Radio frequency signaling system and curable composition

A radio frequency system for monitoring a condition of a cured coating, the system comprising:

• a cured coating formed from a curable coating composition;
• a sensor positioned in the cured coating, the sensor comprising circuitry forming an inductor-capacitor circuit, the circuitry having a maximum outer diameter of 10 μm-2.0 mm;
• and
• a radio frequency device configured to:
• generate and provide a radio frequency signal to the cured coating sufficient to power the circuitry of the sensor, wherein the radio frequency signal causes the circuitry to generate the electromagnetic field, such that the electromagnetic field extends from the circuitry into the cured coating;
• and
• measure a frequency response of the circuitry.

A container configured to be monitored by a radio frequency signaling system, the container comprising:

• a container body comprising an outer surface and an inner surface;
• a cured coating on the inner surface and/or the outer surface of the container body;
• and
• a sensor positioned in the cured coating configured to detect absorption of a fluid contained in the container body by the cured coating.