NTT Corp. (NTT) and Okayama University have developed a solution to the increasing problem of IoT signal interference by creating a topological ultrasonic circuit. Claimed as the first of its kind, ...

Ultrasonics or ultrasound is a radar-like system that uses ultrasonic signals at frequencies above those typical for human hearing, usually above 16 to 20 kHz. The 40- to 70-kHz range tends to be most ...

A new technology has been developed that enables cuffless noninvasive blood pressure monitoring by using ultrasonic to track ...

A device that can perform 3D ultrasound imaging with just one large piezoelectric ultrasound transmitter and receiver has been developed by researchers in the Netherlands. Most ultrasound imagers use ...

Ultrasonic flow meters are non-invasive devices that use acoustic vibrations to determine the flow rate of a liquid. There are two types of ultrasonic flow meters – Doppler and transit time. Both ...

Apple is researching the use of ultrasonic ranging to determine how far away iPhones are from each other before opening up lines of communication. Apple's AirDrop is a highly-useful tool for many ...

As any scuba diver will know, communicating while underwater can be difficult. Although it's possible to use hand signals, you still have to get other divers' attention so that they see those signals ...