Phononic fluidics: acoustically activated droplet manipulations
Phononic fluidics: acoustically activated droplet manipulations
复制标题
声子流体学：声学激活液滴操纵
DOI：
10.1117/12.879148
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发表时间：
2011
期刊：
影响因子：
--
通讯作者：
Reboud J
中科院分区：
文献类型：
--
作者：
Reboud J
Microfluidic systems have faced challenges in handling real samples and the chip interconnection to other instruments. Here we present a simple interface, where surface acoustic waves (SAWs) from a piezoelectric device are coupled into a disposable acoustically responsive microfluidic chip. By manipulating droplets, SAW technologies have already shown their potential in microfluidics, but it has been limited by the need to rely upon mixed signal generation at multiple interdigitated electrode transducers (IDTs) and the problematic resulting reflections, to allow complex fluid operations. Here, a silicon chip was patterned with phononic structures, engineering the acoustic field by using a full band-gap. It was simply coupled to a piezoelectric LiNbO3 wafer, propagating the SAW, via a thin film of water. Contrary to the use of unstructured superstrates, phononic metamaterials allowed precise spatial control of the acoustic energy and hence its interaction with the liquids placed on the surface of the chip, as demonstrated by simulations. We further show that the acoustic frequency influences the interaction between the SAW and the phononic lattice, providing a route to programme complex fluidic manipulation onto the disposable chip. The centrifugation of cells from a blood sample is presented as a more practical demonstration of the potential of phononic crystals to realize diagnostic systems.
通过表面声波雾化进行药物输送的微气溶胶和纳米颗粒合成
DOI：
--
发表时间：
2007
期刊：
影响因子：
--
作者：
M. Alvarez;J. Friend;L. Yeo;D. R. Arifin
通讯作者：
D. R. Arifin
平面流体学：可编程生物芯片的新途径
DOI：
--
发表时间：
2003
期刊：
SPIE MOEMS-MEMS
影响因子：
--
作者：
A. Wixforth;C. Gauer;J. Scriba;M. Wassermeier;R. Kirchner
通讯作者：
R. Kirchner
声学中的表面波
DOI：
--
发表时间：
1973
期刊：
影响因子：
--
作者：
H. Überall
通讯作者：
H. Überall