New metamaterials device focuses sound waves like a camera lens
(Phys.org) -- In a cover article in The Journal of Applied Physics, a team of Penn State researchers has designed and computationally tested a type of manmade metamaterial capable for the first time of man ...
Earthquake acoustics offer hint that a tsunami is imminent, researchers find
(Phys.org) —On March 11, 2011, a magnitude 9.0 undersea earthquake occurred 43 miles off the shore of Japan. The earthquake generated an unexpectedly massive tsunami that washed over eastern Japan roughly 30 minutes later, ...
Females butterflies can smell if a male butterfly is inbred
The mating success of male butterflies is often lower if they are inbred. But how do female butterflies know which males to avoid? New research reveals that inbred male butterflies produce significantly less ...
Acoustic tweezers can position tiny objects
(PhysOrg.com) -- Manipulating tiny objects like single cells or nanosized beads often requires relatively large, unwieldy equipment, but now a system that uses sound as a tiny tweezers can be small enough ...
Comet landing named Physics World 2014 Breakthrough of the Year
The first ever landing of a man-made probe onto a comet has been named Physics World Breakthrough of the Year for 2014.
Acoustic cell-sorting chip may lead to cell phone-sized medical labs
A technique that uses acoustic waves to sort cells on a chip may create miniature medical analytic devices that could make Star Trek's tricorder seem a bit bulky in comparison, according to a team of researchers.
Radiation damage bigger problem in microelectronics than previously thought
The amount of structural damage that radiation causes in electronic materials at the atomic level may be at least ten times greater than previously thought.
Authors explore security threat of covert acoustical mesh networks in air
Syracuse biologist reveals how whales may 'sing' for their supper
Humpback whales have a trick or two, when it comes to finding a quick snack at the bottom of the ocean. But how they pinpoint that meal at night, with little or no available light, remains a mystery.
Crickets' calling song hits the high notes
(Phys.org) —Research has detailed how acoustic communication has evolved within a unique species of cricket which exploits extremely high frequency harmonics to interact.
A layer of tiny grains can slow sound waves
In some ways, granular material—such as a pile of sand—can behave much like a crystal, with its close-packed grains mimicking the precise, orderly arrangement of crystalline atoms. Now researchers at ...
Why fish talk: Clownfish communication establishes status in social groups (w/ Video)
Clownfish produce sounds to establish and defend their breeding status in social groups, but not to attract mates, according to research published November 7 in the open access journal PLOS ONE by Orphal ...
Rainforest plant developed sonar dish to attract pollinating bats
The researchers discovered that a rainforest vine, pollinated by bats, has evolved dish-shaped leaves with such conspicuous echoes that nectar-feeding bats can find its flowers twice as fast by echolocation. The study is ...
New model gives scientists guidelines to develop 'smart' composite materials with wrinkled microstructures
Many natural composite materials have evolved to wrinkle in response to certain stimuli: The eye of the squid is lined with wavy layers of silvery reflectors that give it a silvery sheen. In the cell walls of many plants, ...