2010

Authors

  • Dinh Tuan Phan Dinh Tuan Phan
  • Chun Yang Chun Yang
  • Nam-Trung Nguyen Nam-Trung Nguyen

We propose a method to continuously generate droplets with programmable concentration using the ion concentration polarization (ICP) phenomenon. The concentration of a sample in continuously formed droplets can be tuned with a combition of flow rate and applied voltage. The noporous junction needed for ICP was fabricated by embedding a fion membrane inside a PDMS mixture and then self-sealed by curing it. Compared to other methods previously reported in the literature, our fabrication method has the advantages of simplicity, reliability, repeatability and low-cost. Sample droplets with up to 100-fold concentration were generated continuously with our device.