Plasmon-Modulated Light Scattering from Gold Nanocrystal-Decorated Hollow Mesoporous Silica Microspheres
Publication in refereed journal

香港中文大學研究人員

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摘要Localized surface plasmon resonances of noble nanocrystals are powerful in enhancing a variety of linear and nonlinear optical signals and photorelated processes. Here demonstrate the plasmonic enhancement of the light scattering from hollow mesoporous silica microspheres by attaching a dense layer of gold nanocrystals onto the outer surface of the microspheres. The attachment of gold nanocrystals induces both the shift and intensity increase in the resonant scattering peaks of the nanospheres. The spectral region of the resonant scattering enhancement can be controlled by using gold nanocrystals with different plasmon resonance wavelengths. The spectral region of the enhancement is independent of the microsphere diameter. The scattering enhancement factor ranges from 20 to 130, depending on the plasmonic properties and surface coverage of the attached gold nanocrystals. The systematic evolution the scattering spectra of the individual microsphere is also revealed by chemically etching away the attached gold nanocrystals gradually
著者Xiao MD, Chen HJ, Ming TA, Shao L, Wang JF
期刊名稱ACS Nano
出版年份2010
月份11
日期1
卷號4
期次11
出版社American Chemical Society
頁次6565 - 6572
國際標準期刊號1936-0851
電子國際標準期刊號1936-086X
語言英式英語
關鍵詞gold nanorods; hollow microspheres; mesoporous silica; plasmon resonance; scattering
Web of Science 學科類別Chemistry; Chemistry, Multidisciplinary; CHEMISTRY, MULTIDISCIPLINARY; Chemistry, Physical; CHEMISTRY, PHYSICAL; Materials Science; Materials Science, Multidisciplinary; MATERIALS SCIENCE, MULTIDISCIPLINARY; Nanoscience & Nanotechnology; NANOSCIENCE & NANOTECHNOLOGY; Science & Technology - Other Topics

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