Abstract
Efficient mixing in a microfluidic system is difficult to achieve, since it is dependent solely on molecular diffusion due to low Reynolds number. In this paper, we newly propose a novel mixing technique using three-dimensional dual surface acoustic waves (3D-dSAWs) generated from two interdigitated transducers of top and bottom piezoelectric substrates. By using the 3D-dSAW, internal swirling in a single direction is induced, which can facilitate more efficient mixing of a fluorescent particle suspension and deionized water. Therefore, by using the 3D-dSAW mixer, higher efficiency mixing performance can be achieved compared to the single SAW mixer at the same flow rate and applied voltage. With the applied voltage of 14. V, 3D-dSAW mixing device could achieve 100% mixing efficiency at the flow rate of 50. μl/min, while the mixing efficiency of the traditional single SAW mixer was approximately 38%. Moreover, the throughput of 3D-dSAW mixing device could be enhanced up to 120. μl/min with the applied voltage of 18. V, at which the measured temperature was lower than 40. °C and the efficiency could reach approximately ∼95.6%.
| Original language | English |
|---|---|
| Journal | Sensors and Actuators, B: Chemical |
| DOIs | |
| Publication status | Accepted/In press - 2017 |
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Keywords
- Acoustic streaming
- Micromixer
- Surface acoustic wave
- Swirling
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Instrumentation
- Condensed Matter Physics
- Surfaces, Coatings and Films
- Metals and Alloys
- Electrical and Electronic Engineering
- Materials Chemistry
Cite this
Micromixing using swirling induced by three-dimensional dual surface acoustic waves (3D-dSAW). / Nam, Jeonghun; Lim, Chae Seung.
In: Sensors and Actuators, B: Chemical, 2017.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Micromixing using swirling induced by three-dimensional dual surface acoustic waves (3D-dSAW)
AU - Nam, Jeonghun
AU - Lim, Chae Seung
PY - 2017
Y1 - 2017
N2 - Efficient mixing in a microfluidic system is difficult to achieve, since it is dependent solely on molecular diffusion due to low Reynolds number. In this paper, we newly propose a novel mixing technique using three-dimensional dual surface acoustic waves (3D-dSAWs) generated from two interdigitated transducers of top and bottom piezoelectric substrates. By using the 3D-dSAW, internal swirling in a single direction is induced, which can facilitate more efficient mixing of a fluorescent particle suspension and deionized water. Therefore, by using the 3D-dSAW mixer, higher efficiency mixing performance can be achieved compared to the single SAW mixer at the same flow rate and applied voltage. With the applied voltage of 14. V, 3D-dSAW mixing device could achieve 100% mixing efficiency at the flow rate of 50. μl/min, while the mixing efficiency of the traditional single SAW mixer was approximately 38%. Moreover, the throughput of 3D-dSAW mixing device could be enhanced up to 120. μl/min with the applied voltage of 18. V, at which the measured temperature was lower than 40. °C and the efficiency could reach approximately ∼95.6%.
AB - Efficient mixing in a microfluidic system is difficult to achieve, since it is dependent solely on molecular diffusion due to low Reynolds number. In this paper, we newly propose a novel mixing technique using three-dimensional dual surface acoustic waves (3D-dSAWs) generated from two interdigitated transducers of top and bottom piezoelectric substrates. By using the 3D-dSAW, internal swirling in a single direction is induced, which can facilitate more efficient mixing of a fluorescent particle suspension and deionized water. Therefore, by using the 3D-dSAW mixer, higher efficiency mixing performance can be achieved compared to the single SAW mixer at the same flow rate and applied voltage. With the applied voltage of 14. V, 3D-dSAW mixing device could achieve 100% mixing efficiency at the flow rate of 50. μl/min, while the mixing efficiency of the traditional single SAW mixer was approximately 38%. Moreover, the throughput of 3D-dSAW mixing device could be enhanced up to 120. μl/min with the applied voltage of 18. V, at which the measured temperature was lower than 40. °C and the efficiency could reach approximately ∼95.6%.
KW - Acoustic streaming
KW - Micromixer
KW - Surface acoustic wave
KW - Swirling
UR - http://www.scopus.com/inward/record.url?scp=85030538957&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85030538957&partnerID=8YFLogxK
U2 - 10.1016/j.snb.2017.09.173
DO - 10.1016/j.snb.2017.09.173
M3 - Article
AN - SCOPUS:85030538957
JO - Sensors and Actuators, B: Chemical
JF - Sensors and Actuators, B: Chemical
SN - 0925-4005
ER -