Large‐Area Plasmonic Substrate of Silver‐Coated Iron Oxide Nanorod Arrays for Plasmon‐Enhanced Spectroscopy |
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Authors: | Waldemir Moura Carvalho Jr Dr Diogo Volpati Vitor A Nunes Carvalho Prof Ricardo F Aroca Prof Carlos J L Constantino Prof Flavio L Souza |
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Institution: | 1. Centro de Ciências Naturais e Humanas (CCNH), Universidade Federal do ABC, R. Santa Adélia 166, Santo André SP (Brazil);2. Faculdade de Ciências e Tecnologia, UNESP Univesidade Estadual Paulista, Presidente Prudente ‐ SP, CEP 19060‐900 (Brazil);3. Materials and Surface Science Group, University of Windsor, Windsor, Ontario N9B 3P4 (Canada) |
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Abstract: | One‐dimensional iron oxide materials fabricated on conducting glass substrates and their unique properties make these nanostructures promising candidates for a wide range of applications. Herein, vertically oriented α‐Fe2O3 nanorod arrays synthesized under hydrothermal conditions over a large area are described, as an active platform for surface‐enhanced resonance Raman scattering (SERRS) and surface‐enhanced fluorescence (SEF). From scanning electron microscopy images the formation of a homogeneous distribution of vertically oriented rods in a large area is confirmed. For activating the localized surface plasmon resonances, which are responsible for SERRS and SEF, a 6 nm layer of Ag is deposited onto the α‐Fe2O3 nanorod arrays by physical vapor deposition to form Ag islands. |
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Keywords: | fluorescence iron oxide nanostructures Raman spectroscopy surface plasmon resonance |
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