Modelling and analysis of a triple-band metamaterial absorber for early-stage cervical cancer HeLa cell detection

• Published in: Optics and lasers in engineering Vol. 181; p. 108426
• Main Authors: Haque, S.M. Anowarul, Ahmed, Meraj, Alqahtani, Abdulrahman, Rahman, Mahamudur, Islam, Mohammad Tariqul, Samsuzzaman, Md
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.10.2024
• Subjects: Cervical cancer cell detection; Metamaterial absorber; Triple-band; Metamaterial absorber; Cervical cancer cell detection; Triple-band
• ISSN: 0143-8166; 1873-0302
• DOI: 10.1016/j.optlaseng.2024.108426

•Terahertz metamaterial absorber designed for cervical cancer detection using microwave imaging techniques.•Absorber achieves 99.75 %, 99.87 %, and 99.73 % absorption peaks at 6.606 THz, 6.824 THz, and 7.426 THz.•Polarization insensitive and stable over incident angles ranging from 0° to 90°.•High-quality factor of 494.3 and frequency shift per refractive index of 1.08 THz/RIU.•Effective biosensor for early-stage cervical cancer detection, leveraging advanced E-field and H-field analysis. The paper introduces a unique design and analysis of a terahertz metamaterial absorber (MMA) that can be used for early detection of cervical cancer by employing microwave imaging techniques. Computer Simulation Technology (CST) is used to design and analyze the proposed absorber. The MMA operates in the frequency range of 6–8 THz and can absorb energy in three specific spectral bands: 6.606 THz, 6.824 THz, and 7.426 THz, with absorption peaks of 99.75 %, 99.87 %, and 99.73 % correspondingly. The working principle of the absorber is described using the impedance matching and interference theory. The electric field (E), magnetic field (H), and surface current of the MMA are also examined. Finally, detecting cancerous HeLa cells is also being investigated by analyzing the E-field and H-field using microwave imaging. The suggested biosensor features a high-quality factor of 494.3, a frequency shifts per refractive index of 1.08 THz/RIU, and a figure of merit (FOM) of 42. The suggested MMA-based sensor has numerous advantages and can be utilized for early-stage cervical cancer detection.