Figure 48.

Monte Carlo simulations of SAW chains deposition on a flat plasma-activated substrate. (Left panel) Number of attached monomer units, $N_{\mathrm{att}}=N{N}_{\mathrm{chain}}$, with $N_{\mathrm{chain}}$ being the numer of attached chains of N monomers each, as a function of MC steps. Here, $N=68$ (black line), $N=114$ (orange line) and $N=200$ (red line). The data collapse above ${10}^6$ steps suggests that $N_{\mathrm{att}}$ becomes independent of N asymptotically. (Right panel) An example of a simulated PEG thin film, on a substrate of 200 × 200 sites and system height 100 sites, with a lattice constant $a_0=0.36$ nm, and SAW chains of $N=200$ monomers. The total number of attached chains is 834 in this example. The color scale is proportional to monomer height (adapted from [444]).