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Figure 3


Fig. 3. Illustration of the digital particle image velocimetry (DPIV) setup used to visualize the flow field in the coronal (horizontal) plane of the robotic ribbon fin. The laser sheet was approximately 5 mm below the fin. The DPIV setup includes a charge couple device (CCD) camera to record the particle motion, a Nd:YAG laser light source, water tank and the robotic ribbon fin.