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piaopiao1008

金虫 (正式写手)

[求助] 关于贵金属的等离子体共振 已有4人参与

想问下,所谓贵金属的等离子共振,是所有的贵金属都有等离子共振吗?为什么讨论最多的等离子体共振都是Au,Ag的呢?跪求解答,小的不胜感激!
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piaopiao1008

金虫 (正式写手)

送红花一朵
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3楼: Originally posted by vsicbc at 2015-09-07 15:29:35
等离子共振源于小尺寸效应,当电子云震荡遇到边界的时候发生共振。可想而知,大体上,金属颗粒越小,越容易发生共振,同时激发波长蓝移。

共振发生的难易还和金属材料介电函数有关,想从理论上对比不同金属材料激 ...

楼主能把全文链接发给我一下么,谢谢
5楼2015-09-08 11:26:22
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nanofellow

专家顾问 (著名写手)

【答案】应助回帖

感谢参与,应助指数 +1
看看这篇文章,你基本上迎刃而解。
Liz-Marzan LM: Tailoring surface plasmons through the morphology and assembly of metal nanoparticles. Langmuir 2006, 22:32-41.

Abstract:Metal nanoparticles can be used as building blocks for the formation of nanostructured materials. For the design
of materials with specific (optical) properties, several approaches can be followed, even when starting from the very
same basic units. In this article, a survey is provided of the optical properties of noble metal nanoparticles, specifically
gold, silver, and their combinations, prepared in solution through colloid chemical methods. The optical properties
are shown to be mainly influenced by the surface plasmon resonance of conduction electrons, the frequency of which
is not only determined by the nature of the metal but also by a number of other parameters, such as particle size and
shape, the presence of a capping shell on the particle surface, or the dielectric properties of the surrounding medium.
Recent results showing how these various parameters affect the optical properties are reviewed. The results highlight
the high degree of control that can now be achieved through colloid chemical synthesis.
想成为JACS的作者,坚持!
2楼2015-09-07 15:21:07
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vsicbc

禁虫 (正式写手)

感谢参与,应助指数 +1
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3楼2015-09-07 15:29:35
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匿名

木虫 (小有名气)

感谢参与,应助指数 +1
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4楼2015-09-07 18:57:43
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