Use of Ultrasonic Spray-Pyrolysis Process: A Brief Review (pp. 47-72)
Authors: (L. Castañeda, Instituto de Física, Benemérita Universidad Autónoma de Puebla, Puebla, México)
Abstract: Ultrasonic spray-pyrolysis process has been utilized for the past forty years with
great convenience for materials processing, especially for the fabrication of metal oxide
thin films of semiconducting nature. The process renders several advantages associated to
the adhesion, control of morphology, particle size, and homogeneity of thin films, apart
from its low cost.
In this brief review, we present a short description of ultrasonic nebulization process
of liquid through ultrasonic wave induced cavitation. Effects of different parameters like
the ultrasound frequency, ultrasonic power, and fluid level in the atomization chamber on
the nebulization rate of a liquid solvent of precursor have been discussed.