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Images showing the flow-switching capabilities of the PZT-based sorter. The flow stream (Rhodamine 6G) switches (a) to the left and (c) to the right as PZT actuator becomes positively (e.g. downward bending) and negatively biased (e.g. upward bending), respectively. During the non-ramping state (i.e. the actuation-off state), the flow stream returns (b) to the central region and exits down to the waste channel (unpublished).
