Advanced Materials · 2000 · 56 citations · 0 references
EngineeringMaterials EngineeringMaterials ScienceMaterials ChemistryMicroelectromechanical SystemsSensorsChemical SensorsGas SensorsHumidity SensorsMicroelectromechanical SensorsSensor MaterialsCarbon-based Sensor MaterialsElectronic Nose SystemsElectronic NosesGas SensingGas Sensor StabilityNanostructured Gas Sensors
Electronic noses based on polymer-like carbon nitride (CNx) are investigated by these authors. The gas-sensing properties of CNx are examined, focusing on the detection of humidity and ammonia. Two basic types of gas sensor—capacitance and microelectromechanical (see Figure)—are discussed. It is found that the sensors are highly sensitive, stable, and have short response and recovery times.