| 薄膜表面的分形特征 |
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| 引用本文： | 汤晓明,魏赛珍,毛祖遂,李海洋,陈晓峰,郑永铭.薄膜表面的分形特征[J].物理化学学报,1999,15(5):403-406. |
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| 作者姓名： | 汤晓明 魏赛珍 毛祖遂 李海洋 陈晓峰 郑永铭 |
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| 作者单位： | Physics Department,Zhejiang University,Hangzhou 310027,Plasma Physics Laboratory of High Temperature and High Density,Chengdu 610003 |
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| 基金项目： | 国家自然科学基金，高温高密度等离子体物理实验室资助 |
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| 摘 要： | 在计算机上用随机数相加的方法产生了一个分形表面，对这个表面的模拟测量表明，z方向分辨率变化对分形维数测量结果影响很小，x、y方向分辨率降低时会导致测量结果统计误差增大用扫描隧道显微镜（STM）测量了沉积在三种不同基底上的Au膜的分形维数．测得Au／陶瓷的分形维数D＝2.15，Au／光学玻璃的分形维数D＝2.06．Au／载玻片上各点的分形维数较不一致．同时讨论了多图方法中各单图曲线之间不衔接的原因．
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| 关 键 词： | 分形维数 薄膜表面 扫描隧道显微镜 计算机模拟 分辨率 |
| 收稿时间： | 1998-08-05 |
| 修稿时间： | 1998-09-24 |
Fractal Characteristics of Film Surface |
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| Tang Xiaoming,Wei Saizhen,Mao Zusui, Li Haiyang, Chen Xiaofeng,Zheng Yongming.Fractal Characteristics of Film Surface[J].Acta Physico-Chimica Sinica,1999,15(5):403-406. |
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| Authors: | Tang Xiaoming Wei Saizhen Mao Zusui Li Haiyang Chen Xiaofeng Zheng Yongming |
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| Institution: | Physics Department,Zhejiang University,Hangzhou 310027|Plasma Physics Laboratory of High Temperature and High Density,Chengdu 610003 |
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| Abstract: | A fractal surface was generated on computer by random addition method. The simulated measurement on this surface shows that z resolution has little effect on calculating fractal dimension D while the lower x y resolution causes larger statistic error. D was calculated for Au films on three kind of substfate using data from Scanning Tunneling Microscope(STM) images. D = 2. 15 for Au/ceramic, and D = 2. 06 for Au/optical glass. D has different values for different points on Au/general glass, the reason of mismatch between curves from STM images of different scan sizes was also discussed. |
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| Keywords: | Fractal dimension Film surface STM Computer simulation Resolution |
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