Droplet actuator devices and methods employing magnetic beads

摘要

A droplet actuator device comprises magnet sets and electrode sets, wherein: each electrode set comprises one or more electrodes associated with a substrate. Two or more electrode sets are arranged to form an array of electrodes; and configured for conducting one or more droplet operations. Each magnet set comprises one or more magnets. Each magnet set is arranged in a relationship with an electrode set such that magnetic field(s) exerted by the magnet set restrict mobility of magnetically responsive particles to a locus which is proximate to the electrode set. Each magnet set is arranged in relationship to its adjacent magnet set(s), which relationship a polar opposite to the polar orientation of the adjacent magnet set.