AS PLASTIC ANALYTICAL SENSORS

摘要

Despite the wide range of chemical sensor technology available,implementing a sensitive,selective,reliable,and inexpensive handheld or household system for detecting volatile analytes is still a challenge.For example,the sensors for combustible gas alarms mounted in most homes are metal-oxide-based chemiresistors that are stable but not very selective.Moreover,they need to be operated at high temperatures.The use of organic active layers,such as conducting polymers(CPs),instead of metal-oxide sensors can greatly enhance chemical selectivity and lower power consumption,although reliability is still an issue.