Use of utrasonic spray-pyrolysis process: A brief revew

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.