局域表面等离子体共振LSPRppt课件.ppt
局域表面等离子体共振(Localized Surface Plasmon Resonance),内容提要,LSPR定义LSPR特点LSPR基底,表面等离子体共振,表面等离子体共振有两种模式:,传统的表面等离子体共振(PSPR),局域表面等离子体共振(LSPR),(a) surface plasmon,(b) localized surface plasmon,Willets KA, Annu. Rev. Phys. Chem. 2007, 58, 267-297,等离子体共振吸收和散射,LSPR的特点,LSPR 中的消逝波是由纳米颗粒的光散射产生的,LSPR特点,LSPR基底:金属纳米粒子,纳米粒子的SPR性质,等离子体共振吸收,金纳米粒子的生长:球形棒状,Yang PD, J. Am. Chem. Soc. 2002, 124, 14316-14317,不同纵横比的银纳米粒子,Murphy CJ, Adv. Mater. 2002, 14, 80-82,SEM of half-shell gold film (a, b), and their reflectance spectrum(c, b),洪昕,物理学报,2007,56,7219-7223,The maximum absorption wavelength of half-shell gold film effected by the surrounding media,洪昕,物理学报,2007,56,7219-7223,常用的LSPR基底,常用的LSPR基底,Vestergaard, M., Talanta, 2008, 74, 1038-42,常用的LSPR基底,Cao Z, Bioinformatics and Biomedical Engineering, 2008, 16 /18, 15961598,常用的LSPR基底,Sherry LJ, Nano Lett. 2006, 6, 20602065,谢谢大家!,