**Section VII: Sol-Gel Dip Coating Method**

Chapter 11, "TiO2 Thin Films Produced by Ultrasonic-Agitation Assisted Sol-Gel for Propane Gas Sensor" by Dwight Acosta, Ismael A. Garduño-Wilches, Maria de la Luz Olvera, and Arturo Maldonado, describes TiO2 films obtained by the

**V**

dip-coating method using ultrasonic assistance during the crystal growth stage. The film thickness and work temperature are used as variables to explore the response to propane gas at different concentrations. The surface morphology is studied for different immersion cycles and the crystalline structure is analyzed by

**Alicia Esther Ares**

Facultad de Ciencias Exactas,

Posadas, Misiones, Argentina

Químicas y Naturales (FCEQyN),

Universidad Nacional de Misiones (UnaM),

Instituto de Materiales de Misiones (IMAM), Programa de Materiales y Fisicoquímica (ProMyF),

x-ray diffraction.

dip-coating method using ultrasonic assistance during the crystal growth stage. The film thickness and work temperature are used as variables to explore the response to propane gas at different concentrations. The surface morphology is studied for different immersion cycles and the crystalline structure is analyzed by x-ray diffraction.
