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y****e
发帖数: 107 | 3 http://www.freep.com/article/20090106/ENT04/901060372?imw=Y
Guarneri String Quartet call it quits after 45 charismatic years
...
The group's first violinist, Arnold Steinhardt, suggested the idea and
details were finalized in about five minutes. "Somebody had to act as
catalyst," says violist Michael Tree. "But it was unconsciously in the wind
around us."
The Guarneri String Quartet, one of the most distinguished names in
classical music, is retiring after 45 years, a remarkable run made even mo |
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c****r
发帖数: 36 | 16 【 以下文字转载自 NanoST 讨论区 】
发信人: cccyer (静化), 信区: NanoST
标 题: 请教下纳米晶的取向问题
发信站: BBS 未名空间站 (Sun Feb 14 19:46:23 2010, 美东)
有个问题，实在一个孔洞里长Pb nanocrystal（1D棒）.如下图所示，左边的那个HRTEM是
一个单晶粒，而且与晶格参数吻合得很好。右边的图显示的是一个孔中有不止一个单晶
粒的
电子衍射，可以看到几种衍射，如{200}, {-311},{2-33}等。现在的问题是，这几个取
向的晶
体是否是同一个取向呢？晶体概念有些糊涂，求教大家了。
这里Pb是立方，Fm-3m空间群，a=4.9505A.
谢谢
图的地址，不知道怎么直接贴图
http://p13.freep.cn/p.aspx?u=v20_p13_p_1002150851099117_0.jpg |
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