2012
DOI: 10.1063/1.4711101
|View full text |Cite
|
Sign up to set email alerts
|

Acousto-microfluidics: Transporting microbubble and microparticle arrays in acoustic traps using surface acoustic waves

Abstract: We demonstrate that aqueous suspensions of microbubbles, formed into arrays using standing surface acoustic waves (SSAWs), can be transported by controlled modulation of the SSAW frequency. The array is repeatedly captured at a sequence of spatial positions along the acoustic beam path and long-range transportation is achieved by periodic cycling of the applied frequency across the transducer bandwidth. We also demonstrate that controllable alignment and transport can be achieved in a detachable microfluidic d… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
3
1
1

Citation Types

0
19
0

Year Published

2012
2012
2021
2021

Publication Types

Select...
9

Relationship

0
9

Authors

Journals

citations
Cited by 29 publications
(19 citation statements)
references
References 39 publications
0
19
0
Order By: Relevance
“…1(a)) was applied to match the impedance between the power amplifier and the FPCB-SAW device. The use of the matching network is essential for the device as it minimizes the reflection of the RF power [19] to allow the power amplifier work safely and improve the conversion of SAWs. A vector network analyzer (VNA, E5061B ENA, Keysight, USA) was used to measure the reflection coefficient S11 of the device with and without the matching network.…”
Section: B Device Characterizationmentioning
confidence: 99%
“…1(a)) was applied to match the impedance between the power amplifier and the FPCB-SAW device. The use of the matching network is essential for the device as it minimizes the reflection of the RF power [19] to allow the power amplifier work safely and improve the conversion of SAWs. A vector network analyzer (VNA, E5061B ENA, Keysight, USA) was used to measure the reflection coefficient S11 of the device with and without the matching network.…”
Section: B Device Characterizationmentioning
confidence: 99%
“…This really only works if the reflection at the channel walls is weak, as the standing wave across the channel defined by the width of the fluid channel will interfere with the ability to perform phase shift manipulation. Such phase shifting was employed to alter the positions of the particle alignment (Meng et al 2011, Orloff et al 2011, which is useful for the downstream separation of particle species (see below) and marching single cells and bubbles in one and two dimensions (Meng et al 2011(Meng et al , 2012O'Rorke et al 2012). The ease of varying the phase using voltage control makes it particularly attractive in microfluidic systems for particle manipulation.…”
Section: Vibrationmentioning
confidence: 99%
“…Surface acoustic waves (SAWs) are widely used for non-contact micromanipulation of particles in microuidic systems as they can generate force gradients on length scales similar to the particles. [1][2][3][4][5][6][7][8][9][10] When placed beneath a microuidic channel, the displacement of a SAW generates a pressure wave in the liquid. The attenuation of this pressure wave in the liquid causes acoustic streaming that can act on suspended particles via a drag force, as well as acoustic radiation forces (ARFs) which direct suspended particles along time-averaged pressure gradients.…”
Section: Introductionmentioning
confidence: 99%