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. 2017 Jan 14;17(1):155. doi: 10.3390/s17010155

Figure 3.

Figure 3

(a) Schematic representation of the refractive index sensing element formed by the deposition of a graphene overlay onto an MZI; (b) Change in intensity of the interference vs. RI for two separate trials (diamonds and triangles) conducted one week apart. Reprinted with permission from [69].