Abstract
We design three all silicon nanoantenna structures with ultra-high electric field enhancement, namely, a multi-ring structure, a nanolight-motor-structure, and an array-capture-structure. The structures ensure high-peak intensity enhancement and have the ability to realize multi-functional nanoparticle capture. The power dissipations produced by our all-dielectric structures are several orders of magnitude lower than those produced by the metallic counterparts. There are modest local joule heating and negligible fluidic convection flow. It is noted that we employ the plane wave light instead of the laser source to simulate the 20 nm polystyrene particle capture process. Therefore, such structures simplify the optical equipment and are expected applying onto labs-on-chips.
Published Version
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