摘要
制备了一种新型的柔性NH_(3)气体传感器。首先,将预处理后的纺织织物作为柔性衬底,在其上以喷墨打印技术及化学镀铜方法制作铜导电电极;然后,挤出打印单壁碳纳米管(SWCNTs)气体传感层。性能测试结果表明,在2 V电压作用下,传感器在通入浓度为0.4 mg/cm^(3)氨气的103.8 s内,通过电流由1.35 mA上升到1.46 mA;在撤走氨气的89.2 s内,电流下降到1.42 mA。经过弯曲测试后的传感器,在同样的电压和氨气浓度下,通入氨气的97.39 s内,电流从1.09 mA上升到1.12 mA;在撤走氨气108.57 s内,电流下降到1.0981 mA。在通入或撤走氨气后的短时间内电流变化速度很快,传感器耐弯折性较好,对一定浓度的氨气灵敏度较高。该成果对可穿戴NH_(3)气体传感器的进一步研究和发展有一定参考作用。
A novel flexible NH_(3)gas sensor is prepared.A pretreated textile fabric is used as flexible substrate,and a copper conductive electrode is fabricated by inkjet printing and electroless copper plating,and then a gas sensing layer of single-walled carbon nanotubes(SWCNTs)is extrudated and printed.Performance test results show that,in condition of 2 V voltage and NH_(3)gas concentration of 0.4 mg/cm^(3),the current of the sensor increases from 1.35 mA to 1.46 mA in 103.8 s when the NH_(3)gas is introduced,and decreases to 1.42 mA in 89.2 s when the NH_(3)gas is removed.For the sensor after bending test,the current increased from 1.09 mA to 1.12 mA for 97.39 s of NH_(3)gas and decreased to 1.0981 mA for 108.57 s of NH_(3)gas removal at the same voltage and NH_(3)gas concentration.The current changes rapidly in a short time after ammonia is introduced or removed,and the sensor has good bending resistance and high sensitivity to a certain concentration of ammonia.The results has certain reference for further research and development of wearable NH_(3)gas sensor.
作者
郭华
宋金亚
杜婧
李海霞
GUO Hua;SONG Jinya;DU Jing;LI Haixia(Shanghai Technical Institute of Electronics and Information,Shanghai 201411,China;School of Mechatronics Engineering and Automation,Shanghai University,Shanghai 200444,China;Shanghai Aerospace Intelligent Equipment Co Ltd,Shanghai 201112,China)
出处
《传感器与微系统》
CSCD
北大核心
2022年第3期39-42,共4页
Transducer and Microsystem Technologies
