Ultra-sensitive near-infrared fiber-optic gas sensors enhanced by metal-organic frameworks

Xinyuan Chong; Ki-Joong Kim; Erwen Li; Yujing Zhang; Paul R. Ohodnicki Jr.; Chih-Hung Chang; Alan X. Wang

doi:10.1117/12.2214021

7 March 2016 Ultra-sensitive near-infrared fiber-optic gas sensors enhanced by metal-organic frameworks

Xinyuan Chong, Ki-Joong Kim, Erwen Li, Yujing Zhang, Paul R. Ohodnicki Jr., Chih-Hung Chang, Alan X. Wang

Proceedings Volume 9702, Optical Fibers and Sensors for Medical Diagnostics and Treatment Applications XVI; 970207 (2016) https://doi.org/10.1117/12.2214021
Event: SPIE BiOS, 2016, San Francisco, California, United States

Abstract

We demonstrate ultra-sensitive near-infrared (NIR) fiber-optic gas sensors enhanced by metalorganic framework (MOF) Cu-BTC (BTC=benzene-1,3,5- tricarboxylate), which is coated on a single-mode optical fiber. For the first time, we obtained high-resolution NIR spectroscopy of CO₂ adsorbed in MOF without seeing any rotational side band. Real-time measurement showed different response time depending on the concentration of CO₂, which is attributed to the complex adsorption and desorption mechanism of CO₂ in Cu-BTC. The lowest detection limit of CO₂ we achieved is 20 ppm with only 5-cm long Cu-BTC film.

Conference Presentation

Citation Download Citation

Xinyuan Chong, Ki-Joong Kim, Erwen Li, Yujing Zhang, Paul R. Ohodnicki Jr., Chih-Hung Chang, and Alan X. Wang "Ultra-sensitive near-infrared fiber-optic gas sensors enhanced by metal-organic frameworks", Proc. SPIE 9702, Optical Fibers and Sensors for Medical Diagnostics and Treatment Applications XVI, 970207 (7 March 2016); https://doi.org/10.1117/12.2214021

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