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[求助]
關于貴金屬的等離子體共振 已有4人參與
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| 想問下,所謂貴金屬的等離子共振,是所有的貴金屬都有等離子共振嗎?為什么討論最多的等離子體共振都是Au,Ag的呢?跪求解答,小的不勝感激! |
SPR表面等離子體共振 | 人形圖書館 | 有機合成 | 光學 |
木蟲 (小有名氣)
專家顧問 (著名寫手)
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專家經(jīng)驗: +208 |
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看看這篇文章,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. |

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