Interfacial reactions of Pd and Pd/Si on GaAs
文献类型：期刊论文
| 作者 | Iwakuro, H ; Tamaki, S ; Shen, DH ; Lin, ZD ; Kuroda, T |
| 刊名 | PHYSICA STATUS SOLIDI A-APPLIED RESEARCH
 |
| 出版日期 | 1997 |
| 卷号 | 164期号:2页码:757 |
| 关键词 | RAY PHOTOELECTRON-SPECTROSCOPY |
| ISSN号 | 0031-8965 |
| 通讯作者 | Iwakuro, H: Shindengen Elect Mfg Co Ltd, 10-13 Minami, Hanno, Saitama 357, Japan. |
| 中文摘要 | Single-chain single crystals of isotactic polystyrene and poly(ethylene oxide) were studied by using transmission electron microscopy, high resolution electron microscopy, electron diffraction. Single-chain single crystals were prepared by spreading a dilute solution of polymers on a water surface and collecting the resulting single-chain particles on copper grids, followed by isothermal crystallization. A statistical analysis of the sizes of single-chain crystals was found to match with the known molecular weight distribution of original sample, indicating the particles to be composed of single chain. Observation of the morphology and electron diffraction gave evidence of the single crystal nature. Regular-shaped single-chain crystals were obtained after isothermal crystallization for a longer lime. By close observation, several types of morphologies were found for single-chain crystals of isotactic polystyrene and poly(ethylene oxide); in addition to the conventional morphologies observed for multi-chain crystals, new morphologies were observed in both cases. The morphologies of poly(ethylene oxide) were explained according to the crystal structure and twin modes. Tent-like single-chain crystals were often observed. Because of the small size of the crystals, they can avoid collapse on the substrate. The crystalline c-axis of single-chain crystals were found to orient preferably in the direction normal to the substrate. The investigation of electron diffraction and high resolution electron microscopy revealed that the structure of the single-chain crystals of isotactic polystyrene is the same as far multi-chain crystals. A reasonable explanation is given for the unusual resistance to electron irradiation and the missing of lower-index reflections. Regular periodic stripes were found on the top surface of single-chain crystal of isotactic polystyrene with an average periodic length in accordance with (220) spacing. In addition, a statistical thermodynamics theory was developed for single-chain crystal. It is found that the equilibrium dimensions are related to molecular weight and annealing temperature, while the equilibrium melting temperature depends on molecular weight. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2013-09-18 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/40141]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Iwakuro, H,Tamaki, S,Shen, DH,et al. Interfacial reactions of Pd and Pd/Si on GaAs[J]. PHYSICA STATUS SOLIDI A-APPLIED RESEARCH,1997,164(2):757. |
| APA | Iwakuro, H,Tamaki, S,Shen, DH,Lin, ZD,&Kuroda, T.(1997).Interfacial reactions of Pd and Pd/Si on GaAs.PHYSICA STATUS SOLIDI A-APPLIED RESEARCH,164(2),757. |
| MLA | Iwakuro, H,et al."Interfacial reactions of Pd and Pd/Si on GaAs".PHYSICA STATUS SOLIDI A-APPLIED RESEARCH 164.2(1997):757. |
入库方式： OAI收割
来源：物理研究所
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