Bowtie nano-aperture antenna mounted on a fibered tip for different applications: tweezers and remote sensing

Abstract

The optical properties of a Bowtie Nano-Aperture antenna (BNA) [1], mainly the confinement of light in the gap zone and the polarization sensitivity were widely attractive for many researches to study the origin of this phenomenon, and to discuss various applications in which the BNA could present high competency. However, the beginning of the BNA was by engraving it onto a metallic flat layer, but it was as well used for near field applications by mounting it at the apex of a SNOM tip so that it acts as a localized nano-source without background illumination allowing full-vectorial electric near-field detection.