Until recently, ultrasonic inspection of aircraft has been tedious and expensive. Typically, it involved using water or a gel to transmit the sound waves. Parts with irregular shapes were difficult to ...

Scientists have developed an ultrasonic imaging system, which can be deployed on the tip of a hair-thin optical fiber, and will be insertable into the human body to visualize cell abnormalities in 3D.

The use of sound waves of high frequency, to penetrate the skin and generate an electronic photographic image or video of an internal organ, is called ultrasonography or ultrasound. Only soft tissues ...

Researchers at the California Institute of Technology (Caltech) have built a device that produces highly focused, high-amplitude acoustic signals dubbed "sound bullets." Called a nonlinear acoustic ...

Understanding how the brain creates conscious experience remains one of science’s most difficult challenges. Brain scans and ...

Figure 1: Two plots showing the results of using ultrasound to probe a magnetic material known as an antiferromagnet at temperatures of 4.2 kelvin (left) and 10 ...

Today’s data-storage devices mostly rely on ferromagnets—magnetic materials such as iron, nickel and cobalt in which all the magnetic fields of the atoms are aligned with each other. But another class ...