Figure 6
Refractive index sensitivities of capped silver nanoslits with a period of 900 nm for different incident angles. (a) Measured transmission spectra in different water-glycerin solutions at an incident angle of 33°. (b) The wavelength shift versus the refractive index for the 1st order resonance mode with different incidence angles from 15° to 40°. (c) The experimental and calculated bulk sensitivity as a function of the incident angle from 0° to 45° for the 1st order resonance mode.
