Novel Photonic Crystals: Incorporation of Nano-CdS into the Natural Photonic Crystals within Peacock Feathers

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• 作者：Jie Han^† ; ; Huilan Su*^† ; ; Fang Song^† ; ; Jiajun Gu^† ; ; Di Zhang*^† ; ; Limin Jiang^‡ ;
• 刊名：Langmuir
• 出版年：2009
• 出版时间：March 3, 2009
• 年：2009
• 卷：25
• 期：5
• 页码：3207-3211
• 全文大小：246K
• 年卷期：v.25,no.5(March 3, 2009)
• ISSN：1520-5827

文摘

In this investigation, the natural 2D photonic crystals (PhCs) within peacock feathers are applied to incorporate CdS nanocrystallites. Peacock feathers are activated by ethylenediaminetetraacetic/dimethylformamide suspension to increase the reactive sites on the keratin component, on which CdS nanoparticles (nano-CdS) are in situ formed in succession and serve as the “seeds” to direct further incorporation during the following solvothermal procedure. Thus, homogeneous nano-CdS are loaded both on the feathers’ surface layer and inside the 2D PhCs. The obtained nano-CdS/peacock feathers hybrids are novel photonic crystals whose photonic stop bands are markedly different from that of the natural PhCs within original peacock feathers, as observed by the reflection spectra.