Optical Control of Nanomechanical Brownian Motion Eigenfrequencies in Metamaterials.

ABSTRACT: Nanomechanical photonic metamaterials provide a wealth of active switching, nonlinear, and enhanced light-matter interaction functionalities by coupling optically and mechanically resonant subsystems. Thermal (Brownian) motion of the nanostructural components of such metamaterials leads to fluctuations in optical properties, which may manifest as noise, but which also present opportunity to characterize performance and thereby optimize design at the level of individual nanomechanical elements. We show that nanomechanical motion in an all-dielectric metamaterial ensemble of silicon-on-silicon-nitride nanowires can be controlled by light at sub-μW/μm² intensities. Induced changes in nanowire temperature of just a few Kelvin and nonthermal optical forces generated within the struct

SUBMITTER: Li J 

PROVIDER: S-EPMC9185736 | biostudies-literature | 2022 Jun

REPOSITORIES: biostudies-literature