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 manipulating a variety ...

Anti-resonant hollow-core optical fiber reduces 'noise'

A new hollow optical fiber greatly reduces the "noise" interfering with the signals it transmits compared to the single-mode fibers now widely used, researchers at the University of Rochester report.

Lasers generate underwater sound

Scientists at the Naval Research Laboratory (NRL) are developing a new technology for use in underwater acoustics. The new technology uses flashes of laser light to remotely create underwater sound. The new acoustic source ...

New metamaterial manipulates sound to improve acoustic imaging

Researchers from North Carolina State University and Duke University have developed a metamaterial made of paper and aluminum that can manipulate acoustic waves to more than double the resolution of acoustic imaging, focus ...

Sound provides new insight into the lives of blue whales

The blue whale (Balaenoptera musculus) is the largest animal ever to inhabit Earth. Despite its gargantuan size, many aspects of its biology, behavior and ecology still elude us. This magnificent mammal spends most of its ...

Study traces evolution of acoustic communication

Imagine taking a hike through a forest or a stroll through a zoo and not a sound fills the air, other than the occasional chirp from a cricket. No birds singing, no tigers roaring, no monkeys chattering, and no human voices, ...

Researchers use acoustic waves to move fluids at the nanoscale

A team of mechanical engineers at the University of California San Diego has successfully used acoustic waves to move fluids through small channels at the nanoscale. The breakthrough is a first step toward the manufacturing ...

Radar exposing water leaks

A wide range of technologies deal with water leaks. But the most recent innovative solutions aim to be far more effective than any other prior technologies.

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