Figure 3
From: Diffractive Optical Analysis for Refractive Index Sensing using Transparent Phase Gratings
(a) Measurement of layer-by-layer growth of polyelectrolyte films comprising of PAH and PAA. The arrows indicate the addition of the polymer solution to the sensor alternating between PAH (green arrows) and PAA (pink arrows) to get a total of 8 bi-layers (b) Shows the repeatability of surface adsorption measurements. The MBI model closely matches the experimental results. (c,d) Shows the ability to obtain time-resolved adsorption data which is useful for estimating the kinetic parameters of surface reactions.
