An all-electronic, droplet-based batch microfluidic device, operated using the electrowetting on dielectric (EWOD) mechanism was developed for on-demand synthesis of acommonly used 18F-prosthetic group for biomolecule labeling.

We present a 2 cm-diameter rotary stage electrostatically actuated by ~15 V DC . Multiple rings of an ionic liquid are used as both low-friction mechanical bearings and electric connections between the rotor and the substrate. The ring-bearing device is the first that was successfully rotated by electrostatic forces among the recent rotary devices involving a liquid bearing. Compared with the recent side-driven counterpart, the bottom-driven device of this report not only reduces the actuation voltage but also enables a reliable capacitive position sensing.

No abstract