The system will be going down for regular maintenance. Please save your work and logout.
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