| Pd沉积在聚乙烯醇缩甲醛衬底上分形结构研究 |
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| 引用本文： | 魏赛珍,毛祖遂,汪雷,陈晓峰,郑永铭. Pd沉积在聚乙烯醇缩甲醛衬底上分形结构研究[J]. 物理化学学报, 1997, 13(3): 218-223. DOI: 10.3866/PKU.WHXB19970307 |
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| 作者姓名： | 魏赛珍 毛祖遂 汪雷 陈晓峰 郑永铭 |
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| 作者单位： | Department of Physics,Zhejiang University,Hangzhou 310027,Plasma Physics Laboratory of High Temperature and High Density,Chengdu 610003 |
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| 基金项目： | 高温高密度等离子体物理实验室资助 |
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| 摘 要： | 用透射电子显微镜（ＴＥＭ）研究了衬底和沉积速率对气相沉积在聚乙烯醇缩甲醛衬底上的Ｐｄ膜显微结构的影响，当衬底温度由高到低改变时，Ｐｄ膜结构由紧密岛向分形渐变，在２３３－２５３Ｋ时Ｐｄ膜具有分形结构，用Ｓａｎｄｂｏｘ方法测量了其分维数，在相同温度的衬底上，沉积速率不同时，基分形的图样不同，研究表明，上述分形结构是稳定的，利用有边缘扩散的ＤＬＡ模型了这些实验结果。
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| 关 键 词： | 分形结构 Pd膜 低温 聚乙烯醇缩甲醛 |
| 收稿时间： | 1996-09-10 |
| 修稿时间： | 1996-11-18 |
The Fractal Structure Investigation of Pd Film Deposited on Polyvinyl Formal |
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| Wei Saizhen Mao Zusui Wang Lei Chen Xiaofeng Zheng Yongming. The Fractal Structure Investigation of Pd Film Deposited on Polyvinyl Formal[J]. Acta Physico-Chimica Sinica, 1997, 13(3): 218-223. DOI: 10.3866/PKU.WHXB19970307 |
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| Authors: | Wei Saizhen Mao Zusui Wang Lei Chen Xiaofeng Zheng Yongming |
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| Affiliation: | Department of Physics,Zhejiang University,Hangzhou 310027|Plasma Physics Laboratory of High Temperature and High Density,Chengdu 610003 |
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| Abstract: | The influence of substrate temperature and of deposition rate upon microstructure of Pd film deposited on Polyvinyl Formale (PVF) has been investigated using TEM. Transition from compact islands to fractal structures has been observed when substrate ternperature decreased.The fractal structure appeared at 233-253K. The fractal dimension was measured using the Sand-box method. The fractal patterns of Pd film on PVF at the same temperature varied with changing deposition rate. These fractal structures ar6 stable. The experimental results have been discussed using DLA(Diffusion -Limited-Aggregation) model with active edge diffusion. |
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| Keywords: | Fractal structure Pd film Low temperature Polyvinyl formale |
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