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Acoustic Waves

All articles tagged with #acoustic waves

technology1 year ago

"Advancements in Neuromorphic Computing: Mimicking Human Brains with New Hardware and AI Circuitry"

An international research team has developed a new concept for neuromorphic computing inspired by human vision, utilizing on-chip phonon-magnon reservoirs to process information with high efficiency and density. The concept, featured in Nature Communications, aims to mimic the brain's ability to process complex signals and form rapid responses. By utilizing acoustic waves and spin waves mixed in a small chip, the system shows potential for significant breakthroughs in emulating natural reservoir computing directly with analog signals, bringing future artificial intelligence systems closer to the efficiency of the human brain.

via Tech Xplore|
#acoustic-waves#artificial-intelligence#hardware
science2 years ago

"Breakthrough: Capturing Sound Waves Inside Diamond Crystal"

Scientists have successfully observed sound waves moving through a diamond crystal using a novel X-ray method. By employing an X-ray microscope, the researchers were able to visualize acoustic waves within mm-sized crystals with subpicosecond precision, allowing them to study the creation, propagation, branching, and energy dissipation of longitudinal and transverse acoustic waves in a diamond. This breakthrough could lead to rapid imaging of various solid objects, such as metals, ceramics, rocks, and bones.

via Interesting Engineering|
#acoustic-waves#diamond-crystal#imaging
science-and-technology2 years ago

"Breakthrough: Physicists Prove Sound Can Travel Through Vacuum"

Physicists from the University of Jyväskylä have demonstrated that sound waves can be transmitted across a vacuum gap between two solids if the materials are piezoelectric. This phenomenon, known as tunneling, occurs when the size of the gap is smaller than the wavelength of the sound wave. The effect can be observed in a wide range of frequencies, from audio to ultrasound and hypersound. The researchers believe this discovery could have applications in microelectromechanical components and heat control.

via Phys.org|
#acoustic-waves#physics#piezoelectric-materials
technology2 years ago

Compact and Affordable LiDAR Breakthrough: No Moving Parts

Researchers at the University of Washington have developed a laser on a chip that uses acoustic waves to bend the laser, eliminating the need for moving parts in LiDAR systems. The resulting integrated circuit (IC) can image objects over 100 feet away and has potential applications in 3D scanning and drones. The system's efficiency currently stands at 5%, but the team aims to achieve 50% efficiency to make it practical for autonomous cars.

via Hackaday|
#3d-scanning#acoustic-waves#laser-on-a-chip
science2 years ago

Unidentified acoustic waves cause mystery tremors in Denmark's Baltic island.

Scientists in Denmark have said that a series of minor tremors recorded on the Baltic island of Bornholm were caused by "acoustic pressure waves from an unknown source." The Geological Survey of Denmark and Greenland said the tremors were "not caused by earthquakes, but by pressure waves from an event in the atmosphere." The source of the waves is still unknown, but they were not caused by controlled explosions in Poland, as previously thought. No one was hurt during the tremors.

via The Associated Press|
#acoustic-waves#bornholm#denmark