The invention discloses a substantially optically transparent composite structure which comprises a parent substrate, {HEAD ~ one or more intermediate layers} and {TAIL ~ a diamond} like carbon layer in which at least one of the intermediate layers has thickness in the range of about 1 micron to about 20 μm 
The invention discloses a substantially optically transparent composite structure which comprises a parent substrate , { HEAD ~ one or more intermediate layers } and { TAIL ~ a diamond } like carbon layer in which at least one of the intermediate layers has thickness in the range of about 1 micron to about 20 μm
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