Optical Permittivity Of Aliphatic Alcohols, Polyethylene Glycols And Dye Solutions Using The Surface Plasmon Resonance Technique
Surface plasmon is a charge density wave that occurs at an interface between a thin metal film and dielectric medium. The most common means of excitation surface plasmon resonance is achieved through the Kretschmann configuration by utilizing the attenuated total reflection (ATR). In this study,...
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| 格式: | Thesis |
| 语言: | English English |
| 出版: |
2009
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| 主题: | |
| 在线阅读: | http://psasir.upm.edu.my/id/eprint/11964/1/FS_2009_14.pdf |
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| 总结: | Surface plasmon is a charge density wave that occurs at an interface between a thin
metal film and dielectric medium. The most common means of excitation surface
plasmon resonance is achieved through the Kretschmann configuration by utilizing the
attenuated total reflection (ATR).
In this study, gold with purity 99.99% was deposited onto glass cover slip in a form of
thin film (thickness ~ 50 nm) using sputtering technique which then coupled onto one
surface of 60° prism using index matching oil. Liquid samples used as the dielectric
medium were aliphatic alcohols; (methanol, ethanol and 1-propanol), polyethylene
glycols (PEG) series; (PEG 400, PEG 4000, PEG 1 0000 and PEG 20000) and dye
solutions; (methylene blue, rhodamine B and rhodamine 6G). The intensity of the optical reflectivity was measured as a function of incident angle at the metal and dielectric
interface. |
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