Fig. 3From: Facile fabrication of silver-nanowire-based chips using dry-film photoresist for wearable optical detectionAFM tomography of AgNWs/PET chips a before and b after incubation in a Mb aqueous solution. c, d SERS detection with AgNWs/PET chips. c SERS spectra of Mb solutions with concentrations ranging from 10−8 M to 10–5 M (black, naked chip; violet, 10–8 M; green, 10–7 M; blue, 10−6 M; red, 10–5 M). d Correlation between the 756 cm−1 band area and protein concentration (error bars represent the standard deviation)Back to article page