Figure 4.

Results of the optical characterization. (a) Porosity dependence on the pore-widening time. (b) Thickness dependence on the total charge. (c) Effective refractive index of the NAA layer for the wavelength λ = 750 nm as a function of the pore-widening time. The dashed lines are a guide to the eye.

Rahman et al. Nanoscale Research Letters 2012 7:474   doi:10.1186/1556-276X-7-474
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