ToF-SIMS and AFM Characterization of Brown Cosmetic Contact Lenses: From Structural Analysis to the Identification of Pigments

<div>Optical images of the analysis area and ToF-SIMS 2D image mapping on the front surface of the colored part. (a) Overlay image of Cu<sup>+</sup> and PHEMA for CCL-B. (b) Cl<sup>−</sup> mapping images normalized by total intensity for lenses CCL-A, CCL-B, and CCL-C.</div>

Journal of Analytical Methods in Chemistry

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Figure 5

Figure 5: ToF-SIMS and AFM Characterization of Brown Cosmetic Contact Lenses: From Structural Analysis to the Identification of Pigments 