Micrograph of particle separation in nano-liter droplets. 5 µm fluorescent polystyrene particles are focused to the tip of the droplets by means of acoustophoresis. The frequency for the acoustic actuation was 4 MHz, the flow rate was 4 µL/min, the droplet volume was around 12 nL and there were around 90 Particles in each droplet. We show that we can very efficiently separate particles.
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<span class="int-own-work" lang="en">Own work</span>