A comparison of doped biopolymers using a coplanar waveguide based resonant bio-chemical sensor

This paper compares the effect of doped and un-doped biopolymers when the polymers are used as the sensing layer in a resonant chemical sensor. In addition to biopolymers, other polymers were doped as well for reference. The biopolymers used in this study were DNA-CTMA and Silk. The regular polymers used in this study were PMMA and Nafion. PMMA was doped with the metals nickel and iron. DNA-CTMA was doped with the metals manganese, nickel, and iron. Nafion and Silk were left un-doped for all of the tests. The above polymers were tested with DI water, humidity, ethanol, and isopropanol. All of the above polymers showed a resonant frequency change when subjected to the analyte of interest.