Figure 6.

Promising applications of flexible optical biosensors: (a) POCT devices: schematic illustrations of smartphone-integrated, microfluidic channel-integrated, and miniaturized optical components-integrated LSPR platforms. Adapted with permission from [121]. Copyright (2017) John Wiley and Sons. (b) Wearable sensors: Schematic illustration of plasmonic thermo-responsive microgels under swollen and shrunk states with inset images of the sensor arrays attached to neck and hand. Adapted from [124] Copyright (2018) with permission from Springer Nature. (c) Food quality monitoring: Schematic representation of a SERS-based flexible biosensor for the monitoring of pesticide residues on vegetables and fruits. Adapted from [125], Copyright (2017) with permission from American Chemical Society.