Biodegradable hybrid silicon polymer sensor for post operative monitoring

A sensor system for postoperative monitoring, comprising:

• a biodegradable substrate;
• an electrode structure disposed on the biodegradable substrate, the electrode structure forming a resonant circuit comprising an inductive element and a capacitive element, wherein the capacitive element comprises a first interdigitated capacitor and a second interdigitated capacitor positioned on opposite sides of a radiation gap of the inductive element;
• a passivation layer disposed over the electrode structure;
• and
• a sensing film disposed over the passivation layer, wherein the sensing film is configured to degrade in response to a physiological parameter, and wherein degradation of the sensing film alters a capacitance of the capacitive element to produce a detectable shift in a resonance frequency of the resonant circuit.

A method of fabricating a biodegradable sensor, comprising:

• providing a substrate;
• depositing an electrode layer on the substrate, wherein the electrode layer comprises a split-ring resonator and at least one interdigitated capacitor connected in series with the split-ring resonator;
• depositing a passivation layer over the electrode layer;
• and
• depositing a sensing film over the passivation layer, wherein the sensing film is configured to change in thickness in response to an analyte of interest.