Scattering theory from artificial piezoelectric-like meta-atoms and molecules

Abstract

Inspired by the natural piezoelectric effect, we introduce hybrid-wave electromechanical meta-atoms and meta-molecules that consist of coupled electrical and mechanical oscillators with similar resonance frequencies. We propose an analytical model for the linearized electromechanical scattering process, and explore its properties based on first principles. We demonstrate that by exploiting the linearized hybrid-wave interaction, one may enable functionalities that are forbidden otherwise, going beyond the limits of today's metamaterials. As an example we show an electrically deep sub-wavelength dimer of meta-atoms with extremely sensitive response to the direction-of-arrival of an impinging electromagnetic wave. This scheme of meta-atoms and molecules may open ways for metamaterials with a plethora of exciting dynamics and phenomena that have not been studied before with potential technological implications in radio-frequencies and acoustics.

6 pages, 3 figures

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• Nonreciprocity and magnetic-free isolation based on optomechanical interactions
• Static non-reciprocity in mechanical metamaterials
• Fundamentals of optical non-reciprocity based on optomechanical coupling
• Master-Slave Locking of Optomechanical Oscillators Over A Long Distance
• Optomechanically-induced spontaneous symmetry breaking

Cited by in corpus (1)

• Electrically small matched antennas with time-periodic and space-uniform modulation