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. 2022 Dec 2;10:1070855. doi: 10.3389/fbioe.2022.1070855

FIGURE 4.

FIGURE 4

(A) Photograph of the fully integrated wearable humidity sensor, (B) Photograph of App-assisted smartphone as a wireless receptor, (C) Photograph of humidity sensor connected by conductive silver paste between wire and LCP-copper interdigital electrode, (D) Photograph of the device attached under a volutteer’s nose, (E) The device can distinguish different respiration patterns.