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

fYear

2013

fDate

21-25 July 2013

Firstpage

2122

Lastpage

2125

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium (IUS), 2013 IEEE International

Conference_Location

Prague

ISSN

1948-5719

Print_ISBN

978-1-4673-5684-8

Type

conf

DOI

10.1109/ULTSYM.2013.0542

Filename

6724978