Sensing Properties of a Novel Temperature Sensor Based on Field Assisted Thermal Emission
The existing temperature sensors using carbon nanotubes (CNTs) are limited by low sensitivity, complicated processes, or dependence on microscopy to observe the experimental results. Here we report the fabrication and successful testing of an ionization temperature sensor featuring non-self-sustaini...
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doaj-17988a6415bb44819da6c6436463b2552020-11-25T02:17:46ZengMDPI AGSensors1424-82202017-02-0117347310.3390/s17030473s17030473Sensing Properties of a Novel Temperature Sensor Based on Field Assisted Thermal EmissionZhigang Pan0Yong Zhang1Zhenzhen Cheng2Jiaming Tong3Qiyu Chen4Jianpeng Zhang5Jiaxiang Zhang6Xin Li7Yunjia Li8State Key Laboratory of Electrical Insulation and Power Equipment, Xi’an Jiaotong University, Xi’an 710-049, ChinaState Key Laboratory of Electrical Insulation and Power Equipment, Xi’an Jiaotong University, Xi’an 710-049, ChinaState Key Laboratory of Electrical Insulation and Power Equipment, Xi’an Jiaotong University, Xi’an 710-049, ChinaState Key Laboratory of Electrical Insulation and Power Equipment, Xi’an Jiaotong University, Xi’an 710-049, ChinaState Key Laboratory of Electrical Insulation and Power Equipment, Xi’an Jiaotong University, Xi’an 710-049, ChinaState Key Laboratory of Electrical Insulation and Power Equipment, Xi’an Jiaotong University, Xi’an 710-049, ChinaState Key Laboratory of Electrical Insulation and Power Equipment, Xi’an Jiaotong University, Xi’an 710-049, ChinaVacuum Micro-Electronic & Micro-Electronic Mechanical Institute, School of Electronics and Information Engineering, Xi’an Jiaotong University, Xi’an 710049, ChinaState Key Laboratory of Electrical Insulation and Power Equipment, Xi’an Jiaotong University, Xi’an 710-049, ChinaThe existing temperature sensors using carbon nanotubes (CNTs) are limited by low sensitivity, complicated processes, or dependence on microscopy to observe the experimental results. Here we report the fabrication and successful testing of an ionization temperature sensor featuring non-self-sustaining discharge. The sharp tips of nanotubes generate high electric fields at relatively low voltages, lowering the work function of electrons emitted by CNTs, and thereby enabling the safe operation of such sensors. Due to the temperature effect on the electron emission of CNTs, the collecting current exhibited an exponential increase with temperature rising from 20 °C to 100 °C. Additionally, a higher temperature coefficient of 0.04 K−1 was obtained at 24 V voltage applied on the extracting electrode, higher than the values of other reported CNT-based temperature sensors. The triple-electrode ionization temperature sensor is easy to fabricate and converts the temperature change directly into an electrical signal. It shows a high temperature coefficient and good application potential.http://www.mdpi.com/1424-8220/17/3/473temperature sensorcarbon nanotubesionizationemission |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Zhigang Pan Yong Zhang Zhenzhen Cheng Jiaming Tong Qiyu Chen Jianpeng Zhang Jiaxiang Zhang Xin Li Yunjia Li |
spellingShingle |
Zhigang Pan Yong Zhang Zhenzhen Cheng Jiaming Tong Qiyu Chen Jianpeng Zhang Jiaxiang Zhang Xin Li Yunjia Li Sensing Properties of a Novel Temperature Sensor Based on Field Assisted Thermal Emission Sensors temperature sensor carbon nanotubes ionization emission |
author_facet |
Zhigang Pan Yong Zhang Zhenzhen Cheng Jiaming Tong Qiyu Chen Jianpeng Zhang Jiaxiang Zhang Xin Li Yunjia Li |
author_sort |
Zhigang Pan |
title |
Sensing Properties of a Novel Temperature Sensor Based on Field Assisted Thermal Emission |
title_short |
Sensing Properties of a Novel Temperature Sensor Based on Field Assisted Thermal Emission |
title_full |
Sensing Properties of a Novel Temperature Sensor Based on Field Assisted Thermal Emission |
title_fullStr |
Sensing Properties of a Novel Temperature Sensor Based on Field Assisted Thermal Emission |
title_full_unstemmed |
Sensing Properties of a Novel Temperature Sensor Based on Field Assisted Thermal Emission |
title_sort |
sensing properties of a novel temperature sensor based on field assisted thermal emission |
publisher |
MDPI AG |
series |
Sensors |
issn |
1424-8220 |
publishDate |
2017-02-01 |
description |
The existing temperature sensors using carbon nanotubes (CNTs) are limited by low sensitivity, complicated processes, or dependence on microscopy to observe the experimental results. Here we report the fabrication and successful testing of an ionization temperature sensor featuring non-self-sustaining discharge. The sharp tips of nanotubes generate high electric fields at relatively low voltages, lowering the work function of electrons emitted by CNTs, and thereby enabling the safe operation of such sensors. Due to the temperature effect on the electron emission of CNTs, the collecting current exhibited an exponential increase with temperature rising from 20 °C to 100 °C. Additionally, a higher temperature coefficient of 0.04 K−1 was obtained at 24 V voltage applied on the extracting electrode, higher than the values of other reported CNT-based temperature sensors. The triple-electrode ionization temperature sensor is easy to fabricate and converts the temperature change directly into an electrical signal. It shows a high temperature coefficient and good application potential. |
topic |
temperature sensor carbon nanotubes ionization emission |
url |
http://www.mdpi.com/1424-8220/17/3/473 |
work_keys_str_mv |
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