Abstract
The use of a simple fluorescence microscopy-based image analysis method for quantitative gas detection experiments is presented. The method can help study many aspects of gas sensing where visualization and spatially resolved measurements are necessary. In this initial study, the basic parameters of gas sensing such as the sensitivity and responsivity of the microscopy-based image analysis method were compared to, and shown to be better than the more commonly used UV-Vis spectrophotometer-based measurements, for the specific case of detecting NO2 gas using perylene dye doped PMMA (P-PMMA) thin films and individual nanofibers. A film thickness study was performed to identify that the responsivity and sensitivity of the films are controlled by NO2 diffusion.
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