Focused beam convection system

Author

Ristic, Cedomila ; Edwards, David A. ; Shung, K. Kirk ; Duda, J. Larry

Author_Institution

Dept. of Chem. Eng., Pennsylvania State Univ., University Park, PA, USA

fYear

1998

fDate

9-10 Apr 1998

Firstpage

91

Lastpage

93

Abstract

It was demonstrated that focusing of a high frequency ultrasound beam near a microporous membrane immersed in a colloid suspension can produce rapid fluid convection through the membrane toward the focal region. The experimental results indicate that the driving force for this mechanism is a “dynamic osmotic” pressure on the membrane caused by high agitation of colloidal particles near the ultrasound focal region. This ultrasound induced convection may be utilized in noninvasive diagnostic methods where metabolite extraction across biological membranes is needed

Keywords

biomedical equipment; biomedical ultrasonics; biomembrane transport; colloids; convection; osmosis; suspensions; ultrasonic effects; ultrasonic equipment; colloid suspension; dynamic osmotic pressure; focused beam convection system; high frequency ultrasound beam; metabolite extraction across biological membranes; microporous membrane; noninvasive diagnostic methods; rapid fluid convection; ultrasound focal region; Biomedical engineering; Biomembranes; Chemical engineering; Design for experiments; Frequency; Kirk field collapse effect; Monitoring; Polymers; Ultrasonic imaging; Ultrasonic transducers;

fLanguage

English

Publisher

ieee

Conference_Titel

Bioengineering Conference, 1998. Proceedings of the IEEE 24th Annual Northeast

Conference_Location

Hershey, PA

Print_ISBN

0-7803-4544-4

Type

conf

DOI

10.1109/NEBC.1998.664887

Filename

664887