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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 detected at wavelengths near 400 nm.

SUBMITTER: Jen YJ

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

REPOSITORIES: biostudies-literature

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

Jen Yi-Jun YJ Liu Wei-Chen WC Cong Ming-Yang MY Chan Teh-Li TL

Scientific reports 20201119 1

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 ph ...[more]

PMID: 33214611

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