| 偏振激光诱导的薄膜表面周期性自组织结构 |
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| 引用本文： | 于威. 偏振激光诱导的薄膜表面周期性自组织结构[J]. 上海电力学院学报, 2010, 0(5) |
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| 作者姓名： | 于威 |
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| 作者单位： | 河北大学物理科学与技术学院; |
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| 基金项目： | 国家自然科学基金资助项目(60878040); 河北省自然科学基金资助项目(E2009000208) |
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| 摘 要： | 本文研究了激光诱导的周期性表面结构(LIPSS)在聚甲基丙烯酸甲酯(PMMA)薄膜表面的形成过程。在导电玻璃衬底上制备得到PMMA薄膜,经p偏振的XeCl准分子激光照射后形成周期性的褶皱结构。用原子力显微镜(AFM)观察发现,形成的褶皱结构周期具有纳米量级,且当引入外加电场时,褶皱形成所需的激光脉冲数减少到2。当外加电压增加到30V时,褶皱的周期间隔明显减小,LIPSS变得不可控,出现了柱状的自组织结构。与直接用准分子激光照射的薄膜样品相比,外加辅助电压的引入改变了PMMA样品表面褶皱结构形成的时间和周期大小,褶皱形成的内部驱动力也发生了变化。
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| 关 键 词： | 激光诱导的周期性表面结构(LIPSS) 褶皱 聚甲基丙烯酸甲酯(PMMA) XeCl准分子激光 形貌 |
Polarized laser-induced self-assembled periodic structure on film surface |
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| YU Wei. Polarized laser-induced self-assembled periodic structure on film surface[J]. Journal of Shanghai University of Electric Power, 2010, 0(5) |
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| Authors: | YU Wei |
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| Affiliation: | College of Physics Science , Technology,Hebei University,Baoding 071002,China |
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| Abstract: | The formation process of laser induced periodic surface structure(LIPSS) on polymethylmethacrylate(PMMA) is investigated.The PMMA film is prepared on an indium tin oxide wafer and irradiated with a p-polarized XeCl excimer laser (15 ns,308 nm),assisted with an external electric field.The characteristics of the surface corrugations are determined by an atomic force microscopy.It is found that the corrugation spacing of nanometer scale can be achieved and remarkably decreased by changing the applied voltage f... |
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| Keywords: | laser induced periodic surface structure(LIPSS) corrugation polymethylmethacrylate(PMMA) XeCl morphology |
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