Generation of hexagonal close-packed ring-shaped structures using an optical vortex.

ABSTRACT: An optical vortex possesses a ring-shaped spatial profile and orbital angular momentum (OAM) owing to its helical wavefront. This form of structured light has garnered significant attention in recent years, and it has enabled new investigations in fundamental physics and applications. One such exciting application is laser-based material transfer for nano-/micro-fabrication. In this work, we demonstrate the application of a single-pulse optical vortex laser beam for direct printing of ring-shaped structures composed of hexagonal close-packed, mono-/multi-layered nanoparticles which exhibit 'structural color'. We compare and contrast the interaction of the vortex beam with both dielectric and metallic nanoparticles and offer physical insight into how the OAM of vortex beams interacts with m

SUBMITTER: Kawaguchi H 

PROVIDER: S-EPMC11501167 | biostudies-literature | 2022 Jan

REPOSITORIES: biostudies-literature