NASA NTRS · 19830000227
Phase Modulation Varies Average Acoustic Torque
Abstract
Rotation of acoustically levitated objects controlled. Phase difference alternated between +90 degrees and -90 degrees. If system is at positive phase difference during greater portion of modulation cycle than at negative phase difference (or vice versa), there is nonzero time-averaged acoustic torque.
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Elleman, D. D., Croonquist, A. P., Wang, T. G.. 1983-10-01. Phase Modulation Varies Average Acoustic Torque. https://ntrs.nasa.gov/citations/19830000227
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