| 石墨薄片弯曲度的高分辨率电子显微镜研究 |
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| 引用本文： | 王震遐,胡 均,王玟珉,俞国庆,阮美龄.石墨薄片弯曲度的高分辨率电子显微镜研究[J].物理学报,1998,47(11):1853-1857. |
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| 作者姓名： | 王震遐 胡 均 王玟珉 俞国庆 阮美龄 |
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| 作者单位： | (1)中国科学院上海硅酸盐研究所高性能陶瓷和超微结构国家重点实验室,上海 200050; (2)中国科学院上海原子核研究所，上海 201800 |
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| 摘 要： | 报道了一种用高序石墨在乙醇、水或乙醇 水混合溶液中超声波处理产生的碳样品．高分辨率电子显微镜揭示出大量具有总角度为θ0（±30℃）倍数的弯曲石墨片存在．显微镜检查表明，弯曲是通过原子晶格平面的偏转而成的．基于石墨的对称轴结构和在sp2石墨网络中类-sp3线缺陷的形成，讨论了石墨片弯曲的可能解释.
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| 关 键 词： | 石墨 弯曲度 高序石墨 TEM 原子晶格平面 |
| 收稿时间： | 1998-01-20 |
A HIGH RESOLUTION ELECTRON MICROSCOPY INVESTIGATION OF CURVATURE IN MULTILAYER GRAPHITE SHEETS |
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| WANG ZHEN-XIA,HU JUN,WANG WEN-MIN,YU GUO-QING and RUAN MEI-LING.A HIGH RESOLUTION ELECTRON MICROSCOPY INVESTIGATION OF CURVATURE IN MULTILAYER GRAPHITE SHEETS[J].Acta Physica Sinica,1998,47(11):1853-1857. |
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| Authors: | WANG ZHEN-XIA HU JUN WANG WEN-MIN YU GUO-QING and RUAN MEI-LING |
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| Abstract: | Here we report a carbon sample generated by sonicating high oriented pyrolytic graphite (HOPG) in ethanol, water or ethanol-water mixed solution. High resolution transmission electron microscopy (HRTEM) revealed many multilayer graphite sheets with a total curved angle that is multiples of θ0(=30°). Close examination of the micrographs showed that the curvature is accomplished by bending the lattice planes. A possible explanation for the curvature in multilayer graphite sheets is discussed based on the conformation of graphite symmetry axes and the formation of sp3-like line defects in the sp2 graphitic network. |
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