金屬介電核殼結構復合納米顆粒因其獨特的結構而具有許多奇異的性質,尤其表現在表面等離子體共振特性上。通過改變金屬納米顆粒的大小和核殼的相對尺寸,可實現光學共振在很寬波段內的可調特性。這一特性不僅在光子學,而且在生物光子學、生物醫學等領域都有廣泛的應用前景。本文介紹了幾種金屬介電核殼結構納米顆粒的制備、性質及其應用。
關鍵詞　金屬介電核殼結構　復合納米顆粒　表面等離子體共振

Abstract 　Due to the unique structure , core2shell structure composite nanoparticles , which consist of a dielectric core coated with a nanometer scale metallic shell , have many unusual properties , especially the properties of surface plasmon resonance. By varying the size of metal nanoparticles and the relative dimensions of the core and shell , the optical resonance of these nanoparticles can be regulated in a broad spectral range. The preparation , properties and applications of various types of metallodielectric core2shell structure composite nanoparticles are reviewed in this article.
Key words 　metallodielectric core2shell structures ; composite nanoparticles ; surface plasmon resonance