Micro blender and separator using inner-vortex of droplet induced by surface acoustic wave

Author

Sano, T. ; Onuk, T. ; Hamate, Y. ; Hojo, M. ; Nagasawa, S. ; Kuwano, H.

Author_Institution

Dept. of Nanomech., Tohoku Univ., Sendai, Japan

fYear

2009

fDate

21-25 June 2009

Firstpage

370

Lastpage

373

Abstract

We report on a micro vortex in a droplet induced by surface acoustic wave acoustic streaming (SAW-AS), which is applicable as a stirrer in micro fluidic devices. Fine controllability of the flow rate in a micro vortex was revealed using two flow-tracking methods with colored aqueous fluids, or scattering laser beams by distributed particles. We performed two practical tasks of a micro stirrer as an on-chip blender and as a separator. Demonstrations results with a small concentrated blood specimen are also shown.

Keywords

acoustic streaming; biological techniques; drops; flow control; flow visualisation; lab-on-a-chip; microfluidics; mixing; surface acoustic waves; vortices; SAW acoustic streaming; SAW induced droplet inner vortex; SAW-AS; blood specimen; colored aqueous fluids; droplet microvortex; flow rate controllability; flow tracking methods; laser beam scattering; microblender; microfluidic device stirrer; microseparator; microstirrer; on chip blender; on chip separator; surface acoustic wave; Acoustic devices; Acoustic scattering; Acoustic waves; Controllability; Fluidic microsystems; Microfluidics; Particle scattering; Particle separators; Surface acoustic wave devices; Surface acoustic waves; SAWstreaming; microfluidics; on-chip mixing; surface acoustic wave; vortex;

fLanguage

English

Publisher

ieee

Conference_Titel

Solid-State Sensors, Actuators and Microsystems Conference, 2009. TRANSDUCERS 2009. International

Conference_Location

Denver, CO

Print_ISBN

978-1-4244-4190-7

Electronic_ISBN

978-1-4244-4193-8

Type

conf

DOI

10.1109/SENSOR.2009.5285487

Filename

5285487