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