Fig. 1. Schematic diagram of solvent double diffusion processed by water surface spreading method

Fig. 2. Micromorphology diagram of organic membrane with different non-solvent (NaCl solution) component

Fig. 3. Morphology of precipitated crystals on organic membrane

Fig. 4. Thickness of organic membrane with different mass concentration of NaCl solution

Fig. 5. Field of view of ion barrier MCP with different non-solvent (NaCl solution) component

Fig. 6. Electrical transmittance characteristics curves of MCP ion barrier film

Fig. 7. Current gain of MCP

Fig. 8. Plate resistance of MCP