Versatile Multilayer Metamaterial Nanoparticles with Tailored Optical Constants for Force and Torque Transduction.

ABSTRACT: The ability to apply force and torque directly to micro- and nanoscale particles in optical traps has a wide range of applications. While full control of both force and torque in three dimensions has been realized using top-down fabrication of rod-shaped particles composed of birefringent crystalline materials, widespread usage of such particles is limited as the optical constants of the predominant birefringent materials (quartz SiO₂ and rutile TiO₂) preclude coverage of the full application space of optical trapping. Here, we show that multilayer metamaterial nanoparticles provide access to a wide range of optical constants that can be specifically tuned for each application. Selecting the material pair Nb₂O₅/SiO₂ from the library of

SUBMITTER: Tang Y 

PROVIDER: S-EPMC7690042 | biostudies-literature | 2020 Nov

REPOSITORIES: biostudies-literature