Chemical compounds (e.g., lactic acid, ketones, PAH, heavy metals and many others) and chemical signals (e.g., pH, ion concentration) are directly detected by our sensors in solutions or in gaseous mixtures.
To sense them, the gate of the transistor is functionalized using proprietary techniques.
Different strategies can be used for the detection of biological molecules:
In some cases, specific antibodies/receptors are grafted to the transistor. In the presence of the target molecule, the biorecognition is transduced to an electrical signal. Examples include the detection of inflammatory biomarkers, allergens (e.g. gluten) or new synthetic drugs.
In other cases the molecule is directly detected by the sensor. This applies to, e.g., stress-related molecules, such as adrenaline, or environmental pollutants.
Bioelectrical potentials are measured with unprecedented sensitivity and immunity to noise because of impedance reduction. This is achieved through conductive polymers ad hoc designed in our laboratories.