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. 2019 Nov 27;19(23):5196. doi: 10.3390/s19235196

Figure 9.

Figure 9

Graphene oxide-based MKR relative humidity sensor [42]. Wavelength shifts of MKRs without (a) and with (b) graphene oxide as a function of relative humidity; (c) output power variations of MKRs without and with graphene oxide as a function of relative humidity. Copyright 2018, Elsevier.