Nanostructure-based cannabinoid sensor

A device for detection of a cannabinoid in a sample, which is a sample of a bodily fluid or a sample of breath, comprising:

• a sensor comprising a substrate, a sensor medium on the substrate, a first conductive terminal in electrical connection with the sensor medium and a second conductive terminal in electrical connection with the sensor medium, the second conductive terminal being spaced from the first conductive terminal, the sensor medium comprising carbon nanostructures comprising holey reduced graphene oxide, wherein at least one property of the sensor medium is dependent upon the presence of the cannabinoid on a surface of the sensor medium, and
• electronic circuitry comprising at least one measurement system in operative connection with the sensor to measure a variable relatable to the at least one property of the sensor medium dependent upon the presence of the cannabinoid wherein the at least one measurement system is configured to determine a concentration of the cannabinoid based upon a measured value of the variable.

A method of detecting a cannabinoid in a sample, which is a sample of a bodily fluid or a sample of breath, comprising:

• applying the sample to a sensor medium of a sensor, the sensor medium being positioned on a substrate of the sensor, the sensor medium comprising at least one nanostructure, wherein at least one property of the sensor medium is dependent upon the presence of the cannabinoid on a surface of the sensor medium, the sensor medium being configured for direct contact of the sample therewith, and the sensor medium being configured to respond to a presence of the cannabinoid in a concentration arising from the use of a cannabinoid-containing substance by a person from whom the sample is taken;
• and;
• measuring a variable relatable to the at least one property of the sensor medium which is dependent upon the presence of the cannabinoid.

A sensor for detection of a cannabinoid in a sample, comprising:

• a substrate and a sensor medium positioned on the substrate, the sensor medium comprising at least one nanostructure having a functional material comprising at least one biological moiety which interacts with the cannabinoid deposited on the at least one nanostructure, wherein at least one property of the sensor medium is dependent upon the presence of the cannabinoid on a surface of the sensor medium resulting from contact of the sample with the surface of the sensor medium to detect the cannabinoid at a concentration present in a sample of breath or a sample of bodily fluid arising from the use of a cannabinoid-containing substance by a person from whom the sample of breath or the sample of bodily fluid is taken.