It can also create {TAIL ~ a quantum wire superlattice} by sandwiching {HEAD ~ a thin CTSL layer} between two wider band gap layers 
It can also create { TAIL ~ a quantum wire superlattice } by sandwiching { HEAD ~ a thin CTSL layer } between two wider band gap layers
OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH