It’s a question I’m sure was keeping you up at night: can you make an object spin with a sound wave? The answer, generally speaking, used to be no. Now, though, mechanical engineers have taken a look ...

Noise—small thermal or quantum fluctuations of particles that generate electric or magnetic signals—is generally thought of as undesirable interference, obscuring the true signals scientists are ...

Acoustic frequency filters, which convert electrical signals into miniaturized sound waves, separate the different frequency bands for mobile communications, Wi-Fi, and GPS in smartphones. Physicists ...

An array of miniature turntables could offer a powerful new way to control the flow of sound. The proposed device, reported in the March 20 Physical Review Letters, would channel sound waves in a ...

Microwave spectroscopy of magnons, phonons and magnon-polarons as a function of magnetic field (x-axis) and frequency (y-axis). Data has been recorded with a vector network analyser. The horizontal ...

There are two fantastic papers in Physical Review Letters this week that made me smile. Both of them are about controlling macroscopic objects using waves. While there are practical applications for ...

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Spin noise spectroscopy is an optical technique which can probe spin resonances non-perturbatively. First applied to atomic vapours, it revealed detailed information about nuclear magnetism and the ...