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RFID coils are commonly used electronic devices that interact with incoming electromagnetic waves in a way that modifies the output signal. Each coil system has distinctive modulation patterns depending on the overall geometric structure and material properties of the coil. Researchers have previously demonstrated that RFID coil systems can be repurposed as sensor systems by monitoring the change ... read morein the coil_�_s signal output as a result of changing environmental conditions (Saremi-Yarahmadi, Murphy, & Toumazou, 2010), (Tao, et al., 2011). However, these systems lack the ability to differentiate any individual variety from another and this lack of specificity hugely decreases their potential functionality. In this dissertation, experiments were conducted to examine the potential of enzyme functionalized silk films as a substrate for RFID coil sensor systems to increase the specificity of detection. It was determined that by locally containing a glucose oxidase solution in direct contact with sensing RFID coils that the concentration of glucose could be successfully detected by monitoring the gradual change in the magnitude of S11 reflection log mag response over time when directly compared to the concentration of fructose solutions. Additionally fabrication methods were determined to generate consistent RFID coils on silk. These combined results suggest the potential for a wide range of enzyme doped silk film sensor systems capable of monitoring the concentration of a wide range of molecules in solution.
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