Current Trends in Nanoporous Anodized Alumina Platforms for Biosensing Applications

Figure 8

(a) Layer by layer deposition using polyelectrolytes like poly(sodium-4-styrenesulfonate) (PSS) (greenish) and poly-L-lysine (PLL) (yellowish) on NAA and (b) the effective optical thickness (EOT) plot of sensing of proteinase-K by layer by layer coated polyelectrolytes on NAA thicknesses of 1.3 (i), 3 (ii), and (iii) 4.4 μm using IRS system [53].

(a)

(b)