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mixiao777

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[求助] 碳纳米管的光激发光发射强度 photoluminescence emission intensities

在看一篇碳纳米管的文献,里面有这样的一副图,图标是“Contour plots of normalized
photoluminescence emission intensities under various excitations for the Fe–Ru SWCNTs grown at various temperatures”,实在是看不懂什么意思,这个图有什么意义?并且文中还说“The FeRu catalyst system facilitated the growth of small-diameter SWCNTs with predominantly of (6, 5)SWCNTs. ”其中(6,5)是啥意思呀,坐标?指的是图中的那个点嘛?求高手解答一下~~

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mixiao777

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送鲜花一朵
引用回帖:
6楼: Originally posted by alexanderp at 2012-11-13 16:21:55
就是光致荧光谱(photoluminescence excitation-emission spectroscopy).谱线分析,参考以下文献,类似特征峰位表。
1)S. M. Bachilo, M. S. Strano, C. Kittrell, R. H. Hauge, R. E. Smalley, and R. B. Weisma ...

恩,好的~谢谢谢谢~
8楼2012-11-13 16:40:03
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sally208

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mixiao777: 金币+3, ★★★很有帮助, 受益~ 2012-11-13 16:40:48
http://en.wikipedia.org/wiki/Carbon_nanotube

... The structure of a SWNT can be conceptualized by wrapping a one-atom-thick layer of graphite called graphene into a seamless cylinder. The way the graphene sheet is wrapped is represented by a pair of indices (n,m). The integers n and m denote the number of unit vectors along two directions in the honeycomb crystal lattice of graphene. If m = 0, the nanotubes are called zigzag nanotubes, and if n = m, the nanotubes are called armchair nanotubes. Otherwise, they are called chiral. The diameter of an ideal nanotube can be calculated from its (n,m) indices as follows
......
2楼2012-11-12 18:36:29
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alexanderp

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mixiao777: 金币+2, ★★★很有帮助, 受益~ 2012-11-13 16:41:08
三幅图是不同CVD温度下生长的碳管,在测试PL时,得到的信号强度,也就是激励-发射谱,激励从550nm扫描到850nm, 谱仪检测从900nm-1450
nm的发射光子。
Fe-Ru二元催化剂,有利于(6,5)手性碳纳米管的生长,对应的PL 谱位置坐标为(983,567)。

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3楼2012-11-12 22:55:05
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mixiao777

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2楼: Originally posted by sally208 at 2012-11-12 18:36:29
http://en.wikipedia.org/wiki/Carbon_nanotube

... The structure of a SWNT can be conceptualized by wrapping a one-atom-thick layer of graphite called graphene into a seamless cylinder. The way the  ...

这个n,m怎么测得呢?比如说我合成一个样品,怎样得到他的(n,m),是用什么仪器嘛?
4楼2012-11-13 10:17:59
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