Development of Multilayer Metamaterial Absorber for Medical Applications

The paper proposes a metamaterial absorber design specifically engineered to operate at THz frequencies, serving as a sensor for medical applications using semiconductor multilayer metamaterial structure. Its intricate structure encompasses multiple layers, including a glass substrate, an InSb semiconductor layer, a MgF 2 buffer layer, an InSb resonator ring, additional buffer layers, and a mask. The proposed absorber incorporates Drude and Debye models to accurately represent the frequency-dependent permittivity of its constituent materials. Rigorous simulations are conducted using Finite Element Method (FEM) 3D EM simulator to evaluate its performance comprehensively over 1 THz frequency range and optimized to operate at 0.3 THz. The analysis encompasses various conditions, including absorption, transmission, and reflection across different frequencies and wavelengths. Results confirm the absorber’s efficacy in achieving expected absorption levels at the desired operational frequency of 0.3 THz, thereby validating its potential for effective utilization in biomedical sensing applications.