A magnetically actuated acoustic metamaterial
Space coiling acoustic metamaterials are static and require manual reconfiguration for sound-field modulation. In a new report published in Communications Materials, Christabel Choi, and a team of scientists in computer science and engineering in the.....»»
Quantum phase transition detected on a global scale deep inside the Earth
The interior of the Earth is a mystery, especially at greater depths (> 660 km). Researchers only have seismic tomographic images of this region and, to interpret them, they need to calculate seismic (acoustic) velocities in minerals at high pressure.....»»
Moths use acoustic decoys to dodge bat attacks
In dark skies around the world there unfolds a nightly battle between bats and the nocturnal insects upon which they feast. You'd have thought bats, equipped as they are with echolocation, in which they navigate using sound, would have no trouble gob.....»»
"Shadow waveguide" casts complex acoustic patterns to control particles
Engineers at Duke University have devised a new approach to using sound waves to manipulate tiny particles suspended in liquid in complex ways. Dubbed a "shadow waveguide," the technique uses only two sound sources to create a tightly confined, spati.....»»
Tai-Saw eyes considerable sales gains for car, networking applications in 3Q21
Taiwan-based Tai-Saw Technology, dedicated to supplying SAW (surface acoustic wave) filters and quartz crystal components, is optimistic its shipments for automotive, Wi-Fi 6 and other networking applications will grow significantly in the third quar.....»»
Primax expects acoustic components sales to drive 3Q21 growth
Primax Electronics has expressed optimism about its operations in the third quarter of 2021, citing robust growth of its acoustic components sales......»»
Spin-sonics: Acoustic wave gets the electrons spinning
Researchers have detected the rolling movement of a nano-acoustic wave predicted by the famous physicist and Nobel prize winner Lord Rayleigh in 1885. This phenomenon can find applications in acoustic quantum technologies or in so-called "phononic" c.....»»
Engineers may learn from bees for optimal honeycomb designs
Perfect hexagonal structures inspired by honeycombs in bee nests are widely used to build everything from airplane wings, boats, and cars, to skis, snowboards, packaging and acoustic dampening materials......»»
Researchers devise a way to levitate small objects from reflective surfaces using sound waves
As Science Alert highlights, engineers Shota Kondo and Kan Okubo from the Tokyo Metropolitan University split a transducer array into blocks, making it more manageable. Next, they employed an inverse filter to recreate sounds based on the acoustic wa.....»»
Acoustic tweezers can pick up objects without physical contact
Researchers from Tokyo Metropolitan University have developed a new technology which allows non-contact manipulation of small objects using sound waves. They used a hemispherical array of ultrasound transducers to generate a 3D acoustic field that st.....»»
Acoustic research sheds new light on whale sounds
Scientists from British Antarctic Survey (BAS), Scottish Association for Marine Science (SAMS), and international collaborators have this week published the first detailed research on the sounds made by southern right whales on their high latitude fe.....»»
Dell’s $199 UltraSharp 4K webcam has AI on board—but no microphone
This high-tech webcam also offers an IR sensor for Windows Hello compatibility. A small desktop tripod and a monitor mount are both included with the new UltraSharp, which magnetically attaches.....»»
Researchers 3D-print rotating microfilter for lab-on-a-chip applications
Researchers have fabricated a magnetically driven rotary microfilter that can be used to filter particles inside a microfluidic device. They made the tiny turning filter by creating a magnetic material that could be used with a very precise 3D printi.....»»
Rocksmith+ debuts as a subscription service, PC closed beta starts today
Rocksmith+ subscribers can look forward to a suite of different features geared toward teaching them how to play an acoustic, electric, or bass guitar......»»
Novel liquid crystal metalens offers electric zoom
Researchers from Cornell University's School of Applied and Engineering Physics and Samsung's Advanced Institute of Technology have created a first-of-its-kind metalens—a metamaterial lens—that can be focused using voltage instead of mechanically.....»»
Novel materials: Sound waves traveling backward
Acoustic waves in gases, liquids, and solids usually travel at an almost constant speed of sound. So-called rotons are an exception: their speed of sound changes significantly with the wavelength, and it is also possible that the waves travel backwar.....»»
Acoustic solutions made from natural fibers can reduce buildings" carbon footprints
Good acoustics in the workspace improve work efficiency and productivity, which is one of the reasons why acoustic materials matter. The acoustic insulation market is already expected to hit 15 billion USD by 2022 as construction firms and industry p.....»»
World"s smallest, best acoustic amplifier emerges from 50-year-old hypothesis
Scientists at Sandia National Laboratories have built the world's smallest and best acoustic amplifier. And they did it using a concept that was all but abandoned for almost 50 years......»»
Controlling magnetization by surface acoustic waves
Using the circular vibration of surface acoustic waves, a collaborative research group have successfully controlled the magnetization of a ferromagnetic thin film......»»
Megablocks on the seafloor reveal that half of Anak Krakatau island collapsed causing the 2018 Sunda Strait tsunami
For the first time, scientists have been able to study the deposits of a volcanic island landslide-tsunami immediately after the incident with the benefit of modern acoustic equipment. Dr James Hunt from the National Oceanography Centre (NOC), in par.....»»
The Cheetah"s Fluffy Tail Points the Way for Robots With High-Speed Agility
It’s not the mass, it’s the aerodynamics—and the result could be more sprightly machines Almost but not quite a decade ago, researchers from UC Berkeley equipped a little robotic car with an actuated metal rod with a weight on the end and.....»»