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. Author manuscript; available in PMC: 2019 Jul 1.
Published in final edited form as: Adv Healthc Mater. 2018 Jun 25;7(14):e1701290. doi: 10.1002/adhm.201701290

Figure 1.

Figure 1.

Matrix substrates and standard culture conditions do not affect the quality of graphene. A) Assembly schematics for graphene-integrated devices. Glass coverslips were coated with laminin or PDL. Graphene was then placed on top of laminin or PDL coating. RGCs were plated directly on top of graphene. B) (top panel) Representative fluorescent micrographs of RGCs cultured graphene alone (left), laminin (middle), or PDL (right) with graphene overlay. RGCs were labeled with CTB conjugated to Alexa Fluor-488 (green). (B) (second panel) Quality of the graphene alone, or on laminin or PDL, was assessed by Raman spectra and (B) (third panel) intensity ratio mapping of 2D and G peaks. Scale bar = 10 μm; Images taken at 40×.