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Photonic nano-structures for water quality monitoring

机译：光子纳米结构用于水质监测

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摘要

We propose a new type of sensors suitable for water quality testing and for monitoring water contamination levels in domestic, industrial and environmental applications. The proposed sensing scheme uses Fourier transform cavityenhanced absorption spectroscopy and novel compact sensing elements based on nanostructured photonic crystal-type optical coatings enabling the sensitive Fourier-domain processing methodology and maximising the absorption path length within the measurement system. The measurement scheme is shown to be suitable for the determination of small changes in the water absorption coefficients at a discrete set of wavelengths in the visible spectral region in response to small concentrations of pollutants with high sensitivity. The proposed sensors are expected to provide real-time information on the water contamination levels, as well as potentially the types of substances dissolved.
机译：我们提出了一种适用于水质检测的新型传感器，并用于监测国内，工业和环境应用中的水污染水平。所提出的传感方案使用基于纳米结构光子晶体型光学涂层的傅里叶变换空腔吸收光谱和新型紧凑型感测元件，使得敏感的傅里叶域处理方法和最大化测量系统内的吸收路径长度最大化。测量方案被示出适合于确定可见光谱区域中的离散波长集中吸水系数的小变化，响应于具有高灵敏度的小浓度污染物。预计所提出的传感器将提供有关水污染水平的实时信息，以及潜在的物质类型溶解。

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