|本期目录/Table of Contents|

 Dielectric Loss Model of Humidity Sensor Based on Multi-Wall Carbon Nanotubes(PDF)

《纳米技术与精密工程》[ISSN:1672-6030/CN:12-1351/O3]

期数:
2013年1期
页码:
5
栏目:
纳米技术
出版日期:
2013-01-15

文章信息/Info

Title:
 多壁碳纳米管湿度传感器介电损耗模型
作者:
 Zhao Zhengang Li Chuan Wan Zhou Xie Tao Li Yingna Ouyang Xin
 Faculty of Information Engineering and Automation, Kunming University of Science and Technology,Kunming 650051, China
Author(s):
 赵振刚 李川 万舟 谢涛 李英娜 欧阳鑫
 昆明理工大学信息工程与自动化学院, 昆明650051
关键词:
 carbon nanotubes (CNTs) humidity sensor frequency properties dielectric loss
Keywords:
 碳纳米管(CNTs) 湿度传感器 频率特性 介电损耗
分类号:
-
DOI:
-
文献标识码:
A
摘要:
 To study the dielectric loss of carbon nanotubes (CNTs) humidity sensor, a humidity sensor based on multi-wall CNTs was fabricated. The frequency properties were analyzed by dielectric loss theories, and the dielectric loss model was built by universal law. Fitting the model with experimental data, the R-square is 0.994, which verifies that the universal law can be used to describe the dielectric loss of the sensor. As the change in sensor resistance caused by test frequency can affect sensor linearity, the linearity of the sensor under different test frequencies was also analyzed. It is found that when the frequency is 10 kHz, the sensor presents the best linearity (1.52%), and the corresponding sensitivity is -7.83 Ω/%RH.
Abstract:
 为揭示碳纳米管湿度传感器的介电损耗,制作了一种电阻型碳纳米管湿度传感器. 使用介电损耗相关理论对其频率特性进行分析,并利用普适方程建立了传感器介电损耗模型.对实验数据与所建立模型进行拟合,得到拟合决定系数为0.994,表明可以使用普适方程对传感器介电损耗进行描述. 由于测试频率引起的传感器电阻变化会改变传感器线性度,分析了不同测试频率下传感器的线性度,发现当测试频率为10 kHz时传感器的线性度最佳(1.52%),此时传感器灵敏度为-7.83 Ω/%RH.

参考文献/References

备注/Memo

备注/Memo:
更新日期/Last Update: 2013-02-22