基于打印聚合物薄膜技术的NH_3传感器  

Polymer NH_3 sensor based on printing technology

作　　者：王聪[1] 纪新明[1] 周嘉[1] 包宗明[1] 黄宜平[1] 

机构地区：[1]复旦大学微电子系ASIC与系统国家重点实验室,上海200433

出　　处：《传感器与微系统》2011年第2期77-80,共4页Transducer and Microsystem Technologies

摘　　要：研究了一种新型的采用打印技术的NH3传感器,探讨了打印"墨水"材料聚苯胺和聚吡咯的制备和"墨水"掺酸比例对NH3传感器敏感度的影响。为了提高传感器灵敏度,分别对传感器的直流和交流阻抗特性进行了研究。结果发现在1.5 kHz左右交流阻抗的测试条件下,传感器灵敏度要较直流阻抗测试高近1个数量级。此外还通过构建1个交流阻抗拟合模型对传感器交流阻抗变化过程作了解释。研究的采用打印技术基于聚合物的NH3传感器具有成本低,可以制作在柔性衬底上和适合大规模生产等特点,在食品加工、养殖业和医疗等领域具有广泛的应用前景。A novel NH3 sensor by using printing technology is proposed. The preparation of ink and the effect of the ratio of acid in polymer to NH3 sensor have been discussed. In order to improve the sensitivity, DC/AC impedance changes with the NH3 concentration is examined and it shows that sensitivity of the sensor is about one order higher than DC impedance at 1.5 kHz AC impedance. Additionally, an equivalent circuit model is developed to explain AC impedance spectrum. Owing to the low-cost, high volume production process and producible onto a flexible substrate, NH3 sensor based on polymer by using printing technology has a promising prospect in food processing, aquaeuhure and medical industry, etc.

关 键 词：打印 气体传感器 聚合物 氨气 电化学阻抗 

分 类 号：TP212.2[自动化与计算机技术—检测技术与自动化装置]