The microsphere, levitated by the dual beam optical tweezer (green), is driven by the active optomechanical system (red) to generate nonlinear phonon lasers (coloured waves). Meanwhile, the injected ...

Create a focused speaker so your music targets only the listener. That demodulates at 40 kilohertz, with an H-bridge and ...

“In this power range, the material properties of mirrors, lenses, and prisms significantly limit their use, and such optical elements are easily damaged by strong laser beams in practice,” said ...

Surface acoustic wave (SAW) filters already fill our mobile devices, but a new breakthrough finds a way to make them smaller, potentially leading to even more compact devices.

Engineers have turned the physics of earthquakes into a tool for shrinking and supercharging the chips inside phones and ...

Scientists in Finland have unveiled a remarkable laboratory breakthrough that allows electricity to be guided through open air using ultrasonic sound waves, a development that has gone viral globally ...