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. Author manuscript; available in PMC: 2017 May 31.
Published in final edited form as: ACS Nano. 2017 Feb 1;11(2):2266–2274. doi: 10.1021/acsnano.7b00105

Figure 2.

Figure 2

Optical (left) and SEM images (middle) of the plasmonic sensors consisting of hexagonal and square array of nano-holes and their corresponding transmission spectra in differing refractive index environments (right).