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