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