Initiated by a task in tunable microoptics, but not limited to this application, a microfluidic droplet array in an upright standing\nmodule with 3 Ã?â?? 3 subcells and droplet actuation via electrowetting is presented. Each subcell is filled with a single (of course\ntransparent) water droplet, serving as amovable iris, surrounded by opaque blackened decane. Each subcellmeasures 1 Ã?â??1mm2 and\nincorporates 2 Ã?â?? 2 quadratically arranged positions for the droplet. All 3 Ã?â?? 3 droplets are actuated synchronously by electrowetting\non dielectric (EWOD). The droplet speed is up to 12 mm/s at 130V (
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