Investigation of SolGel Derived Nanomaterials
with a Hierarchical Structure

V. A. Moshnikov, I. E. Gracheva*, and M. G. An’chkov

St. Petersburg State Electrotechnical University “LETI,” ul. Professora Popova 5, St. Petersburg, 197376 Russia

*e-mail: iegrachova@mail.ru

Received December 25, 2010

Abstract—The basic processes of self-assembly in sol–gel technologies during the formation of network nano-
materials with a hierarchical structure have been considered. The gas-sensitive fractal structures have been pre-
pared in systems based on dioxides of tin and silicon. The formation of a structure of nanocomposites has been
studied using atomic force microscopy and electron microscopy methods. The gas-sensitive properties of nano-
materials have been investigated. A method for diagnosing objects with a hierarchical structure based on metal
oxides has been proposed.

Keywords: sol–gel method, hierarchical structure, gas-sensitive properties

DOI: 10.1134/S1087659611050063

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