Abstract: A detection system for an aircraft that includes at least one chemical sensor or an array of nanofiber chemical sensors for sensing an airborne material. The chemical sensor has an electrical characteristic that changes in the presence of the airborne material. The system further includes a processor coupled to the chemical sensor. The processor monitors electrical characteristic of the chemical sensor and generates a detection signal in response to a change in the electrical characteristic.

Abstract: A system for low power chemical sensing can include a voltage shift unit which receives a voltage signal from a chemical sensor unit. The voltage signal can be determined by a concentration of an analyte. The voltage shift unit can transform the voltage signal to an input voltage signal, and send the input voltage signal to a plurality of frequency selective surface (FSS) units of an FSS array. The FSS array can communicate a radio frequency (RF) signal in an Institute of Electrical and Electronics Engineers (IEEE) S band with a resonant frequency based on the input voltage to provide the concentration of the analyte.

Abstract: An air quality system for a vehicle includes a chemical detection apparatus including a plurality of nanofiber chemical sensors for sensing a plurality of airborne materials in a compartment of the vehicle. The plurality of nanofiber chemical sensors are configured to adjust a characteristic electrical signal in response to changes in the presence of the plurality of airborne materials. The chemical detection apparatus further includes a processor coupled to the nanofiber chemical sensor, wherein the processor is configured to monitor the characteristic electrical signals from the nanofiber chemical sensors and generate a detection signal in response to a change in the characteristic electrical signals. The processor is in communication with a controller configured to control at least one vehicle system in response to the detection of one or more of the airborne materials.

Abstract: A detection system includes at least one sensor configured to measure a presence of airborne particles and at least one amplifier circuit in communication with the at least one sensor. The amplifier circuit is configured to monitor a charge generated by the at least one sensor over a time interval. The system further includes a controller configured to monitor the charge accumulated in the at least one amplifier circuit from the at least one sensor at the time interval. In response to the charge of the at least one amplifier circuit, the controller detects the presence of the airborne particles.

Abstract: A tactical chemical detector may include a light array comprising a plurality of light sources; a sensor optic comprising a plurality of optic elements, each optic element in optical communication with one of the plurality of light sources; a sensor array comprising a plurality of sensors arranged on a substrate, each sensor in optical communication with one of the plurality of light sources and wherein at least one vent opening extends through the substrate; a power source configured to selectively provide power the light array and the sensor array; and a housing having a first side and a second side and enclosing the light array, the sensor optic, the sensor array, and the power source.

Abstract: A detection system for an aircraft that includes at least one chemical sensor or an array of nanofiber chemical sensors for sensing an airborne material. The chemical sensor has an electrical characteristic that changes in the presence of the airborne material. The system further includes a processor coupled to the chemical sensor. The processor monitors electrical characteristic of the chemical sensor and generates a detection signal in response to a change in the electrical characteristic.

Abstract: A tactical chemical detector may include a light array comprising a plurality of light sources; a sensor optic comprising a plurality of optic elements, each optic element in optical communication with one of the plurality of light sources; a sensor array comprising a plurality of sensors arranged on a substrate, each sensor in optical communication with one of the plurality of light sources and wherein at least one vent opening extends through the substrate; a power source configured to selectively provide power the light array and the sensor array; and a housing having a first side and a second side and enclosing the light array, the sensor optic, the sensor array, and the power source.

Abstract: A system for low power chemical sensing can include a voltage shift unit which receives a voltage signal from a chemical sensor unit. The voltage signal can be determined by a concentration of an analyte. The voltage shift unit can transform the voltage signal to an input voltage signal, and send the input voltage signal to a plurality of frequency selective surface (FSS) units of an FSS array. The FSS array can communicate a radio frequency (RF) signal in an Institute of Electrical and Electronics Engineers (IEEE) S band with a resonant frequency based on the input voltage to provide the concentration of the analyte.

Abstract: A chemical sensing field effect transistor device is disclosed. The device can include a control gate structure interfacing a control side of a semiconductor channel region, a source region, and a drain region. The control gate structure can comprise a control gate dielectric and a control gate electrode. The device can include a sensing gate structure interfacing the semiconductor channel region, the source region, and the drain region at a sensing side of the semiconductor channel region opposite the control gate structure. The sensing gate structure can comprise a sensing gate dielectric, and a sensing gate electrode. The device can include a functional layer interfacing the sensing gate electrode opposite the sensing gate dielectric. The functional layer can have an exposed interface surface. The functional layer can be capable of binding with a target analyte material sufficient to create a measurable change in conductivity across the semiconductor channel region.

Abstract: A chemical sensing field effect transistor device is disclosed. The device can include a control gate structure interfacing a control side of a semiconductor channel region, a source region, and a drain region. The control gate structure can comprise a control gate dielectric and a control gate electrode. The device can include a sensing gate structure interfacing the semiconductor channel region, the source region, and the drain region at a sensing side of the semiconductor channel region opposite the control gate structure. The sensing gate structure can comprise a sensing gate dielectric, and a sensing gate electrode. The device can include a functional layer interfacing the sensing gate electrode opposite the sensing gate dielectric. The functional layer can have an exposed interface surface. The functional layer can be capable of binding with a target analyte material sufficient to create a measurable change in conductivity across the semiconductor channel region.