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水浴法合成ZnO纳米线薄膜的工艺参数直接影响其表面形貌,并使其接触角及润湿性能发生变化.本文仿真分析了轮廓算数平均偏差、偏斜度、峭度、相关长度等特征参数对随机粗糙表面特性的影响规律;改变生长时间、种子层溶液和生长液的浓度,批量制备了表面形貌不同的ZnO纳米线薄膜;提出了取样长度的确定方法,并基于扫描电镜图像和Matlab图像处理算子对ZnO纳米线薄膜表面形貌的特征参数进行了提取;将表面形貌高度和水平方向的特征参数引入Wenzel模型,分析了合成参数、表面形貌特征参数与接触角的影响关系.结果表明,合成参数变化时,选择取样长度5.0μm为宜;生长液浓度大于0.125 mol/L时,ZnO纳米线之间发生重结晶,并呈现疏水性;改变种子层溶液浓度和生长时间,均得到超亲水表面.上述结论可用于不同氧化酶、细胞等在ZnO纳米线薄膜上的有效吸附及相应传感器测试性能的进一步提高.
The process parameters of ZnO nanowire films synthesized by water bath method directly affect the surface morphology and change the contact angle and wettability.The simulation parameters such as mean deviation, skewness, kurtosis, correlation length and so on On the random rough surface characteristics; changing the growth time, seed layer solution and growth solution concentration, bulk preparation of the ZnO nanowire thin films with different surface morphology; proposed sampling length determination method, and based on scanning electron microscopy images and Matlab The image processing operator extracted the characteristic parameters of the ZnO nanowire surface morphology. By introducing the feature parameters of the surface topography and the horizontal direction into the Wenzel model, the influence of the synthesis parameters, surface morphology parameters and contact angle The results show that when the synthesis parameters are changed, the sample length of 5.0μm is appropriate. When the concentration of the solution is more than 0.125 mol / L, the ZnO nanowires recrystallize and exhibit hydrophobicity. The solution concentration and growth time of the seed layer are changed, Were obtained superhydrophilic surface.The above conclusions can be used for different oxidases, cells and other ZnO nanowire film in the effective adsorption and the corresponding sensing Test performance of the device to further improve.