Abstract
This study presents a novel metamaterial (MTM) absorber-based microwave sensor designed for liquid oil detection, combining experimental validation and numerical simulations. The sensor leverages the Split Ring Resonator (SRR) technique and is simulated using Computer Simulation Technology (CST) based on the Finite Integration Technique (FIT) to analyze its electromagnetic properties. The design exhibits strong absorption at resonance frequencies of 3.26 GHz, 4.1 GHz, and 7.202 GHz, covering the S and C bands with absorption rates of 99.82 %, 98 %, and 99.30 %, respectively. The sensor’s absorption remains stable under varying polarization and incident angles, confirming its robustness. Numerical verification using two independent software tools supports the accuracy of the simulation, while experimental fabrication and sensor testing show minor deviations in the reflection data due to environmental factors and fabrication tolerances. The primary novelty of this sensor lies in its high-quality factor (Q-factor of 150.32), high sensitivity (0.93), and superior figure of merit (FOM of 81.375), outperforming previous designs. The sensor’s performance is demonstrated by detecting different edible oils—sunflower, peanut, and palm oil—through variations in their dielectric properties. The sensor’s resonance response shifts in accordance with the oils’ permittivity values, showcasing its potential in microfluidic applications such as edible oil sensing, fuel adulteration detection, and liquid chemical characterization. This work establishes a reliable, high-performance MTM absorber-based sensor suitable for various industrial applications, with significant potential for advanced liquid detection technologies.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call