The cards themselves may be arranged as independent mechanical actuators, rather tan strain transfer actuators, in which {HEAD ~ the induced strain} changes {TAIL ~ the position} of the card 
The cards themselves may be arranged as independent mechanical actuators , rather tan strain transfer actuators , in which { HEAD ~ the induced strain } changes { TAIL ~ the position } of the card
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH