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3D-printed prisms with plasmonic Au surfaces. (a) Equilateral prism just-printed (left), after polishing (middle), and after Au deposition (right). (b) SPR sensing scheme with cholera toxin and GM1 and (c) corresponding SPR sensorgram. (d) Dove prism used in single-axis SPR configuration and (e) AuNP growth on dove prism. (Reprinted with permission from ref 92 Copyright 2017 American Chemical Society).
