【摘要】 介绍了一种基于定向纳米碳管的气敏传感器,以生长定向纳米碳管的氧化铝模板作为阳极,铝板作为阴极,利用纳米碳管的尖端发射效应,在较低的电压下使气体产生放电现象。通过对纳米碳管在气体中击穿电压和放电电流的测量,实现对气体的定性定量检测。同时纳米碳管气敏传感器还具有体积小、灵敏度高、稳定性好、响应速度快、在常温常压下即可进行检测等优点,具有较好的应用前景。更多还原

【Abstract】 A novel gas sensor based on aligned carbon nanotubes(CNTs) was developed for gas-detection at normal temperature and atmosphere pressure.Controlled direct current power supply is gradually applied between anode anode aluminum oxide(AAO) of aligned carbon nanotubes film) and cathode(Al plate),the experimental data are measured through detecting circuit,which consists of HITACHI oscilloscope and amperemeter.(Different) types of gases have particular breakdown voltages and discharge current,so it is possible to detect one gas or a gaseous mixture.The results show that carbon nanotubes gas sensor based on corona discharge is(effective),convenient,and easily prepared.The gas sensor is practical due to its particular characteristics.更多还原