Electrical, Electronic and Communications Engineering Department, Public University of Navarre, 31006 Pamplona, Spain.
Institute of Smart Cities, Jeronimo de Ayanz Building, 31006 Pamplona, Spain.
Sensors (Basel). 2023 Jan 28;23(3):1459. doi: 10.3390/s23031459.
The use of planar waveguides has recently shown great success in the field of optical sensors based on the Lossy Mode Resonance (LMR) phenomenon. The properties of Graphene Oxide (GO) have been widely exploited in various sectors of science and technology, with promising results for gas sensing applications. This work combines both, the LMR-based sensing technology on planar waveguides and the use of a GO thin film as a sensitive coating, to monitor ethanol, water, and acetone. Experimental results on the fabrication and performance of the sensor are presented. The obtained results showed a sensitivity of 3.1, 2.0, and 0.6 pm/ppm for ethanol, water, and acetone respectively, with a linearity factor R > 0.95 in all cases.
平面波导在基于损耗模式共振（LMR）现象的光学传感器领域最近取得了巨大成功。氧化石墨烯（GO）的特性在科学技术的各个领域得到了广泛的利用，在气体传感应用方面取得了有前景的成果。这项工作结合了基于 LMR 的平面波导传感技术和 GO 薄膜作为敏感涂层，用于监测乙醇、水和丙酮。介绍了传感器的制作和性能的实验结果。得到的结果表明，乙醇、水和丙酮的灵敏度分别为 3.1、2.0 和 0.6 pm/ppm，在所有情况下线性度因子 R 均大于 0.95。
