Melting of Krypton Layers Adsorbed in Cylindrical Pores

摘要

The mechanism of melting and its correlation to adsorption on cylindrical surfaces of silica-like cylindrical nanopores has been studied for the first time. The size of the pores has been defined by its diameter (4 nm in this work). As an example, we have analyzed krypton atoms as adsorbed system. We have shown, that the layer adsorbed on the surface of the pore has much lower melting temperature (T = 77.5 K) than both the filled pore (T = 90 K) and the bulk system (T = 118 K). The mechanism of melting in the layer is a continuous transition and depends on the vacancy formation. The layering transition changes its character with temperature from a sharp transition below the melting temperature into a continuous one above it.