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In this article, a novel highly sensitive biosensor based on perfect metamaterial absorbers is presented. A detailed study is presented for several different models, different types of substrate materials, different types of resonant materials and substrate thicknesses showing very good sensitivity to any changes. The proposed biosensor exhibits high sensitivity to different polarization and incidence angles, ensuring its performance in terms of signal-to-noise ratio. The proposed biosensor was carefully compared with previously designed sensors and biosensors. The proposed biosensor exhibits amazing sensitivity, such as a quality factor of 41.1, a figure of merit (FOM) of 172466416 RIU-1, and a sensitivity (S) of 18626373 THz/RIU. The high sensitivity of the biosensor allows early detection of leukemia, demonstrating significant differences between leukemia and normal blood. Another interesting result of this article is the use of terahertz waves for imaging. Microwave imaging is performed for electric fields, magnetic fields, and power.
Hamza et al. (Mon,) studied this question.