Dielectric Nanocup Coating Effect on the Resonant Optical Properties of Individual Au Nanosphere
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AbstractBy finite element method (FEM), dielectric nanocup coating effect on the resonant optical properties of individual Au nanosphere was investigated. It is demonstrated not deleterious to the sensing signals of the nanosphere. The proposed nanocomposite provides an interesting localized surface plasmon resonance (LSPR) sensor with quadratic response, which refractive index (RI) sensitivity is revealed to increase with the RI both of its surrounding and local environment. The differences between the LSPR peak positions of the nanocomposite measured from far-field and near-field spectra are discussed, too. It is believed to shed light on the future applications in surface enhanced Raman spectroscopy, biochemical sensing, and detections.
All Author(s) ListDu CL, Dong JP, Chen T, He CJ, Shi DN
Journal namePlasmonics
Volume Number8
Issue Number4
PublisherSpringer Verlag (Germany)
Pages1523 - 1527
LanguagesEnglish-United Kingdom
KeywordsDielectric nanocup; Finite element method (FEM); Individual Au nanosphere; Localized surface plasmon resonance (LSPR); LSPR sensor with quadratic response
Web of Science Subject CategoriesChemistry; Chemistry, Physical; CHEMISTRY, PHYSICAL; Materials Science; Materials Science, Multidisciplinary; MATERIALS SCIENCE, MULTIDISCIPLINARY; Nanoscience & Nanotechnology; NANOSCIENCE & NANOTECHNOLOGY; Science & Technology - Other Topics

Last updated on 2020-02-08 at 01:33