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. 2018 Dec 18;18(12):4489. doi: 10.3390/s18124489

Figure 1.

Figure 1

The schematic design of the geometry is as follows: nanoring-strip graphene arrays with period P = 300 nm, strip length L = 180 nm, nanoring width W1 = 30 nm, strip width W2 = 30 nm, and graphene thickness t = 1 nm. The arrays arranged in a substrate (nsub) and a sensing medium (nmed).