Fig.3 (IMAGE)
Caption
Device demonstrations using the nanopaper semiconductor. (a) Wearable sensor for monitoring human exhalation-derived water vapor leaked from facial masks. Washable mask: Sensor response pulses corresponding to respiration were observed, indicating a water vapor leak from the washable mask. Surgical mask: Only a gradual decrease in sensor resistance was observed, indicating the effective water vapor capture of the surgical mask. (b) Glucose biofuel cell for energy generation. The nanopaper semiconductor demonstrated a power density 14 times higher than that of a commercial graphite sheet, and led to illumination of a red LED.
Credit
2022 Koga et al. Nanocellulose paper semiconductor with a 3D network structure and its nano−micro−macro trans-scale design. ACS Nano
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License
CC BY