Layered heterogeneous structures integrated device for multiplication, division arithmetic unit and multiple-physical sensing.

The article focuses on the theoretical design and optimization of a layered heterogeneous structure (LHS) composed of silver, liquid crystal (LC), and nonlinear dielectric layers, which leverages optical Tamm states, intrinsic LC absorption, and nonlinear effects to achieve multifunctional capabilities in optical computing and sensing. The LHS exhibits Janus properties, performing signal multiplication and division via frequency doubling depending on the direction of electromagnetic wave (EW) propagation, and enables high-sensitivity sensing of serum creatinine concentration, external pressure, and temperature with distinct performance metrics in forward and backward EW directions. Optimization of the LHS parameters is conducted using a Coati Optimization Algorithm (COA) driven Transfer Matrix Method (TMM), resulting in sharp absorptivity peaks with frequency relationships near two, facilitating integrated passive operations and multi-physical quantity detection. The study highlights the LHS's potential for applications in biomedical sensing and environmental monitoring, while noting that experimental fabrication and testing remain future work.