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SERS EM field enhancement study through fast Raman mapping of Sierpinski carpet arrays
Author(s) -
Hsu Keng H.,
Back Ju H.,
Fung KinHung,
Ferreira Placid M.,
Shim Moonsub,
Fang Nicholas X.
Publication year - 2010
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/jrs.2581
Subject(s) - raman scattering , raman spectroscopy , sierpinski triangle , context (archaeology) , materials science , fractal , excitation , sierpinski carpet , plasmon , field (mathematics) , optics , physics , optoelectronics , mathematics , mathematical analysis , paleontology , quantum mechanics , pure mathematics , biology
Self‐similar Sierpinski carpet fractals were fabricated using a new nanopatterning technique, i.e. solid‐state superionic stamping (S4), to study the effect of feature size on plasmon‐enhanced Raman scattering. A real‐time Raman image showing electromagnetic (EM) field enhancement contrast is demonstrated. The effects were studied and explained in the context of modes of surface plasmon excitation. Additionally, we find that the EM field enhancement supported by the fractals extends further spatially as compared to continuous Ag surfaces. Copyright © 2010 John Wiley & Sons, Ltd.