Finally, logic causes control apparatus to include and not include respective ones of the materials within the beam in a pre established pattern of {HEAD ~ time periods} which will cause {TAIL ~ the materials} to be deposited on the steps in a series of stacked monolayers 
Finally , logic causes control apparatus to include and not include respective ones of the materials within the beam in a pre established pattern of { HEAD ~ time periods } which will cause { TAIL ~ the materials } to be deposited on the steps in a series of stacked monolayers
OTH OTH OTH 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 OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH