Silicon microring refractometric sensor for atmospheric CO2 gas monitoring
Silicon microring refractometric sensor for atmospheric CO2 gas monitoring
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DOI：
10.1364/oe.24.001773
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发表时间：
2016-01-25
期刊：
影响因子：
3.8
通讯作者：
Van, Vien
中科院分区：
文献类型：
--
作者：
Mi, Guangcan;Horvath, Cameron;Van, Vien
我们报道了一种在室温下工作的硅光子折射CO2气体传感器，能够检测大气浓度的CO2气体。该传感器使用一种基于胍类聚合物衍生物的新型功能材料层，在吸收和释放二氧化碳气体分子时表现出可逆的折射率变化，并且不需要湿度存在即可操作。通过用薄层聚合物功能化硅微环谐振器，我们可以检测0-500ppm范围内的CO2气体浓度，灵敏度为6 x 10(-9) RIU/ppm，检测限为20ppm。微环传感器为开发低成本紧凑型二氧化碳传感器提供了一种潜在的集成解决方案，可以作为传感器网络的一部分部署，用于精确监测温室气体的环境。(C) 2016年美国光学学会
We report a silicon photonic refractometric CO2 gas sensor operating at room temperature and capable of detecting CO2 gas at atmospheric concentrations. The sensor uses a novel functional material layer based on a guanidine polymer derivative, which is shown to exhibit reversible refractive index change upon absorption and release of CO2 gas molecules, and does not require the presence of humidity to operate. By functionalizing a silicon microring resonator with a thin layer of the polymer, we could detect CO2 gas concentrations in the 0-500ppm range with a sensitivity of 6 x 10(-9) RIU/ppm and a detection limit of 20ppm. The microring transducer provides a potential integrated solution in the development of low-cost and compact CO2 sensors that can be deployed as part of a sensor network for accurate environmental monitoring of greenhouse gases. (C) 2016 Optical Society of America