Bideposited silver nanocolloid arrays with strong plasmon-induced birefringence for SERS application.

ABSTRACT: Silver nano-rod, nano-zigzag, nano-saw, and nano-particle arrays are fabricated with glancing angle bideposition. The structure-dependent anisotropic optical properties of those bideposited nanostructured arrays are measured and investigated. The equivalent birefringence values of nano-rod and nano-zigzag arrays are much larger than crystals found in nature and liquid crystal used in display products. The fact that induced localized plasmon-magnetic field between nanorods dominates the strong phase retardation between p-polarized and s-polarized transmitted wave. For the nano-saw, the strong localized electric field induced between the saw teeth leads to strong SERS signals. Although the bideposited nanoparticles own weak morphological anisotropy, strong optical phase retardation is still

SUBMITTER: Jen YJ 

PROVIDER: S-EPMC7678831 | biostudies-literature | 2020 Nov

REPOSITORIES: biostudies-literature