In {TAIL ~ a method} for making a GaN article, an epitaxial nitride layer is deposited on {HEAD ~ a single crystal substrate} 
In { TAIL ~ a method } for making a GaN article , an epitaxial nitride layer is deposited on { HEAD ~ a single crystal substrate }
OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD