In this research, a one-dimensional photonic crystal sensor for detecting soybean biodiesel is presented theoretically. The proposed sensor is composed of two alternating layers of Si and SiO₂ with a defect layer of porous silicon immersed in the middle of this photonic crystal structure. The complete configuration of the proposed soybean photonic crystal sensor will be as [(Si/SiO₂)⁵ (PSi) (Si/SiO₂)⁵]. Thereby, a resonant peak is generated within the photonic band gap. This peak could be shifted downwards or upwards shorter or longer wavelengths due to any change in the concentration of soybean biodiesel. Therefore, the detection process could be investigated based on such variation. Also, the effects of many parameters, such as thickness of the porous silicon layer and temperature on the performance of our design are considered. In this regard, numerical results investigated high sensitivity and efficiency as well for the proposed soybean photonic crystal sensor.

在这项研究中，理论上提出了一种用于检测大豆生物柴油的一维光子晶体传感器。所提出的传感器由两个交替的Si和SiO ₂层组成，并在该光子晶体结构的中间浸有多孔硅的缺陷层。提出的大豆光子晶体传感器的完整配置将为[（Si / SiO ₂）⁵（PSi）（Si / SiO ₂）⁵]。由此，在光子带隙内产生共振峰。由于大豆生物柴油浓度的任何变化，该峰可能会在较短或更长的波长处向下或向上移动。因此，可以基于这种变化来研究检测过程。同样，考虑了许多参数的影响，例如多孔硅层的厚度和温度对我们设计性能的影响。在这方面，数值结果也研究了所提出的大豆光子晶体传感器的高灵敏度和高效率。