| 电子束诱导玻璃纳米须生长的原位电镜观察 |
| |
| 引用本文： | 周固,张通和,张旭.电子束诱导玻璃纳米须生长的原位电镜观察[J].北京师范大学学报(自然科学版),2002,38(4):481-485. |
| |
| 作者姓名： | 周固 张通和 张旭 |
| |
| 作者单位： | 1. 北京师范大学分析测试中心;2. 北京师范大学射线束技术和材料改性教育部重点实验室,低能核物理所:100875,北京 |
| |
| 基金项目： | 国家自然科学基金;50141022; |
| |
| 摘 要： | 在高能电子束辐照下,玻璃表面首先形成突起,在以后的辐照下以扩散限制凝聚的形式在无序态突起上生长出长度在十几到几百nm的树枝状玻璃纳米须,并沿玻璃法线方向生长.这一电子束诱导现象主要是由于照射部位的温升造成的,玻璃纳米须的长度和生长速度与辐照时间密切相关.辐照时间增加生长速度加快,在辐照23min左右时生长速度最快.整体形貌也随辐照时间而改变,玻璃纳米须从高低不平到高度整齐,从局部到整个面积均匀分布.
|
| 关 键 词： | 玻璃纳米须 分形 高能电子束辐照 透射电镜原位观察 |
| 修稿时间： | 2002年3月8日 |
IN-SITU TEM OBSERVATION ON GROWTH OF GLASS NANORODS INDUCED BY ELECTRON BEAM |
| |
| Zhou Gu,Zhang Tonghe,Zhang Xu.IN-SITU TEM OBSERVATION ON GROWTH OF GLASS NANORODS INDUCED BY ELECTRON BEAM[J].Journal of Beijing Normal University(Natural Science),2002,38(4):481-485. |
| |
| Authors: | Zhou Gu Zhang Tonghe Zhang Xu |
| |
| Institution: | Zhou Gu 1) Zhang Tonghe 2) Zhang Xu 2) |
| |
| Abstract: | Fractal theory has been developed in many fields since it was first presented in 1970s, especially fractal theory is applied in the research about nonlinear process of off equilibrium state. The scientists of our country have observed the fractal growth of gas phase solid phase transition of hydrocarbon under high energy electron beam irradiation. The growth process of glass nanorods induced by electron beam is discussed more profoundly and systematically. The growth rules of glass nanorods are found. The longer the time of electron beam irradiation, the larger the length and density of glass nanorods. The velocity of growth of glass nanorods has a maximum value at 23 min. The growth mechanism of glass nanorods is discussed. |
| |
| Keywords: | glass nanorods fractal high energy electron beam irradiation TEM in situ observation |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
