Fig. 4: Supramolecular nanowires system comprising health-monitoring sensors. | Nature Communications

Fig. 4: Supramolecular nanowires system comprising health-monitoring sensors.

From: Supramolecular engineering of charge transfer in wide bandgap organic semiconductors with enhanced visible-to-NIR photoresponse

Fig. 4

a Device configuration of the transmission-based photoplethysmogram (PPG) sensor. b Photographs of the setup for the real-time heart-rate (HR) measurement based on the PTCDI-C8 nanowires vertical phototransistors. c Long-term measurement of the pulse signal measured from vertical phototransistors at resting condition.

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