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Evaporation management in digital microfluidic devices

  • US 10,695,762 B2
  • Filed: 06/06/2016
  • Issued: 06/30/2020
  • Est. Priority Date: 06/05/2015
  • Status: Active Grant
First Claim
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1. A method of replenishing a reaction droplet on an air-matrix digital microfluidic (DMF) apparatus to correct for evaporation, the method comprising:

  • monitoring a reaction droplet in an air gap region of the air-matrix DMF apparatus to determine when a volume of the reaction droplet falls below a threshold, wherein the reaction droplet comprises a solvent and reaction reagents;

    introducing a replenishing droplet from an aperture through one of two plates of the air-matrix DMF apparatus forming the air gap region, wherein the replenishing droplet consists of solvent; and

    combining the replenishing droplet with the reaction droplet after the volume of the reaction droplet falls beneath the threshold.

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