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In this paper, a topological layered metastructure (TLM) is proposed, enabling the realization of a NOR logic gate and multiphysical sensing. For the given TLM, under transverse magnetic polarization, the magnetic field modulation characteristics of indium antimonide (InSb) are utilized to realize the NOR logic gate. By utilizing the transmission peaks of topological edge states, multiphysical quantity detection over wide ranges can be effectively achieved: the refractive index ranges from 15.0 to 18.0, the incidence angle ranges from 15° to 43°, and the temperature ranges from 305.15 K to 355.15 K, all within the frequency band of 12 to 14 terahertz. The optimization of the media thicknesses, the magnetic field intensities, and the refractive indices in the TLM is implemented through the Cuckoo Search Algorithm to achieve performance enhancement. This results in a sharp transmission peak that satisfies the Zak phase condition, significantly improving the sensing performance of the TLM. The corresponding optimized quality factors are 21619, 16125, and 18198, respectively. Compared to traditional sensors, the proposed TLM not only fulfills the function of a logic gate but also demonstrates superior performance in multiphysical sensing. It provides a new paradigm for electromagnetic wave control and functional integration.
Du et al. (Tue,) studied this question.