Improving nucleation in the fabrication of high-quality 3D macro-porous copper film through the surface-modification of a polystyrene colloid-assembled template |
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Authors: | Lan Ding Wang Yu-Ren Yu Yong Ma Wen-Jie and Li Cheng |
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Institution: | National Microgravity Laboratory, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100080, China |
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Abstract: | A new approach is developed to the fabrication of high-quality
three-dimensional macro-porous copper films. A highly-ordered
macroporous copper film is successfully produced on a
polystyrene sphere (PS) template that has been modified by
sodium dodecyl sulfate (SDS). It is shown that this procedure
can change a hydrophobic surface of PS template into a
hydrophilic surface. The present study is devoted to the
influence of the electrolyte solution transport on the
nucleation process. It is demonstrated that the permeability of
the electrolyte solution in the nanochannels of the PS template
plays an important role in the chemical electrodeposition of
high-quality macroporous copper film. The permeability is
drastically enhanced in our experiment through the surface
modification of the PS templates. The method could be used to
homogeneously produce a large number of nucleations on a
substrate, which is a key factor for the fabrication of the
high-quality macroporous copper film. |
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Keywords: | photonic band-gap materials macroporous electrodeposition colloidal
self-assembly |
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