The oxide layer 22 has {TAIL ~ a thickness}, for example, in a range of 1000 angstroms to {HEAD ~ 8000 angstroms} 
The oxide layer 22 has { TAIL ~ a thickness } , for example , in a range of 1000 angstroms to { HEAD ~ 8000 angstroms }
OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD