Researchers are developing a new type of sensor that reacts to certain sound waves, causing it to vibrate. The sensor is a metamaterial that acquires its special properties through the structuring of ...

Researchers at the Georgia Institute of Technology have created a passive motion/contact sensor that detects motion using only sound. Without electricity, electronics, or batteries. The sensors are ...

Acoem, a provider of advanced physical security solutions, will showcase its next-generation gunshot detection system. Acoem ATD (Acoustic Threat Detection) technology is designed for security ...

The photoacoustic effect has been known for more than 150 years: Gases exposed to light heat up. Pulsing the light generates ...

Sensors that monitor infrastructure, such as bridges or buildings, or are used in medical devices, such as prostheses for the deaf, require a constant supply of power. The energy for this usually ...