File Name : fig. s1.pdf

Caption :  infrared (ir) images of the paper-based device patterned with 1% carbon-black-pdms irradiated by a 0.5 w 808-nm laser taken over 1 h. after the temperature was reached to 64 °c, temperature was maintained with minimal fluctuation.

File Name : fig. s2.pdf

Caption : comparison between the heating method. (a) and (c) shows the result of the lamp conducted with hot plate. (b) and (d) shows the result of the lamp conducted with the 808 nm laser. regardless of the heating method, only the color of the paper-based device containing e. coli o157:h7 changed pink to yellow. the error bars represent the standard deviation of the mean.