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PIER PIER B PIER C PIER M PIER Letters PIER Photonics
2024-04-03
Ultra Thin Highly Sensitive Metamaterial Absorber Based Refractive Index Sensor for Detecting Adulterants in Alcohol
By
Sagnik Banerjee,

    Dr. Sagnik Banerjee

    School of Electronics Engineering

    Kalinga Institute of Industrial Technology

    India

    Homepage

Ishani Ghosh,

    Dr. Ishani Ghosh

    Department of Mechanical and Aerospcae Engineering

    Sapienza University of Rome

    Italy

    Homepage

Mazed Billah Fahad,

    Dr. Mazed Billah Fahad

    Department of Information Engineering, Electronics and Telecommunications

    Sapienza University of Rome

    Italy

    Homepage

Santosh Kumar Mishra,

    Dr. Santosh Kumar Mishra

    School of Electronics Engineering

    Kalinga Institute of Industrial Technology

    India

    Homepage

Rahul Yadav,

    Dr. Rahul Yadav

    Nokia Solutions and Networks Oy

    Finland

    Homepage

Bhargav Appasani

    Dr. Bhargav Appasani

    Department of Electronics Engineering

    Kalinga Institute of Industrial Technology

    India

    Homepage

Progress In Electromagnetics Research M, Vol. 126, 81-88, 2024
doi:10.2528/PIERM23103003 | Google Scholar

Abstract
This research provides a unique design of a terahertz-frequency metamaterial absorber. The absorber shows resonance at frequency 5.01THz where the peak absorption is 99.5%. A staggering quality factor of 125.25 is also discovered. Since the radiation is non-ionizing, the metamaterial absorber can function as a refractive index sensor and can be used for sensing applications. To support the chosen design parameter values, parametric analysis was performed. The resonance mechanism has been clearly explained using the surface current distribution plot, and the metamaterial nature of the sensor has also been justified using the impedance plot, followed by the plot showing the permeability and permittivity at the resonance frequency. By detecting changes in the refractive index of the surrounding medium, the proposed sensor finds application in detecting the percentage of water and percentage of methanol in alcohol solution. Methanol and water are two prominent contaminants of alcohol. It can detect the percentage of water in alcohol with a sensitivity of 2.105 THz/RIU and can detect percentage of methanol in alcohol with a sensitivity of 1.999 THz/RIU. This work can inspire future research on using THz metamaterial absorbers for quality assessment of food products and beverages.
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Citation
Sagnik Banerjee, Ishani Ghosh, Mazed Billah Fahad, Santosh Kumar Mishra, Rahul Yadav, and Bhargav Appasani, "Ultra Thin Highly Sensitive Metamaterial Absorber Based Refractive Index Sensor for Detecting Adulterants in Alcohol," Progress In Electromagnetics Research M, Vol. 126, 81-88, 2024.
doi:10.2528/PIERM23103003
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