Fig. 22: Paper-based fluorescent sensors.
From: Paper-based flexible electronic devices: processing, integration, and applications
a Schematic diagram of main procedures and mechanisms of Cys detection using fluorescent Au-Ag@ZIF-8 test paper. b, c Quenching efficiency and calibration curves of logarithmic concentrations of targeted Cys added to cell extraction (b) and human serum sample (c)209. d Numerical signals output by the sensor at different DOX/PEF/LEV concentrations210. e, f Construction of a microfluidic paper fluorescence sensor based on a smartphone sensing platform and an application diagram for predicting the concentration of omethoate191. g The mCD-μPAD aptamer sensor and portable detector simultaneously visually detect multiple antibiotics in devices with smartphones. h–j Fluorescence images of the sensor and calibration curves between Δgray values and logarithmic SMZ, OTC, and CAP concentrations in the red, green, and blue detection regions210. k Schematic diagram of preparation process of CDs-Eu@paper and CDs@paper-Eu211.
