A Simple Graphene NH<sub>3</sub> Gas Sensor via Laser Direct Writing
Ammonia gas sensors are very essential in many industries and everyday life. However, their complicated fabrication process, severe environmental fabrication requirements and desorption of residual ammonia molecules result in high cost and hinder their market acceptance. Here, laser direct writing i...
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MDPI AG
2018-12-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/18/12/4405 |
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doaj-f031bff6831245a589a31d35c352fa002020-11-25T01:02:25ZengMDPI AGSensors1424-82202018-12-011812440510.3390/s18124405s18124405A Simple Graphene NH<sub>3</sub> Gas Sensor via Laser Direct WritingDezhi Wu0Qianqian Peng1Shan Wu2Guangshun Wang3Lei Deng4Huiling Tai5Lingyun Wang6Yajie Yang7Linxi Dong8Yang Zhao9Jinbao Zhao10Daoheng Sun11Liwei Lin12Department of Mechanical and Electrical Engineering, Xiamen University, Xiamen 361005, ChinaDepartment of Mechanical and Electrical Engineering, Xiamen University, Xiamen 361005, ChinaDepartment of Mechanical and Electrical Engineering, Xiamen University, Xiamen 361005, ChinaDepartment of Mechanical and Electrical Engineering, Xiamen University, Xiamen 361005, ChinaDepartment of Mechanical and Electrical Engineering, Xiamen University, Xiamen 361005, ChinaState Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, ChinaDepartment of Mechanical and Electrical Engineering, Xiamen University, Xiamen 361005, ChinaState Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, ChinaKey Laboratory of RF Circuits and System of Ministry of Education, Hangzhou Dianzi University, Hangzhou 310018, ChinaDepartment of Mechanical and Electrical Engineering, Xiamen University, Xiamen 361005, ChinaDepartment of Chemical Engineering, Xiamen University, Xiamen 361005, ChinaDepartment of Mechanical and Electrical Engineering, Xiamen University, Xiamen 361005, ChinaDepartment of Mechanical and Electrical Engineering, Xiamen University, Xiamen 361005, ChinaAmmonia gas sensors are very essential in many industries and everyday life. However, their complicated fabrication process, severe environmental fabrication requirements and desorption of residual ammonia molecules result in high cost and hinder their market acceptance. Here, laser direct writing is used to fabricate three parallel porous 3D graphene lines on a polyimide (PI) tape to simply construct an ammonia gas sensor. The middle one works as an ammonia sensing element and the other two on both sides work as heaters to improve the desorption performance of the sensing element to ammonia gas molecules. The graphene lines were characterized by scanning electron microscopy and Raman spectroscopy. The response and recovery time of the sensor without heating are 214 s and 222 s with a sensitivity of 0.087% ppm<sup>−1</sup> for sensing 75 ppm ammonia gas, respectively. The experimental results prove that under the optimized heating temperature of about 70 °C the heaters successfully help implement complete desorption of residual NH<sub>3</sub> showing a good sensitivity and cyclic stability.https://www.mdpi.com/1424-8220/18/12/4405ammonia gas sensorgraphenelaser direct writing |
| collection |
DOAJ |
| language |
English |
| format |
Article |
| sources |
DOAJ |
| author |
Dezhi Wu Qianqian Peng Shan Wu Guangshun Wang Lei Deng Huiling Tai Lingyun Wang Yajie Yang Linxi Dong Yang Zhao Jinbao Zhao Daoheng Sun Liwei Lin |
| spellingShingle |
Dezhi Wu Qianqian Peng Shan Wu Guangshun Wang Lei Deng Huiling Tai Lingyun Wang Yajie Yang Linxi Dong Yang Zhao Jinbao Zhao Daoheng Sun Liwei Lin A Simple Graphene NH<sub>3</sub> Gas Sensor via Laser Direct Writing Sensors ammonia gas sensor graphene laser direct writing |
| author_facet |
Dezhi Wu Qianqian Peng Shan Wu Guangshun Wang Lei Deng Huiling Tai Lingyun Wang Yajie Yang Linxi Dong Yang Zhao Jinbao Zhao Daoheng Sun Liwei Lin |
| author_sort |
Dezhi Wu |
| title |
A Simple Graphene NH<sub>3</sub> Gas Sensor via Laser Direct Writing |
| title_short |
A Simple Graphene NH<sub>3</sub> Gas Sensor via Laser Direct Writing |
| title_full |
A Simple Graphene NH<sub>3</sub> Gas Sensor via Laser Direct Writing |
| title_fullStr |
A Simple Graphene NH<sub>3</sub> Gas Sensor via Laser Direct Writing |
| title_full_unstemmed |
A Simple Graphene NH<sub>3</sub> Gas Sensor via Laser Direct Writing |
| title_sort |
simple graphene nh<sub>3</sub> gas sensor via laser direct writing |
| publisher |
MDPI AG |
| series |
Sensors |
| issn |
1424-8220 |
| publishDate |
2018-12-01 |
| description |
Ammonia gas sensors are very essential in many industries and everyday life. However, their complicated fabrication process, severe environmental fabrication requirements and desorption of residual ammonia molecules result in high cost and hinder their market acceptance. Here, laser direct writing is used to fabricate three parallel porous 3D graphene lines on a polyimide (PI) tape to simply construct an ammonia gas sensor. The middle one works as an ammonia sensing element and the other two on both sides work as heaters to improve the desorption performance of the sensing element to ammonia gas molecules. The graphene lines were characterized by scanning electron microscopy and Raman spectroscopy. The response and recovery time of the sensor without heating are 214 s and 222 s with a sensitivity of 0.087% ppm<sup>−1</sup> for sensing 75 ppm ammonia gas, respectively. The experimental results prove that under the optimized heating temperature of about 70 °C the heaters successfully help implement complete desorption of residual NH<sub>3</sub> showing a good sensitivity and cyclic stability. |
| topic |
ammonia gas sensor graphene laser direct writing |
| url |
https://www.mdpi.com/1424-8220/18/12/4405 |
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