Graphene-based THz wave gas sensor for methanol detection
Context: This study aims to model and simulate a graphene-based Methanol (CH3OH) detector. The primary objective of this research is to obtain different absorption responses against different methanol concentrations in the surrounding environment. This paper proposes a gap between layers to intensif...
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-06-01
|
| Series: | Sensing and Bio-Sensing Research |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214180425000753 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849691456069959680 |
|---|---|
| author | Saber Norouzi Hosein Alavi-Rad Seyed Saleh Ghoreishi Amiri Reza Yousefi Hadi Dehbovid |
| author_facet | Saber Norouzi Hosein Alavi-Rad Seyed Saleh Ghoreishi Amiri Reza Yousefi Hadi Dehbovid |
| author_sort | Saber Norouzi |
| collection | DOAJ |
| description | Context: This study aims to model and simulate a graphene-based Methanol (CH3OH) detector. The primary objective of this research is to obtain different absorption responses against different methanol concentrations in the surrounding environment. This paper proposes a gap between layers to intensify the direct interaction between methanol molecules and the detector. Furthermore, the THz spectrum is considered due to its potential and graphene-reliable modeling in THz frequencies. We investigate the effects of parameter variations and consequent response deviations. The significance of this research lies in that the detector is sensitive to the surrounding environment's refractive index. This sensitivity can be leveraged to detect any target components in air or liquid. Methods: This study was conducted involving an equivalent circuit model plus full-wave numerical simulation. Data were collected from MATLAB and CST, and they show acceptable convergence. The design methodology includes investigating impedance matching between the detector and the surrounding environment. The findings indicate that the proposed graphene-based detector appropriately reacts against methanol concentration. Our results demonstrate significant deviations in absorption response for methanol concentration above 50 ppm while the absorption response is highly robust against geometrical variations. It is shown that methanol vapor with concentrations from 50 ppm to 500 ppm covers absorption peaks all over the THz spectrum. Such a reliable methanol detector is highly in demand for healthcare applications due to its efficiency and capabilities. |
| format | Article |
| id | doaj-art-1cdd3201ebc54e949b23aefe1d79ce0f |
| institution | DOAJ |
| issn | 2214-1804 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Sensing and Bio-Sensing Research |
| spelling | doaj-art-1cdd3201ebc54e949b23aefe1d79ce0f2025-08-20T03:21:00ZengElsevierSensing and Bio-Sensing Research2214-18042025-06-014810080910.1016/j.sbsr.2025.100809Graphene-based THz wave gas sensor for methanol detectionSaber Norouzi0Hosein Alavi-Rad1Seyed Saleh Ghoreishi Amiri2Reza Yousefi3Hadi Dehbovid4Department of Electrical Engineering, No.C., Islamic Azad University, Noor, IranDepartment of Electrical Engineering, Lan.C., Islamic Azad University, Langarud, Iran; Corresponding author.Department of Electrical Engineering, No.C., Islamic Azad University, Noor, IranDepartment of Electrical Engineering, No.C., Islamic Azad University, Noor, IranDepartment of Electrical Engineering, No.C., Islamic Azad University, Noor, IranContext: This study aims to model and simulate a graphene-based Methanol (CH3OH) detector. The primary objective of this research is to obtain different absorption responses against different methanol concentrations in the surrounding environment. This paper proposes a gap between layers to intensify the direct interaction between methanol molecules and the detector. Furthermore, the THz spectrum is considered due to its potential and graphene-reliable modeling in THz frequencies. We investigate the effects of parameter variations and consequent response deviations. The significance of this research lies in that the detector is sensitive to the surrounding environment's refractive index. This sensitivity can be leveraged to detect any target components in air or liquid. Methods: This study was conducted involving an equivalent circuit model plus full-wave numerical simulation. Data were collected from MATLAB and CST, and they show acceptable convergence. The design methodology includes investigating impedance matching between the detector and the surrounding environment. The findings indicate that the proposed graphene-based detector appropriately reacts against methanol concentration. Our results demonstrate significant deviations in absorption response for methanol concentration above 50 ppm while the absorption response is highly robust against geometrical variations. It is shown that methanol vapor with concentrations from 50 ppm to 500 ppm covers absorption peaks all over the THz spectrum. Such a reliable methanol detector is highly in demand for healthcare applications due to its efficiency and capabilities.http://www.sciencedirect.com/science/article/pii/S2214180425000753MethanolToxic gas detectionGrapheneEquivalent circuit modelTHz |
| spellingShingle | Saber Norouzi Hosein Alavi-Rad Seyed Saleh Ghoreishi Amiri Reza Yousefi Hadi Dehbovid Graphene-based THz wave gas sensor for methanol detection Sensing and Bio-Sensing Research Methanol Toxic gas detection Graphene Equivalent circuit model THz |
| title | Graphene-based THz wave gas sensor for methanol detection |
| title_full | Graphene-based THz wave gas sensor for methanol detection |
| title_fullStr | Graphene-based THz wave gas sensor for methanol detection |
| title_full_unstemmed | Graphene-based THz wave gas sensor for methanol detection |
| title_short | Graphene-based THz wave gas sensor for methanol detection |
| title_sort | graphene based thz wave gas sensor for methanol detection |
| topic | Methanol Toxic gas detection Graphene Equivalent circuit model THz |
| url | http://www.sciencedirect.com/science/article/pii/S2214180425000753 |
| work_keys_str_mv | AT sabernorouzi graphenebasedthzwavegassensorformethanoldetection AT hoseinalavirad graphenebasedthzwavegassensorformethanoldetection AT seyedsalehghoreishiamiri graphenebasedthzwavegassensorformethanoldetection AT rezayousefi graphenebasedthzwavegassensorformethanoldetection AT hadidehbovid graphenebasedthzwavegassensorformethanoldetection |