Fig. 3
From: Mini Review on Flexible and Wearable Electronics for Monitoring Human Health Information
a Schematic of the mechanism of the sensor with hollow-sphere structure induced by sunflower pollen microcapsules under pressure. b Transient response of SFP-based composite film (CF) and planar CF under 600Pa pressure. c Relaxation time of the two related sensors. d Stability test of SFP-based CF at 80 Pa. Adapted with permission from ref. 3. Copyright 2017 Elsevier. e The SEM image of the converted carbon paper. f, g Monitoring the breath (f) and gesture (g) of an adult by the CP/PDMS sensor. Adapted with permission from ref. 63. Copyright 2017 American Chemical Society