Designing of Graphene-Gold Metasurface Surface Plasmon Resonance Sensor for Efficient Detection of Alcohol Compounds
摘要
The development of highly sensitive sensors for detecting alcohol compounds is crucial across diverse sectors, including healthcare, automotive safety, and law enforcement. This study presents a novel graphene-based sensor integrated with gold nanostructures for the efficient detection of alcohol compounds in the terahertz frequency range. Three distinct configurations of graphene and gold were investigated to optimize sensor performance. Finite element simulations were employed to assess the sensor’s response to varying refractive indices, corresponding to different alcohol compounds. The sensor demonstrated exceptional performance, exhibiting a remarkable sensitivity of 20,400 GHzRIU−1, a figure of merit of 120.71 RIU−1, and a detection limit of 0.006 RIU. Electric field analysis demonstrated a strong sensor-wave interactions in the terahertz regime, while two-bit encoding capabilities were achieved through modulation of graphene’s chemical potential. Compared to existing technologies, the proposed sensor exhibits superior sensitivity, holding significant promise for rapid, accurate, and non-invasive alcohol detection. Potential applications span healthcare, law enforcement, and public safety domains.