Duke University has built the first 3D omnidirectional acoustic invisibility cloak. The cloaking device, which takes the form of a pyramid of perforated plastic, is hidden from sound waves ...

Thermal metamaterials can bring a lot of benefits to electronic design. Electronic components are easily damaged by intense ...

Unlike previous acoustic cloaking devices, this one works in all three dimensions. It doesn't matter which direction the sound is coming from or where the observer is located.

Until now, it was only possible to optimize an acoustic cloaking structure for the air-environment. However, with this latest research, Acoustic cloak designed by topology optimization for ...

PORTLAND, Ore. — Duke University engineers will reveal Friday (Jan. 11) details of an acoustic cloak fabricated from metamaterials that they claim can render objects invisible to sonar. Although the ...

With the study, Electromagnetic-acoustic biphysical cloak designed through topology optimization, published in the journal Optics Express, it is now possible to select materials that make up the ...

[5] Broadband Acoustic Cloak for Ultrasound Waves. Physical Review Letters (2011). [6] A chiral elastic metamaterial beam for broadband vibration suppression. Journal of Sound and Vibration (2014).

Another speculative member of the acoustic cloaking stocks category, General Dynamics (NYSE: GD) is likely responsible for helping develop the technology, due to its direct involvement in making ...

Specifically, acoustic cloaking technology allows for the transmission of sound to be manipulated in such a way that it may not be detected.