Square Split Enclosed Labyrinth Maze Shaped Metamaterial Absorber for Hydrocarbon Sensing Application

In This paper Square Split Enclosed Labyrinth Maze Shaped structured metamaterial absorber (MMA) has been proposed for Hydrocarbon Sensing Application. The three-layered MMA design has an FR-4 substrate layer laminated copper and a resonating layer of concentric continuous and split rings. This MMA works together S-band and Ku band. Various parameters have been studied to understand the absorption characteristics of the MMA including reflection coefficient, magnetic fields, electric fields, surface currents. The MMA has an absorbance of 99.4% from 2.44 GHz - 3.57 GHz and an absorbance of 91.65%. Also, the proposed MMA sensor provides higher sensitivity in detecting different hydrocarbon by detecting the permittivity changes of the test objects Also, The MMA sensor setup had a peak reflection band at 11.28 GHz. The lowest band shift is 0.01 GHz between Heptane and Octane. That the average sensitivity of the MMA is 1.4 GHz/ε for different Hydrocarbon materials. The high absorbance makes this MMA suitable for various microwave applications, including hydrocarbon sensing applications.

I. Introduction

Metamaterials Absorber (MMA) is an artificial material that can manipulate electromagnetic waves and exhibit unique electromagnetic properties not found in naturally occurring materials. Metamaterials are artificially engineered structures with periodic arrays of sub wavelength building blocks. These materials have been extensively studied in recent years due to their potential applications in various fields,[1-2] such as sensing, imaging, communication, and energy harvesting. The properties of metamaterials are defined by their effective permittivity and permeability, which are different from those of natural materials. The concept of metamaterials was first introduced by Veselago in 1968,[3]–[5] and since then, the research on metamaterials has evolved rapidly. In recent years, multiband metamaterial absorbers have been proposed and studied extensively due to their potential applications in multiband sensing and imaging [6]–[9]. In recent years, multiband metamaterial absorbers have gained considerable attention due to their ability to absorb a wide range of frequencies. In this paper, we propose the design of a multiband absorber based Square Split Enclosed Labyrinth Maze Shaped Metamaterial Absorber Structured. The multilayer metamaterial structure is designed to be used in the frequency bands such as Sensing applications.