, promising unprecedented resolution for acoustic imaging. The team used nanostructures to generate and detect the phonons, which can be used to 'see' subsurface structures in nanoscale systems.
Scientists at Vienna University of Technology create an 'optical synthesizer' that combines different frequencies to form a characteristic laser waveform, similar to music. This enables the creation of attosecond pulse radiation hundreds of times more intense than previous methods.
A Stanford electrical engineer has invented a way to wirelessly transfer power deep inside the body, paving the way for new 'electroceutical' devices to treat illness or alleviate pain. The technology uses roughly the same power as a cell phone and can safely penetrate deep into the body.
A team of researchers from China's State Key Lab of Mechanics and Control of Mechanical Structures introduced innovative strategies for ultrasonic manipulation by employing various acoustic streaming fields. This enables the diversification of manipulation functions and samples, widening the application range of the technique.
Researchers at MIT discovered that tiny pores in the inner ear membrane filter sound frequencies, allowing humans to differentiate between competing sounds. The optimal pore size determines hearing sensitivity, with smaller or larger pores impairing hearing.
Researchers at Duke University have successfully demonstrated the world's first three-dimensional acoustic cloak, rerouting sound waves to create an illusion of emptiness. The device has potential applications in sonar avoidance and architectural acoustics, altering sound wave trajectory to match a flat surface.
Researchers have created an acoustic field rotator, a device that manipulates sound waves, using metamaterials. The device can rotate sound waves in a manner similar to electromagnetic or liquid wave counterparts, which could improve the operation of medical ultrasound machines and enhance image quality.
A team of researchers from the University of California, Riverside has demonstrated a new type of holographic memory device that uses spin waves to store data. The device has unprecedented data storage capacity and processing capabilities, making it potentially revolutionary for electronic devices.
Scientists at Berkeley Lab have provided the first 'unambiguous demonstration' of phonon-based lasers by observing coherent phonon transport in superlattices. This breakthrough could lead to new advances in heat transfer applications and the development of phonon lasers.
Researchers at UT Austin develop a compact device that breaks symmetry in sound wave transmission, allowing for one-way communication. The team's design may lead to advances in noise control, sonar equipment and wireless devices.
Researchers at MIT have developed flexible materials with nanoscale wrinkles that can control the wavelengths and distribution of waves, including sound and light. This technology could lead to new diagnostic tools for diseases like cancer and enable advanced noise-cancellation systems.
Researchers have discovered new abilities to manipulate light and sound using structured polymers, which could lead to breakthroughs in computing, sensing technology, and soundproofing. The findings suggest the potential for creating thin soundproofing materials that can guide rather than absorb sound.
Researchers have developed phononic properties to control sound and heat, leading to innovative technologies such as acoustic cloaking, thermoelectrics and thermocrystals. These advancements hold promise for reducing energy consumption, environmental noise and transforming waste heat into electricity.
Researchers discovered that locusts use a unique mechanism to process sound, with energy density amplified as waves travel across the eardrum. This phenomenon could lead to practical possibilities for tiny microphones and signal processing.
Researchers in China's Nanjing University have designed a novel acoustic diode that could provide brighter and clearer ultrasound images by eliminating acoustic disturbances. The device, which uses a near-Zero Index Metamaterial, achieves one-way transmission of sound waves, crucial for medical ultrasound applications.
A mutation in the TRIC gene disrupts tight cell junctions, creating a toxic environment that leads to cochlear hair cell loss. Researchers have created a mouse model to study human TRIC-associated deafness and explore potential treatments for restoring tight junction function.
Researchers at Penn State have found a precursor signal to slow earthquakes, which can potentially foretell larger events. By studying the mechanisms behind slow earthquakes, they identified a transition in fault zone properties that supports slower velocities.
Researchers at MIT created a layer of tiny grains that can funnel acoustic waves, potentially leading to smaller electronic devices and new types of blast-shielding material. The discovery could also enable the development of microbalances capable of measuring tiny changes in weight.
Researchers at the University of Bonn used computer simulations to show that seismic waves can focus over long distances, triggering mud eruptions. The study found that a dome-shaped structure under the mud volcano focused energy into the mud layer, liquifying it and injecting it into nearby faults.
Researchers at MIT have discovered a new method to trap light that could find applications in lasers, solar cells, and fiber optics. The phenomenon involves destructive interference from waves of opposite phases, blocking certain wavelengths while allowing others to pass through.
A new test could use sound waves to diagnose blood-related diseases by analyzing the shape and size of red blood cells. Researchers have developed a method that can identify irregularly shaped red blood cells with high confidence, which is a significant indicator of blood-related diseases.
Research finds that boat noise can scare fish away from their habitats, disrupting ecosystem balance. The study suggests regulating human activities in protected areas to mitigate the impact of noise pollution on marine communities.
Using sound waves, researchers can create repeatable patterns of metallic nanomaterials onto substrates that are incompatible with conventional lithography methods. The technique allows for the patterning of nanowires with tunable spacing and density, enabling potential applications in various fields.
Researchers at MIT's Media Lab have developed a new approach to generating holograms that could enable the creation of color holographic-video displays. The technique uses an optical chip, resembling a microscope slide, built for about $10, which can produce high-resolution video images up to 30 times per second.
A Stanford University study reveals that sound waves from earthquakes can reach land tens of minutes before a massive tsunami, potentially providing an early warning. The research identifies a specific acoustic signature that could indicate the presence of a tsunami-generating earthquake, allowing for faster-acting warning systems.
Scientists have created global maps showing how shipping noise affects the ocean, with high levels appearing in northern Atlantic and Pacific Oceans and along major shipping routes. The models take into account factors like water temperature, pressure, and sediment type to predict sound wave propagation.
In a groundbreaking experiment, scientists detected the second sound wave in an ultracold quantum gas, validating a fundamental theory of superfluidity developed by Lev Landau. The observation was made possible by controlling and manipulating individual atoms using lasers.
Graphite has been found to effectively reduce the frictional strength of faults, while sediment processes can generate significant amounts of background noise in oceans. Researchers have also studied how braided river dynamics affect sediment storage and charted the growth of the Turkish-Iranian plateau.
Researchers discovered that brain waves are shaped to selectively track sound patterns from a single speaker while excluding competing sounds. This finding could have important implications for individuals with attention deficit hyperactivity disorder, autism, and aging.
Researchers at Texas A&M University developed a new metamaterial that enables the conversion of ultrasound waves into optical signals, resulting in high-resolution images. This breakthrough technology has the potential to significantly improve diagnostic capabilities in various biomedical applications.
Researchers have created a nanostructure that manipulates electron waves to form plasmonic halos, offering control in light filtering and potential applications in biomedical plasmonics and discrete optical filtering. The unique structure allows for selective light transmission, creating an array of colored 'halos',
Researchers use picosecond ultrasonics to probe human cells' stiffness and viscosity, predicting potential applications in medical implants and cancer research. The technique could help identify cell disease and monitor cell activity without damaging the cells.
Researchers found significant influence of seabird activity on methane and nitrous oxide emissions in the Arctic tundra, contributing to global warming. Meanwhile, a new assessment reveals U.S. cities are less susceptible to water scarcity issues than previously thought.
A new therapeutic ultrasound approach converts light to sound, focusing high-pressure waves to finer points than ever before. The device can blast and cut with pressure, rather than heat, potentially operating painlessly.
A new study published in Frontiers in Human Neuroscience found that children from low socioeconomic status work harder to filter out irrelevant environmental information than those from a high-income background. This is due to learned differences in what they pay attention to, which requires more mental effort.
Scientists develop a device that can form and control sound bullets in water, with potential uses for underwater imaging and biomedical applications. The device, inspired by Newton's cradle, focuses high-amplitude pressure pulses into compact sound bullets that can be tightly focused on a target area.
Researchers at North Carolina State University developed a new technique that uses sound waves to rapidly separate selected collections of cells. This method is faster and more efficient than existing techniques, with a viability rate of over 90%.
Researchers Padma Kant Shukla and Bengt Eliasson develop a unified theory explaining nonlinear dust acoustic shocks and solitary pulses in dusty plasmas. Laboratory experiments reveal large amplitude dust acoustic solitary pulses and shock waves, which their model successfully explains.
A new acoustic cell-sorting chip developed by Penn State researchers can sort cells into multiple channels, paving the way for smaller and more efficient analytical devices. This technology has the potential to replace bulky and expensive current methods, allowing for easier analysis of blood and genetic testing.
Researchers at Argonne National Laboratory have discovered a way to levitate individual droplets of solutions containing different pharmaceuticals using sound waves. This technique allows for the amorphization of drugs, which can improve their bioavailability and efficacy.
University of Cincinnati researchers have created an adaptive, active algorithm to counter sudden road noises, such as those from potholes or bumps. The algorithm aims to reduce road-impact noise perceived by drivers by three to five decibels, significantly minimizing the resulting sound.
A new characterization method using lasers and acoustic waves has provided scientists with a capability to detect buried defects deep inside materials with unprecedented precision. This new technique reveals that the amount of damage caused by radiation in electronic materials may be at least ten times greater than previously thought.
Bioengineers and biochemists at Penn State developed acoustic tweezers that can manipulate living materials like blood cells and small organisms using sound waves. The device can precisely trap and move cellular-scale objects essential for fundamental biomedical research, offering a cost-effective alternative to optical tweezers.
A team of international mathematicians has devised an amplifier that can boost light, sound, or other waves while hiding them inside an invisible container. The researchers propose using this technology to manipulate matter waves, which could enable the creation of a quantum microscope to monitor electronic processes on computer chips.
Researchers at the University of Southampton have developed a new technique to accurately measure gas bubbles in pipelines. By analyzing phase speeds and attenuations, they can estimate the bubble size distribution, crucial for preventing 'blow outs' that led to the Deepwater Horizon oil spill.
Selected acoustic research papers are now available in lay language summaries. The collection explores various topics including microorganism trapping for water purification and the development of speech perception in monolingual and bilingual infants. Researchers also investigate ways to improve orchestra pit acoustics for musicians.
Scientists are using sound waves to monitor oil droplet size in deep-sea blowouts, potentially guiding dispersant use. Preliminary results show acoustic techniques can penetrate the plume and track droplet size, offering a promising alternative to optical devices.
Researchers have converted the Tohoku-Oki earthquake's seismic waves into audio files, enabling the audience to hear pitch and amplitude changes, as well as familiar sounds like thunder, popcorn popping, and fireworks. This unique representation helps explain various aspects of the earthquake sequence, including mainshocks and aftersho...
Physicists at Duke University used supercomputers to simulate an ultra-cold atom and split a virtual electron in half, creating two particles with half the negative charge. This discovery provides clues about the behavior of fundamental particles and challenges traditional notions of particle indivisibility.
Researchers at University of Illinois successfully localized quantum matter waves in three dimensions, a phenomenon theorized decades ago. The findings have implications for various electronics applications and could lead to better understanding and manipulation of materials.
Astronomers have discovered a correlation between gravitational wave events and radio flares, enabling them to pinpoint the source of these cosmic occurrences. By analyzing surrounding interstellar material, researchers can verify that detected gravitational waves come from specific regions of space.