Selective activation of localized mechanical resonators via a phonon waveguide

An electromechanical phonon waveguide that is weakly connected to three localized mechanical resonators is developed. A nonlinear elastic effect induced by intense piezoelectric excitation enables acoustic waves in the waveguide to be transferred to the spatially distinct resonators. Adjusting the frequency of the nonlinear modulation enables a target resonator to be selectively driven by switching the acoustic wave from the waveguide to it. The ability to remotely control multiple mechanical resonators via the phonon waveguide opens up the possibility of a phonon network in which acoustic waves can be guided to distributed sub-systems. Published by AIP Publishing.