物理学报Issue(3)：414-419,6.DOI:10.7498/aps.62.037805
金纳米球壳表面等离激元共振波长调谐特性研究
Tunable properties of localized surface plasmon resonance wavelength of gold nanoshell∗
摘要
Abstract
The effects of shell thickness, inner core size, and dielectric constants of core and embedding medium on the localized surface plasmon resonance wavelength of gold nanoshell are investigated by Mie theory. The results show that the extinction peak of gold nanoshell is first blue-shifted and then red-shifted with the increase of shell thickness, that the shift shell thickness corresponding to quadrupolar wavelength is greater than that corresponding to dipolar wavelength, and that the ratio of the shift shell thickness to the inner core size decreases with the increase of inner core size, and increases with the increase of dielectric constant of inner core or embedding medium. The resonance peaks in the scattering spectra have similar phenomena to those in extinction spectra as the shell thickness increases. The shift of the spectral peak is ascribed to the plasmon hybridization and phase retardation effect.关键词
金纳米球壳/局域表面等离激元共振/波长调谐Key words
gold nanoshells/plasmon resonance/wavelength tuning引用本文复制引用
张兴坊,闫昕..金纳米球壳表面等离激元共振波长调谐特性研究[J].物理学报,2013,(3):414-419,6.基金项目
国家自然科学基金(批准号:51002061,51202017)、吉林省自然科学基金(批准号:201115019,201215104)和吉林大学超硬材料国家重点实验室开放基金(批准号:201215,201110)资助的课题 （批准号:51002061,51202017）
