The device 4, wherein the path in the shell is created in {HEAD ~ response} to {TAIL ~ the shape memory material} attaining a predetermined temperature 
The device 4 , wherein the path in the shell is created in { HEAD ~ response } to { TAIL ~ the shape memory material } attaining a predetermined temperature
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH