The scope of the work proposed is two-fold. Researchers will first use a laser nano-fabrication technique to produce 3D structurally functional metal-oxide nano-materials for high-temperature gas sensing. Then, functional metal oxides will be integrated on high-temperature optical sensor platforms. Researchers will fabricate three-dimensional photonic crystals using functional metal oxides, utilizing a robust and simple approach to construct multi-beam interference patterns using a single diffractive optical element. Additionally, femto-second laser processing techniques will be used to produce high-temperature stable fiber grating sensors and long-period grating based in-fiber interferometer. The final aspect of the research effort includes coating metal-oxide nano-films inside the hollow core optical fibers to enhance the Raman and the photo-luminescence signals for gas sensing. The large surface area of nano-composite metal-oxides will serve as effective gas absorbers to reduce the fiber length needed for high-sensitivity measurements. Using coated hollow-tube waveguides, a number of spectroscopy studies will be performed to assess the feasibility of fuel gas sensing at high temperature.
This project will develop metal oxide nanostructure-based optical sensors for fossil fuel derived gas measurement at high temperatures. Precise and real-time knowledge of fuel gas composition and its derivatives after combustion will play an important role in improving energy production efficiency, reducing pollution, and lowering overall operating costs of advanced power generation systems.
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