Microheater Topology for Advanced Gas Sensor Applications with Carbyne-Enriched Nanomaterials
The response characteristics of carbyne-enriched surface-acoustic-wave (SAW)-based gas sensors utilizing meander and rectangular microheater topologies were investigated to assess their desorption and recovery properties. Comparative analysis of contact resistance and interface capacitance before an...
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| Format: | Article |
| Language: | English |
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MDPI AG
2024-02-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/14/5/1728 |
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| author | Mariya Aleksandrova Belgina Ustova Tsvetozar Tsanev Ioannis Raptis Angeliki Tserepi Evangelos Gogolides Georgi Kolev |
| author_facet | Mariya Aleksandrova Belgina Ustova Tsvetozar Tsanev Ioannis Raptis Angeliki Tserepi Evangelos Gogolides Georgi Kolev |
| author_sort | Mariya Aleksandrova |
| collection | DOAJ |
| description | The response characteristics of carbyne-enriched surface-acoustic-wave (SAW)-based gas sensors utilizing meander and rectangular microheater topologies were investigated to assess their desorption and recovery properties. Comparative analysis of contact resistance and interface capacitance before and after heating revealed minimal deviation in contact resistance, signifying strong thermal stability in the carbyne-enriched layer. However, the interface capacitance varied with the microheater size. Our analysis reveals that a small meander microheater configuration (line width: 300 µm) facilitates efficient sensor recovery at ethanol concentration measurements in the range of 180–680 ppm, maintaining a low deviation in time delay across different concentrations (~2.3%), resulting in a narrow hysteresis and linear sensor response. Conversely, the large meander microheater (line width: 450 µm) and rectangular dense microheater induce irreversible changes in the sensing structure, leading to a widened hysteresis at higher concentrations and increased power consumption. Recovery patterns display substantial deviations from initial values at different concentration levels. Higher concentrations exhibit broader hysteresis, while lower concentrations show narrower hysteresis loops, compared to the small meander microheater. The study offers insights into desorption rates, power consumption variations, and recovery behaviors related to different microheater configurations. It demonstrates the importance of microheater topology selection in tailoring recovery properties and response characteristics, contributing to the advancement of carbyne-based sensor technology. |
| first_indexed | 2024-04-25T00:35:13Z |
| format | Article |
| id | doaj.art-370273c080cd45c0b4fa91a05d019a14 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-04-25T00:35:13Z |
| publishDate | 2024-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-370273c080cd45c0b4fa91a05d019a142024-03-12T16:38:41ZengMDPI AGApplied Sciences2076-34172024-02-01145172810.3390/app14051728Microheater Topology for Advanced Gas Sensor Applications with Carbyne-Enriched NanomaterialsMariya Aleksandrova0Belgina Ustova1Tsvetozar Tsanev2Ioannis Raptis3Angeliki Tserepi4Evangelos Gogolides5Georgi Kolev6Department of Microelectronics, Technical University of Sofia, 1756 Sofia, BulgariaDepartment of Microelectronics, Technical University of Sofia, 1756 Sofia, BulgariaDepartment of Microelectronics, Technical University of Sofia, 1756 Sofia, BulgariaNCSR Demokritos, 15341 Athens, GreeceNCSR Demokritos, 15341 Athens, GreeceNCSR Demokritos, 15341 Athens, GreeceDepartment of Microelectronics, Technical University of Sofia, 1756 Sofia, BulgariaThe response characteristics of carbyne-enriched surface-acoustic-wave (SAW)-based gas sensors utilizing meander and rectangular microheater topologies were investigated to assess their desorption and recovery properties. Comparative analysis of contact resistance and interface capacitance before and after heating revealed minimal deviation in contact resistance, signifying strong thermal stability in the carbyne-enriched layer. However, the interface capacitance varied with the microheater size. Our analysis reveals that a small meander microheater configuration (line width: 300 µm) facilitates efficient sensor recovery at ethanol concentration measurements in the range of 180–680 ppm, maintaining a low deviation in time delay across different concentrations (~2.3%), resulting in a narrow hysteresis and linear sensor response. Conversely, the large meander microheater (line width: 450 µm) and rectangular dense microheater induce irreversible changes in the sensing structure, leading to a widened hysteresis at higher concentrations and increased power consumption. Recovery patterns display substantial deviations from initial values at different concentration levels. Higher concentrations exhibit broader hysteresis, while lower concentrations show narrower hysteresis loops, compared to the small meander microheater. The study offers insights into desorption rates, power consumption variations, and recovery behaviors related to different microheater configurations. It demonstrates the importance of microheater topology selection in tailoring recovery properties and response characteristics, contributing to the advancement of carbyne-based sensor technology.https://www.mdpi.com/2076-3417/14/5/1728carbyne-enriched layerSAW sensormicroheater topologysensor recovery |
| spellingShingle | Mariya Aleksandrova Belgina Ustova Tsvetozar Tsanev Ioannis Raptis Angeliki Tserepi Evangelos Gogolides Georgi Kolev Microheater Topology for Advanced Gas Sensor Applications with Carbyne-Enriched Nanomaterials Applied Sciences carbyne-enriched layer SAW sensor microheater topology sensor recovery |
| title | Microheater Topology for Advanced Gas Sensor Applications with Carbyne-Enriched Nanomaterials |
| title_full | Microheater Topology for Advanced Gas Sensor Applications with Carbyne-Enriched Nanomaterials |
| title_fullStr | Microheater Topology for Advanced Gas Sensor Applications with Carbyne-Enriched Nanomaterials |
| title_full_unstemmed | Microheater Topology for Advanced Gas Sensor Applications with Carbyne-Enriched Nanomaterials |
| title_short | Microheater Topology for Advanced Gas Sensor Applications with Carbyne-Enriched Nanomaterials |
| title_sort | microheater topology for advanced gas sensor applications with carbyne enriched nanomaterials |
| topic | carbyne-enriched layer SAW sensor microheater topology sensor recovery |
| url | https://www.mdpi.com/2076-3417/14/5/1728 |
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