State Key Laboratory of Physical Chemistry of Solid Surfaces, and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, China.
Colloids Surf B Biointerfaces. 2010 Mar 1;76(1):117-22. doi: 10.1016/j.colsurfb.2009.10.023. Epub 2009 Oct 23.
Using a patterned superhydrophobicity/superhydrophilicity template, micropatterned octacalcium phosphate (OCP) has been successfully fabricated on TiO(2) nanotube array surface. The resultant OCP micropattern has been characterized with scanning electron microscopy, optical microscopy, X-ray diffraction and electron probe microanalyzer. It is shown that the ribbon-like OCP crystals possess a highly ordered and hierarchically porous structure at nano-micro-scales. They can be selectively grown at superhydrophilic areas which are confined by the hydrophobic regions. The high wetting contrast template proves to be useful for constructing well-defined dual scale OCP film with porous structure biomimic to natural bone. A mechanism has been proposed to explain the formation of the OCP patterned film with hierarchically porous structure and distinct selectivity.
采用图案化超疏水/超亲水模板，成功地在 TiO2 纳米管阵列表面制备了微图案化的八钙磷灰石（OCP）。利用扫描电子显微镜、光学显微镜、X 射线衍射和电子探针微分析仪对所得 OCP 微图案进行了表征。结果表明，带状 OCP 晶体在纳米-微尺度上具有高度有序和分级多孔结构。它们可以在被疏水区域限制的超亲水区域选择性地生长。高润湿对比度模板被证明是用于构建具有类似于天然骨的多孔结构的明确定义的双尺度 OCP 薄膜的有用方法。提出了一种机制来解释具有分级多孔结构和明显选择性的 OCP 图案化薄膜的形成。
