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<p>In order to detect skin and breast cancer, this article presents a cavity-based biosensor that uses a metamaterial array with a high Q-factor. The suggested biosensor has a unique arrangement of the metamaterial array cavity and electromagnetic band gap (EBG). In order to reduce dielectric loss and provide an electric shield for the transmission of the electric field into the metamaterial array cavity, an array of Interconnected Dumple (IT)-Shaped (ITS) EBG unit cells is positioned strategically on both sides of the biosensor in addition to the propagation path of the traveling wave. A traveling wave propagation line with two ports is used to activate the suggested biosensor. By using an RSSR and HSRR metamaterial array cavities together with EBG structure electric shielding, the biosensor is able to attain a high Q-factor of 65. The suggested biosensor, which measures 700 × 400 × 20 µm, detects skin and breast cancer using a frequency range of 0.71 THz. By positioning breast cancer, cutaneous cancer, and normal tissues on the sensor, a simulation-based performance analysis is carried out. The biosensor can report sensitivities of 82&#xa0;GHz/RIU and 102&#xa0;GHz/RIU for normal tissue and skin cancer, respectively, and 75&#xa0;GHz/RIU and 108&#xa0;GHz/RIU for normal breast and breast cancer, respectively, by using the second-order Debye model.</p>

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Metamaterial cavity based EBG loaded THz breast and skin cancer biosensor with high Q-factor

  • 期刊论文

  • 发表日期：

    2025年3月11日

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  • S. Lokesh,
  • B. Sathyasri,
  • G. B. Christina,
  • T. R. Dinesh Kumar

摘要

In order to detect skin and breast cancer, this article presents a cavity-based biosensor that uses a metamaterial array with a high Q-factor. The suggested biosensor has a unique arrangement of the metamaterial array cavity and electromagnetic band gap (EBG). In order to reduce dielectric loss and provide an electric shield for the transmission of the electric field into the metamaterial array cavity, an array of Interconnected Dumple (IT)-Shaped (ITS) EBG unit cells is positioned strategically on both sides of the biosensor in addition to the propagation path of the traveling wave. A traveling wave propagation line with two ports is used to activate the suggested biosensor. By using an RSSR and HSRR metamaterial array cavities together with EBG structure electric shielding, the biosensor is able to attain a high Q-factor of 65. The suggested biosensor, which measures 700 × 400 × 20 µm, detects skin and breast cancer using a frequency range of 0.71 THz. By positioning breast cancer, cutaneous cancer, and normal tissues on the sensor, a simulation-based performance analysis is carried out. The biosensor can report sensitivities of 82 GHz/RIU and 102 GHz/RIU for normal tissue and skin cancer, respectively, and 75 GHz/RIU and 108 GHz/RIU for normal breast and breast cancer, respectively, by using the second-order Debye model.