Among the two past decades, the biodiesel fuels received a significant attention due to its lower hydrocarbon emissions and low sulfur diesel. However, the incomplete transesterification represents the main problem for the possibility of wider use. Thus, we present in this research a new method for detecting and measuring of methyl ester biodiesel fuel based on its optical characteristics. The proposed sensor is designed using the well-known one dimensional photonic crystals. The cornerstone of our idea is mainly based on two sides. First, the inclusion of methyl ester as a defect layer inside the one dimensional photonic crystals gives rise to the formation of a resonant peak within the photonic band gap. Second, the concentration of the converted methyl ester due to the transesterification reaction of soybean oil is closely related to its refractive index. Therefore, the sensing and detection procedure is essentially based on the dependence of the characteristics of the resona...

中文翻译：

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用于生物柴油检测和传感的光子晶体传感器的理论验证

在过去的两个十年中，由于其较低的碳氢化合物排放量和低硫柴油，生物柴油燃料受到了广泛关注。然而，不完全的酯交换反应代表了广泛使用的可能性的主要问题。因此，我们在这项研究中提出了一种基于其光学特性的检测和测量甲酯生物柴油燃料的新方法。建议的传感器是使用众所周知的一维光子晶体设计的。我们想法的基石主要基于两个方面。首先，在一维光子晶体内部包含甲酯作为缺陷层会在光子带隙内形成共振峰。第二，大豆油的酯交换反应引起的转化甲酯的浓度与其折射率密切相关。因此，传感和检测过程基本上是基于谐振腔特性的依赖。