Torsional Mechanical Oscillator Driven by the Orbital Angular Momentum of Sound
Language
en
Article de revue
This item was published in
Physical Review Applied. 2020-06, vol. 13, n° 6
American Physical Society
English Abstract
We demonstrate that the orbital angular momentum of radiating waves can be used to drive a mechanical oscillator, an option that has remained elusive to date on experimental grounds whatever the nature of the waves. This ...Read more >
We demonstrate that the orbital angular momentum of radiating waves can be used to drive a mechanical oscillator, an option that has remained elusive to date on experimental grounds whatever the nature of the waves. This is done using an amplitude-modulated ultrasonic wave interacting with a centimeter-size torsional pendulum. Achieved resonant quantitative measurements of the acoustic radiation torque and material properties set the basis for orbital-angular-momentum-based metrology applications and possibly cooling of the rotational degree of freedom of macroscopic objects.Read less <
Origin
Hal imported