The epitaxy of Poly-L-alanine on L-quartz and a glass-ceramic



The effect of surface contamination on the morphology and orientation of poly-L-alanine on a glass-ceramic and the (1010) and (1011) crystal faces of L-quart is dealt with both microscopically and graphically. “Cleaning” with an r. f. plasma cleaner and contamination with pure nitrogen results in a change in the number of active sites with a corresponding change in the relative orientation of the polymer and the strength of bonding.