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New Dimensions in the Sol–Gel Process
Author(s) -
Reuter Hans,
Brandherm MariaTheresia
Publication year - 1995
Publication title -
angewandte chemie international edition in english
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 0570-0833
DOI - 10.1002/anie.199515781
Subject(s) - sol gel , alkoxide , materials science , layer (electronics) , thin film , hydrolysis , oxide , aqueous solution , phase (matter) , chemical engineering , process (computing) , metal , composite material , nanotechnology , chemistry , organic chemistry , catalysis , metallurgy , computer science , operating system , engineering
Particularly thin oxide layers of 4.3 nm —previously the layer thickness was at least 50 nm—were obtained with a new procedure of the solution sol–gel process (SSG). Here, the metal alkoxide is spread as a film on an aqueous phase and can thus be hydrolyzed on both sides of the film (shown on the right). These thin films can also be readily transferred onto other substrates. Furthermore, the SSG process has enabled the preparation of tubes with outer diameters of 0.05–1.00 μm for the first time.