forming {TAIL ~ a second layer} of dielectric material overlying the first layer of dielectric material and the plurality of {HEAD ~ carbon nanotubes} 
forming { TAIL ~ a second layer } of dielectric material overlying the first layer of dielectric material and the plurality of { HEAD ~ carbon nanotubes }
OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD