title: The Surface Geometry of Vycor
abstract: The interface geometry of Vycor porous glass was examined by adsorption of water in conjunction with small-angle scattering of X rays and neutrons. When the sample is dry, a fractal surface with a fractal dimension D approximately 2.5 was detected. When wet, a soft hydrogel is formed, resulting in a diffuse boundary. To observe a fractal surface, thorough drying of the sample is necessary, however. It was shown that a small amount of water, 3% w/w, is sufficient to render the surface smooth. Copyright 1997Academic Press
authors.affiliation: Institute of Physical Chemistry, National Center for Scientific Research "Demokritos", 153 10 Ag. Paraskevi Attikis, Greece
authors.initials: AC
authors.lastname: Mitropoulos
authors.initials: PK
authors.lastname: Makri
authors.initials: NK
authors.lastname: Kanellopoulos
authors.initials: U
authors.lastname: Keiderling
authors.initials: A
authors.lastname: Wiedenmann