Fig. 3. The photographs of glucose detection obtained by camera (a) and calibration curves of darkness density analyzed by image software Quantity One (b). Conditions: The concentrations of glucose (from the left to the right): 0, 1 × 10−3, 3 × 10−3, 5 × 10−3, 7×10−3, 9 × 10−3, 11 × 10−3 M. (For interpretation of the references to color in this
figure legend, the reader is referred to the web version of this article.)