In a previous study, surface melting on the ~001! surface of caprolactam ~C6H11ON! was reported to proceed in a series of layering transitions, followed by a prewetting transition. We have reproduced the original results and shown that they can be better explained by the wetting of hydrated caprolactam ~with H2O molecules at bridging sites between the caprolactam dimers! on caprolactam, and tha...
