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Self‐Assembled Silver–Gold Nanoisland Films on Glass for SERS Applications
Author(s) -
Babich Ekaterina,
Redkov Alexey,
Reduto Igor,
Lipovskii Andrey
Publication year - 2018
Publication title -
physica status solidi (rrl) – rapid research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.786
H-Index - 68
eISSN - 1862-6270
pISSN - 1862-6254
DOI - 10.1002/pssr.201700226
Subject(s) - materials science , raman spectroscopy , scanning electron microscope , substrate (aquarium) , nanostructure , nanotechnology , spectroscopy , surface enhanced raman spectroscopy , nanometre , deposition (geology) , diffusion , optoelectronics , colloidal gold , chemical engineering , optics , nanoparticle , raman scattering , composite material , oceanography , physics , quantum mechanics , geology , paleontology , engineering , sediment , biology , thermodynamics
We present a study of resonant optical properties of gold‐protected silver nanoisland films. Silver nanoislands were grown on a glass substrate using out‐diffusion technique, the growth was followed by the deposition of nanometer‐thick gold coatings. Scanning electron microscopy and optical spectroscopy were used to characterize morphology and extinction spectra of the grown combined silver–gold nanostructures. Micro Raman spectroscopy of the combined nanoislands has demonstrated their signal enhancement factor exceeding that one of the initial silver nanoislands.