Solid gas surfaces: The porosity of frozen rare-gas layers (Ar, Kr, and Xe) was visualized by a replica technique. Ag films were produced by condensation of Ag atoms onto freshly prepared solid (frozen) rare-gas layers. The resulting replicas of the rare-gas surfaces were investigated by atomic force (see two- and three-dimensional pictures) and scanning electron microscopy.
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Nepijko et al. (2005) studied this question.