Abstract: Methods for the deposition of thin films comprising at least preparing a solution containing at least one transition metal oxide powder in a solvent, continuously stirring said solution in order to form a sol, and using said sol in the form of said transition metal oxide film, wherein the powder is subjected to a preliminary preparation step.

Abstract: A method produces thin films. The method includes preparing a solution containing transition metal oxide precursors, a chelating agent, and a polar organic solvent. The solution is agitated in order to form a sol. The sol is used in the form of the transition metal oxide film. The chelating agent is selected from among di- or tri-aliphatic carboxylic acids, or salts or mixtures thereof. The polar organic solvent has a boiling temperature at atmospheric pressure of less than 150° C.

Abstract: A method produces thin films. The method includes preparing a solution containing transition metal oxide precursors, a chelating agent, and a polar organic solvent. The solution is agitated to form a sol. The sol is used in the form of the transition metal oxide film. The chelating agent is selected from among di- or tri-aliphatic carboxylic acids, or salts or mixtures thereof. The polar organic solvent has a boiling temperature at atmospheric pressure of less than 150° C.

Abstract: A process for manufacturing a composite material comprising a functionalization of the substrate, which comprises treatment of said substrate with at least one first alcoholic solvent, functionalization of a first powder and formation of a first colloidal sol of said functionalized first powder in a second solvent, at least one application of a layer of said first colloidal sol of said first powder to the substrate, drying of said layer of said first colloidal sol and formation of a layer of first coating formed by said first colloidal sol, adherent to said substrate, by heating at a temperature above 50° C. and below 500° C.