Micromodeling of gas sensing mechanism
With the development of engineering industry, combustible and toxic gases monitoring and sensing are increasingly required by society for healthy environmental conditions, and safety reasons. Semiconducting gas sensors provide an economic and attractive solution to many of these monitoring problems....
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| Format: | Thesis |
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2008
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| Online Access: | http://hdl.handle.net/10356/4198 |
| _version_ | 1826113850430193664 |
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| author | Low, Daniel Ah Boey. |
| author2 | Birlarsekaran |
| author_facet | Birlarsekaran Low, Daniel Ah Boey. |
| author_sort | Low, Daniel Ah Boey. |
| collection | NTU |
| description | With the development of engineering industry, combustible and toxic gases monitoring and sensing are increasingly required by society for healthy environmental conditions, and safety reasons. Semiconducting gas sensors provide an economic and attractive solution to many of these monitoring problems. Semiconducting gas sensors rely on changes of conductance induced by adsorption of gases and by subsequent surface reactions. The conduction model based on Schottky potential barrier at grain boundary is the widely accepted mechanism. In situations where a mixture of two or more gases are present the application of this model is not understood. The analysis indicates that the conductance model for a gas mixture follows closely the Schottky model. It is found that the barrier potential is a complex function of the reacting gases. |
| first_indexed | 2024-10-01T03:29:39Z |
| format | Thesis |
| id | ntu-10356/4198 |
| institution | Nanyang Technological University |
| last_indexed | 2024-10-01T03:29:39Z |
| publishDate | 2008 |
| record_format | dspace |
| spelling | ntu-10356/41982023-07-04T16:48:46Z Micromodeling of gas sensing mechanism Low, Daniel Ah Boey. Birlarsekaran School of Electrical and Electronic Engineering DRNTU::Engineering::Electrical and electronic engineering::Electronic circuits With the development of engineering industry, combustible and toxic gases monitoring and sensing are increasingly required by society for healthy environmental conditions, and safety reasons. Semiconducting gas sensors provide an economic and attractive solution to many of these monitoring problems. Semiconducting gas sensors rely on changes of conductance induced by adsorption of gases and by subsequent surface reactions. The conduction model based on Schottky potential barrier at grain boundary is the widely accepted mechanism. In situations where a mixture of two or more gases are present the application of this model is not understood. The analysis indicates that the conductance model for a gas mixture follows closely the Schottky model. It is found that the barrier potential is a complex function of the reacting gases. Master of Science (Consumer Electronics) 2008-09-17T09:46:32Z 2008-09-17T09:46:32Z 2000 2000 Thesis http://hdl.handle.net/10356/4198 Nanyang Technological University application/pdf |
| spellingShingle | DRNTU::Engineering::Electrical and electronic engineering::Electronic circuits Low, Daniel Ah Boey. Micromodeling of gas sensing mechanism |
| title | Micromodeling of gas sensing mechanism |
| title_full | Micromodeling of gas sensing mechanism |
| title_fullStr | Micromodeling of gas sensing mechanism |
| title_full_unstemmed | Micromodeling of gas sensing mechanism |
| title_short | Micromodeling of gas sensing mechanism |
| title_sort | micromodeling of gas sensing mechanism |
| topic | DRNTU::Engineering::Electrical and electronic engineering::Electronic circuits |
| url | http://hdl.handle.net/10356/4198 |
| work_keys_str_mv | AT lowdanielahboey micromodelingofgassensingmechanism |