Radius ratio rule for surface hydrophilization of polydimethyl siloxane and silica nanoparticle composite

- Binary hard sphere silica nanoparticle system based PDMS composite.
- Enhanced hydrophilization and retainability of the composite.
- Restriction of uncured PDMS from diffusion.
- Increased Debye length of electrostatic double layer, measured by F-D Spectroscopy.