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. 2020 Apr 5;23(4):101035. doi: 10.1016/j.isci.2020.101035

Figure 12.

Figure 12

Silk PC-based Humidity Sensors

(A) Schematic of tuning the reflection peak and fluorescence intensity by PBG shift due to humidity changes. Reprinted with permission from Hu et al., 2019. Copyright 2019, John Wiley & Sons, Inc.

(B–D) Illustration of (B) coloration change and (C) reflection peaks shifts of silk PCs at various humidity levels. (D) Measurements of cyclic tensile stress and reflection peak of silk PCs in response to the humidity change. Reprinted with permission from Diao et al., 2013. Copyright 2013, John Wiley & Sons, Inc.

(E and F) Fluorescence emission (E) at different humidity levels and (F) with rapid changes in humidity for fluorescent silk PCs and the control. Reprinted with permission from Hu et al., 2019. Copyright 2019, John Wiley & Sons, Inc.