期刊
ANALYST
卷 143, 期 4, 页码 843-849出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7an01100h
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资金
- Bayerisches Staatsministerium fur Umwelt und Verbraucherschutz
- German Academic Exchange Service (DAAD)
- Center for NanoScience (CeNS)
- DFG
The selective manipulation and incubation of individual picoliter drops in high-throughput droplet based microfluidic devices still remains challenging. We used a surface acoustic wave (SAW) to induce a bubble in a 3D designed multi-trap polydimethylsiloxane (PDMS) device to manipulate multiple droplets and demonstrate the selection, incubation and on-demand release of aqueous droplets from a continuous oil flow. By controlling the position of the acoustic actuation, individual droplets are addressed and selectively released from a droplet stream of 460 drops per s. A complete trapping and releasing cycle can be as short as 70 ms and has no upper limit for incubation time. We characterize the fluidic function of the hybrid device in terms of electric power, pulse duration and acoustic path.
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