At CES 2022, the Gentex company unveiled a sensor composed of nanofibers capable of detecting and recognizing the signature of various chemicals, explosives, drugs, volatile organic compounds, etc. In a car, this technology could detect polluting emissions, even explosives.
This is a technology initially developed by the University of Utah (United States) which is based on the principle of drug resistance. It is in the form of a sensor which containsabout a thousand times thinner than human hair which has been specially treated with basic. These nanofibers are applied on interdigitated in order to become conductors. The voltage generates a which will flow through the nanofibers. When the latter come into contact with a chemical, charge transfers take place which cause a change in . It is this variation that generates a signal indicating the detection of a chemical. The information is sent to a microprocessor which determines the signature of the detected substance.
Trillions of unique chemical signatures
« Vaporsens’ current devices use an array of 16 nanofibers, resulting in trillions of unique chemical signatures and very high selectivity », Explains the company which also emphasizes that this sensor is satisfied with theprovided by a micro-USB port to operate.
According to Gentex, Vaporsens technology could be ready for ain L’ within four years. It would be adaptable to all types of vehicles and affordable enough to facilitate the replacement of nanofiber filters at regular intervals.