Fig. 7: PCA plots and responses to real beverages of the three types of SFETs. | npj 2D Materials and Applications

Fig. 7: PCA plots and responses to real beverages of the three types of SFETs.

From: Surface-tailored graphene channels

Fig. 7

PCA plots and response comparison a, d pristine graphene, b, e Nafion-coated graphene, and c, f Au-decorated graphene, respectively, to four real beverages (orange juice, original coke, Sprite, and zero coke).

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