1：Experimental Design and Method Selection:

The study uses numerical simulations based on finite-difference time-domain (FDTD) methods to design and analyze a metamaterial absorber unit cell. The design incorporates a metallic cross-cave-patch structure and an InSb dielectric layer on a ground plane, with temperature-dependent permittivity modeled using the Drude model.

2：Sample Selection and Data Sources:

The unit cell is defined with specific geometric parameters (e.g., px = py = 90 μm, l = 80 μm, w = 4 μm, gold thickness of 0.4 μm, InSb thickness of 8 μm). Data on material properties (e.g., permittivity of InSb) are derived from theoretical models and literature.

3：4 μm, InSb thickness of 8 μm). Data on material properties (e.g., permittivity of InSb) are derived from theoretical models and literature. List of Experimental Equipment and Materials:

3. List of Experimental Equipment and Materials: Software (CST Microwave Studio) for simulations; materials include gold (conductivity 4.09 × 10^7 S/m) and InSb dielectric.

4：09 × 10^7 S/m) and InSb dielectric. Experimental Procedures and Operational Workflow:

4. Experimental Procedures and Operational Workflow: Simulations are performed with normal incident plane wave excitation, perfectly matched layers along z-axis, and periodic boundary conditions in x and y directions. Absorbance is calculated as A(ω) = 1 - |S11(ω)|^

5：Data Analysis Methods:

Analysis includes calculating absorbance spectra, surface current distributions, Q-factors, and sensitivity S = Δf/ΔT for temperature sensing performance.