README

This data repository contains information described in the following paper:

N. W. Xu, J. P. Townsend, J. H. Costello, S. P. Colin, B. J. Gemmell, J. O. Dabiri. (2020). Field testing of biohybrid robotic jellyfish to demonstrate enhanced swimming speeds. Biomimetics, 5(4), 64. https://doi.org/10.3390/biomimetics5040064

%%

Field Videos

%%

MP4 videos, taken at 30 fps, for field experiments to test swimming speeds of biohybrid robotic jellyfish (Aurelia aurita + microelectronic swim controller). 

Videos are labeled with '#_jellyfish_frequency,' indicating the order of videos (#), jellyfish (J1 is animal 1, etc.), and frequency (0.50 Hz, 0.75 Hz, 1.00 Hz, and ctl is an inactive swim controller at 0 Hz). Videos of animals 1 and 2 were taken on 2019_08_09, and were used to calculate trajectories shown in the paper. Videos of animals 3 and 4 were taken on 2019_08_12.

%%

Processed Data

%%

MAT files contain the vertical positions of the jellyfish swimming upward. File names are ascribed similarly as above, with the additional '_vertdisps' ("#_jellyfish_frequency_vertdisps'). Each file contains the vertical position over time. Columns correspond to vertical positions of the jellyfish with respect to the red rope markers, the associated errors after propagation (assuming pixel-level accuracy in calculating centroids and using the distance between subsequent rope markers as a known value, 30.5 cm), vertical positions of the jellyfish with respect to the yellow rope markers, and the associated errors after propagation (assuming pixel-level accuracy in calculating centroids and using the distance between subsequent rope markers as a known value, 30.5 cm). Time steps are 30 fps.

%%

Hydrodynamic Model

%%

'model.m' contains a hydrodynamic model of jetting jellyfish swimming.