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. Author manuscript; available in PMC: 2018 Dec 5.
Published in final edited form as: Anal Chem. 2017 Nov 22;89(23):12626–12630. doi: 10.1021/acs.analchem.7b03967

Figure 1.

Figure 1

Characterization of 3D printed optics. (A) Fabrication scheme for 3D printed surface plasmon resonance sensors. Each prism face measures 20 mm × 20 mm. (B) Scanning electron and atomic force microscopic characterizations of the surface before and after polishing treatment. (C) Ellipsometry results, depicting wavelength dependence of refractive index (n) and extinction coefficient (k) for the printed resin. Solid line depicts the Sellmeier fit for n. (D) FT-IR spectra of the cured resin and two different molecular weight PMMAs for standard comparisons.