1：Experimental Design and Method Selection:

The study utilizes electrospinning technology to fabricate CuS/PVP nanowires, with a fluorination surface treatment to reduce electrostatic repulsion for deposition on flexible substrates. Theoretical models include localized surface plasmon resonance (LSPR) for optical properties.

2：Sample Selection and Data Sources:

CuS nanoparticles are synthesized via electrolysis and reaction with sodium sulfide. Substrates include glass, PET, and PEN films treated with fluorination.

3：List of Experimental Equipment and Materials:

Materials include copper plate electrode, sodium sulfide nonahydrate, PVP, methyl ethyl ketone, ammonia water, formic acid, acetic acid, sodium citrate dihydrate, ethanol, Novec EGC-1720, and fluorinert FC-40. Equipment includes XRD (Ultima IV CuK, Rigaku), HRTEM (JEM-2100F, JEOL), FE-SEM (MIRA-3, Tescan), UV-Vis-NIR spectrophotometer (UV-2600, JEOL; Jasco V670, ISN-723), haze meter (NDH 2000N, Nippon Denshoku Industries Co.), FT-IR (Nicolet iS10, Thermo Scientific), and a homemade bending test machine.

4：Equipment includes XRD (Ultima IV CuK, Rigaku), HRTEM (JEM-2100F, JEOL), FE-SEM (MIRA-3, Tescan), UV-Vis-NIR spectrophotometer (UV-2600, JEOL; Jasco V670, ISN-723), haze meter (NDH 2000N, Nippon Denshoku Industries Co.), FT-IR (Nicolet iS10, Thermo Scientific), and a homemade bending test machine. Experimental Procedures and Operational Workflow:

4. Experimental Procedures and Operational Workflow: CuS NPs are synthesized, then electrospun with PVP onto fluorinated substrates under specific conditions (voltage 25 kV, feeding rate 0.3 ml/h, etc.). Optical and mechanical tests are conducted, including bending and environmental reliability tests.

5：3 ml/h, etc.). Optical and mechanical tests are conducted, including bending and environmental reliability tests. Data Analysis Methods:

5. Data Analysis Methods: Optical properties are analyzed using UV-Vis-NIR spectrometry and haze measurements. Shielding efficiencies are calculated using integrals over wavelength ranges. Statistical analysis includes linear correlations and comparison with commercial films.