Using regularly patterned silicon nanoporous pillar array (Si-NPA) prepared by hydrothermal etching method as substrate in this thesis, Ni/Si-NPA nanocomposite system with different surface morphologies has been synthesized by immersion plating method through changing Ni~(2+) concentration、pH value of concentration、different oxidation status on the surface of Si-NPA substrate、depositing time. The results indicated that Ni~(2+) concentration、pH value、oxidation status on Si-NPA surface and depositi...