Fig. 2.
The two valve self-switching mechanism of the oscillator. (A) Alternating opening and closing of the two valves. Arrows having solid black and dotted gray lines depict the flow directions in the top and the bottom layer of the device, respectively. Note that open and close state of each valve is opposite for oscillation. (B) Measured representative pressure profiles of the two valves' top-side inlets (PT) in the oscillator. (C) Corresponding outflow rate (Qo). In (B) and (C), gray region is valve 2-open and 1-close, and the white region is the opposite.