Positron beam characterization of silica thin films with structurally ordered porosity
文献类型：期刊论文
| 作者 | Yu, R.S.; Qin, X.B.; Wang, Q.Z.; Zhang, Z.; Zhong, Y.R.; Li, Z.X.; Wang, B.Y.; Wei, L.; Jia, Q.J.; Kurihara, T. |
| 刊名 | Materials Science Forum
 |
| 出版日期 | 2009 |
| 卷号 | 607页码:99-101 |
| 关键词 | Positron annihilation Positronium Positron beam Porous films |
| ISSN号 | 0255-5476 |
| DOI | 10.4028/www.scientific.net/MSF.607.99 |
| 文献子类 | 会议 |
| 英文摘要 | Well-ordered 2-dimensional (2D) hexagonal and 3-dimensional (3D) cubic mesoporous silicon oxide thin films prepared using triblock Poly(ethylene oxide)-Poly(Propylene oxide)-Poly(ethylene oxide) copolymer species (PI23, F127) as the structure-directing agents, are studied by positron beam analysis in parallel with X-ray reflection measurements. It is observed that in the two films with equivalent porosity and pore size (normal to the film surface direction), the shape of mesopores considerably affects positron annihilation behavior. The narrowed positron annihilation Doppler broadening in the 2D hexagonal mesoporous film may suggest a higher positronium formation probability there, owing to a larger effective open volume area originated from the extension of pore channels parallel to the film substrate. © (2009) Trans Tech Publications, Switzerland. |
| 会议地点 | May 11, 2008 - May 15, 2008 |
| 电子版国际标准刊号 | 16629752 |
| WOS研究方向 | Materials Science ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000264749800026 |
| 源URL | [https://ir.ihep.ac.cn/handle/311005/304384]  |
| 专题 | 高能物理研究所_多学科研究中心 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Yu, R.S.,Qin, X.B.,Wang, Q.Z.,et al. Positron beam characterization of silica thin films with structurally ordered porosity[J]. Materials Science Forum,2009,607:99-101. |
| APA | Yu, R.S..,Qin, X.B..,Wang, Q.Z..,Zhang, Z..,Zhong, Y.R..,...&Kurihara, T..(2009).Positron beam characterization of silica thin films with structurally ordered porosity.Materials Science Forum,607,99-101. |
| MLA | Yu, R.S.,et al."Positron beam characterization of silica thin films with structurally ordered porosity".Materials Science Forum 607(2009):99-101. |
入库方式： OAI收割
来源：高能物理研究所
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