{HEAD ~ The carbon nanotube film} is stretched along {TAIL ~ a second direction} substantially perpendicular with the first direction to form a deformation along the second direction 
is stretched along
{ HEAD ~ The carbon nanotube film } is stretched along { TAIL ~ a second direction } substantially perpendicular with the first direction to form a deformation along the second direction
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH