Abstract
This study utilized the Gas in Scattering Media Absorption Spectroscopy (GASMAS) technique to examine the diffusion dynamics of water vapor in commercial mesoporous silica MCM-41 and SBA-15. The GASMAS technique employed an innovative semiconductor laser configuration, utilizing a tunable diode laser at 936 nm to facilitate real-time monitoring of water vapor absorption. This approach is straightforward and economical, yielding localized insights into diffusion behavior. Our findings indicate a notably slow time constant rate, influenced by hydrogen bonding interactions with pore walls, size, and relative humidity.
| Original language | English |
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| Title of host publication | Optical Sensors 2025 |
| Editors | Francesco Baldini, Jiri Homola, Robert A. Lieberman |
| Publisher | SPIE |
| ISBN (Electronic) | 9781510688506 |
| DOIs | |
| State | Published - 2025 |
| Event | Optical Sensors 2025 - Prague, Czech Republic Duration: 7 Apr 2025 → 10 Apr 2025 |
Publication series
| Name | Proceedings of SPIE - The International Society for Optical Engineering |
|---|---|
| Volume | 13527 |
| ISSN (Print) | 0277-786X |
| ISSN (Electronic) | 1996-756X |
Conference
| Conference | Optical Sensors 2025 |
|---|---|
| Country/Territory | Czech Republic |
| City | Prague |
| Period | 7/04/25 → 10/04/25 |
Bibliographical note
Publisher Copyright:© 2025 SPIE. All rights reserved.
Keywords
- GASMAS
- Laser
- Silica
- Water
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Computer Science Applications
- Applied Mathematics
- Electrical and Electronic Engineering