Fig. 9. ATR-SERS and ATR-SEIRA optics for LSP and SPP coupling.
a Schematic diagram of a Kretschmann SPR sensor. b AOI-dependent SERS spectra on silver film and nanoparticle-modified silver film modified by 4-Mpy single-layer molecule. c The SERS spectra of 4-Mpy on silver film and nanoparticle-modified silver film at an incident angle of SPR angle52. Adapted a–c with permission from ref. 52 Copyright (2011) Royal Society of Chemistry. d Schematic diagram of ATR-SEIRAS configuration containing a ZnSe hemicylindrical prism and metal island film. e ATR-SEIRA spectra of a Pt film electrode in CO-saturated 0.1 M HClO4 at −0.2 V. Spectra 1a and 2a were recorded at the incidence angle θ = 20°, and spectra 1b and 2b at θ = 70° with ZnSe/air/Si (1a and 1b) and ZnSe/water/Si (2a and 2b) windows, respectively. f SEIRA band intensity for COL on the Pt electrode as a function of θ, measured with the ZnSe hemicylindrical prism94. Reprinted d–f with permission from ref. 101 Copyright (2008) American Chemical Society