Fig. 5From: Wrinkle Structured Network of Silver-Coated Carbon Nanotubes for Wearable SensorsPortable breathing detector based on Ag@OH-f MWCNT soft strain sensor with wrinkled structure. a Breathing in and (b) breathing out. Pictures of the (c) top and (d) bottom sight from the portable breathing detector. e Facial, (f) frown, and (g) smile expression recognition of blinkBack to article page