Figure 11: MAMs for microfluidic control.

MAMs have been recently studied for their use as valves for microfluidic devices. a) Two mechanisms that have been studied in this application are thermo-responsivity (top) and electro-responsivity (bottom). In this work, these stimulation mechanisms both work by shrinking a MAM valve that blocks the microfluidic channel, allowing fluid to pass. b) The efficacy of these valves is demonstrated through the control of flow of colored liquid, where closing and opening alternating channels results in a complete change of the color flowing through the main channel with little mixing observed. c) Alternating opening and closing of upper and lower channels twice per second demonstrates rapid response of the MAM valves, as evidenced by changing amounts of fluorescently labeled (light) and unlabeled (dark) liquid in the main channel of the device. Reproduced with permission^[120]. Copyright 2018, Springer-Nature.