Resonant gas sensor

A sensor system configured to detect an analyte, comprising:

• a substrate;
• and
• a resonant circuit configured to be removed without requiring replacement of the substrate, the resonant circuit disposed on the substrate and comprising:
• an antenna disposed on the substrate;
• a sensing material disposed on the substrate and electrically coupled to the antenna, the sensing material comprising:
• a carbon structure including a multi-modal distribution of pore sizes that define a surface area including bonding sites configured to interact with one or more additives and the analyte, the carbon structure configured to generate a resonant signal indicative of one or more characteristics of the analyte in response to an electromagnetic signal, the carbon structure comprising:
• a plurality of distinctly sized interconnected channels defined by the surface area and configured to be infiltrated by the analyte;
• and
• a plurality of exposed surfaces configured to adsorb the analyte.

A method for detecting an analyte in a sensing material defined by a carbon structure including a plurality of distinctly sized interconnected channels, the method comprising:

• receiving the analyte through the one or more distinctly sized interconnected channels into the carbon structure;
• receiving at least one electromagnetic signal configured to oscillate over a range of frequencies;
• and
• identifying the analyte based on a resonant signal of the carbon structure responsive to the at least one electromagnetic signal, wherein a frequency of a peak in the resonant signal induced by dithering the at least one electromagnetic signal is indicative of a presence of the analyte in the sensing material.