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