CAJ | 학술논문

采用溶胶-凝胶法制备了ZnO薄膜,利用溶剂热沉积法获得大面积均匀ZnO纳米线阵列。通过对水在ZnO材料表面的浸润性研究,发现薄膜材料表面的粗糙度对ZnO膜亲水性有增强作用,而周期性ZnO阵列微结构表面可以实现其疏水性质增强效果。同时从理论上分析了这两种现象的物理机制,讨论了空气填隙对ZnO纳米线阵列表面的浸润性质的敏感性。制备出ZnO纳米线阵列的表观接触角约为103°,具有较强的疏水性质,可为进一步的ZnO光流控研究提供实验基础。
채용용효-응효법제비료ZnO박막,이용용제열침적법획득대면적균균ZnO납미선진렬。통과대수재ZnO재료표면적침윤성연구,발현박막재료표면적조조도대ZnO막친수성유증강작용,이주기성ZnO진렬미결구표면가이실현기소수성질증강효과。동시종이론상분석료저량충현상적물리궤제,토론료공기전극대ZnO납미선진렬표면적침윤성질적민감성。제비출ZnO납미선진렬적표관접촉각약위103°,구유교강적소수성질,가위진일보적ZnO광류공연구제공실험기출。
The ZnO film and vertical nanowire array on the glass and silicon substrates were synthesized successfully using sol-gel method. The wetability of the ZnO films and ZnO nano arrays were investigated, which showed the enhancement of the hydrophilic nature of the ZnO films by slight roughness of nanoparticles dispers ed, whereas hydrophobic surfaces are obtained induced by the vertical nanowire arrays. A theoretical discussion about the possibility of the air bubble trapping between two vertical nanowires was devoted to the hydrophobicity of the ZnO nanowire array. Additionally, a delicate electrostatic force microscopy was utilized to analyze the charge effect on the wetting characteristics of the ZnO nanowire array, presenting the consistent result of negative surface charge on the top of the nanowires. Our founding will be helpful to understand the electro-wetting and opto-wetting properties of ZnO nanostructured materials.