Prototype edge-grown nanowire sensor array for the real-time monitoring and classification of multiple gases
The monitoring and classification of different gases using a single resistive semiconductor sensor are challenging because of the similar response characteristics. An array of separated sensors can be used as an electronic nose, but such arrays have a bulky structure and complex fabrication processe...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2020-09-01
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| Series: | Journal of Science: Advanced Materials and Devices |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2468217920300459 |
| _version_ | 1819076631567794176 |
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| author | Nguyen Xuan Thai Nguyen Van Duy Chu Manh Hung Hugo Nguyen Matteo Tonezzer Nguyen Van Hieu Nguyen Duc Hoa |
| author_facet | Nguyen Xuan Thai Nguyen Van Duy Chu Manh Hung Hugo Nguyen Matteo Tonezzer Nguyen Van Hieu Nguyen Duc Hoa |
| author_sort | Nguyen Xuan Thai |
| collection | DOAJ |
| description | The monitoring and classification of different gases using a single resistive semiconductor sensor are challenging because of the similar response characteristics. An array of separated sensors can be used as an electronic nose, but such arrays have a bulky structure and complex fabrication processes. Herein, we easily fabricated a gas-sensor array based on edge-grown SnO2 nanowires for the real-time monitoring and classification of multiple gases. The array comprised four sensors and was designed on a glass substrate. SnO2 nanowires were grown on-chip from the edge of electrodes, made contact together, and acted as sensing elements. This method was advantageous over the post-synthesis technique because the SnO2 nanowires were directly grown from the edge of the electrodes rather than on the surface. Accordingly, damage to the electrode was avoided by alloying Sn with Pt at a high growth temperature. The sensing characteristics of the sensor array were further examined for different gases, including methanol, isopropanol, ethanol, ammonia, hydrogen sulphide and hydrogen. Radar plots were used to improve the selective detection of different gases and enable effective classification. |
| first_indexed | 2024-12-21T18:44:23Z |
| format | Article |
| id | doaj.art-c619fdd0295b4f00b3aa8bfcddf48995 |
| institution | Directory Open Access Journal |
| issn | 2468-2179 |
| language | English |
| last_indexed | 2024-12-21T18:44:23Z |
| publishDate | 2020-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Science: Advanced Materials and Devices |
| spelling | doaj.art-c619fdd0295b4f00b3aa8bfcddf489952022-12-21T18:53:56ZengElsevierJournal of Science: Advanced Materials and Devices2468-21792020-09-0153409416Prototype edge-grown nanowire sensor array for the real-time monitoring and classification of multiple gasesNguyen Xuan Thai0Nguyen Van Duy1Chu Manh Hung2Hugo Nguyen3Matteo Tonezzer4Nguyen Van Hieu5Nguyen Duc Hoa6International Training Institute for Materials Science (ITIMS), Hanoi University of Science and Technology (HUST), No. 1, Dai Co Viet, Hanoi, Viet NamInternational Training Institute for Materials Science (ITIMS), Hanoi University of Science and Technology (HUST), No. 1, Dai Co Viet, Hanoi, Viet Nam; Corresponding author.International Training Institute for Materials Science (ITIMS), Hanoi University of Science and Technology (HUST), No. 1, Dai Co Viet, Hanoi, Viet Nam; Corresponding author.Uppsala University, Department of Materials Science and Engineering, Lägerhyddsvägen 1, 751 21, Uppsala, SwedenIMEM-CNR, sede di Trento - FBK, via alla Cascata 56/C, 38123, Povo, TN, Italy; Università degli Studi di Trento, Via Calepina 14, 38122, Trento, ItalyElectrical and Electronic Engineering, Phenikaa Institute for Advanced Study (PIAS), Phenikaa University, Yen Nghia, Ha Dong District, Hanoi, 10000, Viet Nam; Phenikaa Research and Technology Institute (PRATI), A&A Green Phoenix Group, 167 Hoang Ngan, Hanoi, 10000, Viet NamInternational Training Institute for Materials Science (ITIMS), Hanoi University of Science and Technology (HUST), No. 1, Dai Co Viet, Hanoi, Viet NamThe monitoring and classification of different gases using a single resistive semiconductor sensor are challenging because of the similar response characteristics. An array of separated sensors can be used as an electronic nose, but such arrays have a bulky structure and complex fabrication processes. Herein, we easily fabricated a gas-sensor array based on edge-grown SnO2 nanowires for the real-time monitoring and classification of multiple gases. The array comprised four sensors and was designed on a glass substrate. SnO2 nanowires were grown on-chip from the edge of electrodes, made contact together, and acted as sensing elements. This method was advantageous over the post-synthesis technique because the SnO2 nanowires were directly grown from the edge of the electrodes rather than on the surface. Accordingly, damage to the electrode was avoided by alloying Sn with Pt at a high growth temperature. The sensing characteristics of the sensor array were further examined for different gases, including methanol, isopropanol, ethanol, ammonia, hydrogen sulphide and hydrogen. Radar plots were used to improve the selective detection of different gases and enable effective classification.http://www.sciencedirect.com/science/article/pii/S2468217920300459Edge-grown SnO2 nanowiresGas sensorsGas classification |
| spellingShingle | Nguyen Xuan Thai Nguyen Van Duy Chu Manh Hung Hugo Nguyen Matteo Tonezzer Nguyen Van Hieu Nguyen Duc Hoa Prototype edge-grown nanowire sensor array for the real-time monitoring and classification of multiple gases Journal of Science: Advanced Materials and Devices Edge-grown SnO2 nanowires Gas sensors Gas classification |
| title | Prototype edge-grown nanowire sensor array for the real-time monitoring and classification of multiple gases |
| title_full | Prototype edge-grown nanowire sensor array for the real-time monitoring and classification of multiple gases |
| title_fullStr | Prototype edge-grown nanowire sensor array for the real-time monitoring and classification of multiple gases |
| title_full_unstemmed | Prototype edge-grown nanowire sensor array for the real-time monitoring and classification of multiple gases |
| title_short | Prototype edge-grown nanowire sensor array for the real-time monitoring and classification of multiple gases |
| title_sort | prototype edge grown nanowire sensor array for the real time monitoring and classification of multiple gases |
| topic | Edge-grown SnO2 nanowires Gas sensors Gas classification |
| url | http://www.sciencedirect.com/science/article/pii/S2468217920300459 |
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