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研究了紫外激光辐照对ZrO2、ZnO、和SrTiO33种功能非金属氧化物单晶表面浸润性影响的规律,结果表明:经过准分子激光辐照后,ZnO与SrTiO3单晶表面先亲水,最后稳定在疏水状态,而ZrO2呈现单一的超疏水性能。分析表明,激光辐照诱导的表面粗糙突起结构是导致材料表面疏水的决定性因素,而表面化学成分的变化对其影响较小。此外,采用325nm连续激光辐照也可实现ZnO和SrTiO3单晶表面光致亲水效应,这是由于辐照表面产生的缺陷位更容易吸附水分子中羟基基团,导致表面亲水。
The influence of UV laser irradiation on the surface wettability of 33 kinds of ZrO2, ZnO and SrTiO3 functional nonmetal oxide single crystals was studied. The results showed that the surface of ZnO and SrTiO3 single crystal was hydrophilic first after the excimer laser irradiation, and finally Stable in the hydrophobic state, and ZrO2 showed a single superhydrophobic properties. The analysis shows that the structure of rough surface induced by laser irradiation is the decisive factor leading to the hydrophobicity of the surface of the material, while the change of surface chemical composition has little effect on it. In addition, photoluminescence of ZnO and SrTiO3 single crystals can also be achieved by continuous laser irradiation at 325nm, which is due to the adsorption of hydroxyl groups in the water molecules by the defect sites on the irradiated surface, resulting in the hydrophilicity of the surface.