In the preferred embodiment of the invention, the thickness of at least one interlayer is in {TAIL ~ the range} of about 1 μm to 20 μm and the total thickness for each of {HEAD ~ the other interlayers} is at least 10 Å 
In the preferred embodiment of the invention , the thickness of at least one interlayer is in { TAIL ~ the range } of about 1 μm to 20 μm and the total thickness for each of { HEAD ~ the other interlayers } is at least 10 Å
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH