Figure 26.
Pure and doped PMMA refractive index. The samples were symbolized as NCSP0, NCSP2, NCSP4, NCSP6 and NCSP8 for PMMA with 0 wt%, PMMA with 2 wt%, PMMA with 4 wt%, PMMA with 6 wt% and PMMA with 8 wt% of CuS, correspondingly [139].
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