ON THE MORPHOLOGY AND SURFACE GEOMETRY OF VYCOR

Authors
KATSAROS F MAKRI P MITROPOULOS A KANELLOPOULOS N KEIDERLING U WIEDENMANN A
Citation
F. Katsaros et al., ON THE MORPHOLOGY AND SURFACE GEOMETRY OF VYCOR, Physica. B, Condensed matter, 234, 1997, pp. 402-404
Citations number
8
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physica. B, Condensed matter → ACNP
ISSN journal
09214526
Volume
234
Year of publication
1997
Pages
402 - 404
Database
ISI
SICI code
0921-4526(1997)234:<402:OTMASG>2.0.ZU;2-B
Abstract
A Vycor porous glass is examined by adsorption of H2O/D2O as well as C H2Br2 in conjunction with small-angle scattering of neutrons and X-ray s, respectively. For dry samples. the data indicates a fractal surface with a fractal dimension D similar to 2.6. After the deposition of an adsorbed film, defractalization is observed. However, this procedure is different for H2O and CH2Br2. It is suggested that H2O yields a sof t hydrogel on the Vycor surface. Theoretical considerations on the mor phology of the pore structure as well as the surface geometry are give n in terms of two-dimensional fractal configurations.