removing at least one portion of {TAIL ~ the plurality} of carbon nanotubes to expose at least one portion of the semiconductor substrate within the plurality of {HEAD ~ carbon nanotubes} 
removing at least one portion of { TAIL ~ the plurality } of carbon nanotubes to expose at least one portion of the semiconductor substrate within the plurality of { HEAD ~ carbon nanotubes }
OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD