Title :
Precipitation method for nano particle using focused ultrasound
Author :
Jungsoon Kim ; Moojoon Kim ; Seonae Hwangbo ; Mincheol Chu ; Kanglyeol Ha
Author_Institution :
Dept. of Media Eng., Tongmyong Univ., Busan, South Korea
Abstract :
An effective ultrasonic precipitation method for the recycle and collection of the nano particles is suggested. We designed a cylindrical piezoelectric transducer to precipitate nano particles effectively. The suspension of TiO2 was circulated through the center of a cylindrical piezoelectric transducer to receive the ultrasonic energy uniformly. The ultrasound from the transducer is focused in the glass tube where the suspension flows. The nano particles started to precipitate 40 minutes after 50 hour-ultrasound irradiation. To compare with other ultrasonic methods such as ultrasonic bath and ultrasonic homogenizer, the precipitated states from each method after ultrasound irradiation were observed. As the result, the suspension irradiated by focused ultrasound showed the best precipitation within the shortest time.
Keywords :
nanofabrication; nanoparticles; piezoelectric transducers; precipitation; recycling; shock waves; suspensions; titanium compounds; ultrasonic transducers; TiO2; cylindrical piezoelectric transducer; design; effective ultrasonic precipitation; focused ultrasound; glass tube; nanoparticle collection; nanoparticle recycling; shock wave; time 40 min; time 50 hour; titanium oxide suspension; ultrasonic bath; ultrasonic energy; ultrasonic homogenizer; ultrasonic method; ultrasound irradiation; ultrasound transducer; Acoustics; Glass; Piezoelectric transducers; Shock waves; Suspensions; Ultrasonic imaging; TiO2; focused ultrasound; nano particle; precipitation; ultrasonic bath; ultrasonic homogenizer;
Conference_Titel :
Ultrasonics Symposium (IUS), 2013 IEEE International
Conference_Location :
Prague
Print_ISBN :
978-1-4673-5684-8
DOI :
10.1109/ULTSYM.2013.0542
