1：Experimental Design and Method Selection:

A two-step sol-gel process was used to synthesize homogenous core-shell AgNWs@SiO2. The nanocomposites were prepared by introducing AgNWs@SiO2 into PDMS matrix.

2：The nanocomposites were prepared by introducing AgNWs@SiO2 into PDMS matrix. Sample Selection and Data Sources:

2. Sample Selection and Data Sources: Silver nanowires (AgNWs) were prepared through a polyol method. Core-shell nanostructure of silica-coated AgNWs (AgNWs@SiO2) was synthesized through a flexible sol-gel approach.

3：List of Experimental Equipment and Materials:

Field emission scanning electron microscopy (FESEM, SU-8010, Hitachi Ltd, Japan), transmission electron microscopy (TEM, HT-7700, Hitachi Ltd, Japan), X-ray diffraction (XRD, EMPYREAN, PANalytical Co., Netherlands), Fourier transform infrared spectrometer (FTIR, VERTEX-70, Bruker, Ettlingen, Germany), X-ray photoelectron spectrometer (XPS, Thermo ESCALAB 250XI, USA), thermogravimetric analysis (TGA, Q500, USA), differential scanning calorimetry (DSC, NETZSCH DSC 204 HP, Germany), 4294 A Precision Impedance Analyzer (Agilent), OCA20 (Dataphysics, Germany), atomic force microscope (AFM, MultiMode, VEECO, USA), universal test machine (UTM2503, Suns, Shenzhen), dynamic mechanical analysis (DMA Q800, USA).

4：Experimental Procedures and Operational Workflow:

AgNWs were synthesized and then coated with SiO2 through a sol-gel approach. The AgNWs@SiO2/PDMS nanocomposites were prepared by solution blending and casting approach. The dielectric, hydrophobic, and mechanical properties of the nanocomposites were characterized.

5：Data Analysis Methods:

The dielectric properties were analyzed using a Precision Impedance Analyzer. The hydrophobic properties were measured by static contact angle measurements. The mechanical properties were tested using a universal test machine and dynamic mechanical analysis.