FIG. 2.

Basic functionality: sealed connection and particle mixing. (a) Bead movement inside the ARROW chip as actuated by automaton with color coded directions of forward (white) and reverse (orange) pumping; (b) corresponding fluorescence signal showing four microbeads repeatedly being moved past excitation spot; and (c) simultaneous detection of fluorescent beads and dye-labeled proteins that were mixed in automaton layer. The different laser excitation wavelengths are indicated; the HeNe laser used to excite the proteins is turned on at t = 70 s.