Motor oils have to be changed periodically in a period of 10.000–20.000 km according to the motor types. A chiral metamaterial sensor that operates in X band is developed to determine the quality of motor oils, numerically analyzed and experimentally tested in this study. The proposed design has square and circular shaped resonators that are printed on IS680 substrate. Reflection coefficient parameters of S₁₁ and S₂₂ are employed for the verification of sensor. The physical principle behind the structure in this study is based on the degradation of motor oil, which changes dielectric constant and causes resonance frequency shifts. According to S₁₁ reflection coefficient data, 40 MHz(0 km–10000 km) and 60 MHz(0 km–5000 km) resonant frequency shifts are observed between clear and dirty motor oils samples. These shifts have the values of 30 MHz(0 km–10000 km) and 120 MHz(0 km–5000 km), when we look at S₂₂. The simulated and experimental study results are complying with each other. The novel side of this study is to have high sensitivity and higher quality factor when it is compared with similar study results. Furthermore, no such studies have been conducted so far in the literature.

根据发动机类型，必须在10.000–20.000 km的时间内定期更换机油。开发了一种在X波段工作的手性超材料传感器来确定机油的质量，并在本研究中对其进行了数值分析和实验测试。所提出的设计具有在IS680基板上印刷的方形和圆形谐振器。S ₁₁和S _22的反射系数参数用于验证传感器。在这项研究中，结构背后的物理原理是基于机油的降解，它会改变介电常数并引起共振频率偏移。根据S ₁₁在清澈和肮脏的机油样品之间观察到反射系数数据，分别为40 MHz（0 km-10000 km）和60 MHz（0 km-5000 km）共振频率偏移。当我们看S ₂₂时，这些偏移的值为30 MHz（0 km–10000 km）和120 MHz（0 km–5000 km）。模拟和实验研究结果相互吻合。与相似的研究结果相比，这项研究的新颖之处在于具有较高的灵敏度和更高的品质因数。此外，迄今为止在文献中还没有进行过这样的研究。