| http://www.w3.org/ns/prov#value | - The nickel ???master??? plate is then used to emboss directly into a plastic film, such as vinyl, that has been softened by heating or solvent. [0165] The theory describing the design and fabrication of three-dimensional phase-quantized terraced surface relief pattern that resemble stepped pyramids is described: Cowen, ???Aztec surface-relief volume diffractive structure,??? J. Opt.
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