A Surface Plasmon Resonance Study of Ag Nanoparticles in an Aqueous Solution
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概要
- 論文の詳細を見る
A novel method of detecting the concentration of Ag nanoparticles in an aqueous solution using surface plasmon resonance (SPR) reflectivity is reported. The laser ablation method was used to produce nanoparticles which were characterized using a transmission electron microscope (TEM) and ultraviolet-visible spectrometer. The particles had an average diameter of approximately 5 nm with an absorption peak at about 405 nm. A "Kretschmann" configuration surface plasmon resonance sensor revealed that SPR angle decreases with the relative concentration of the Ag nanoparticles. The SPR angle was shifted by about 0.14° from the theoretical simulation results. The dielectric constant of an aqueous solution with the maximum concentration of Ag nanoparticles was about 1.8167 and the refractive index of the solution was 1.3478.
- Japan Society of Applied Physicsの論文
- 2004-02-01
著者
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Su Wen-kuan
Department Of Applied Physics Chung-cheng Institute Of Technology
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Chen Tzu-Chiang
Department of Electronic Engineering, Chung Cheng Institute of Technology, National Defense University, Tahsi, Taoyuan 33509, Taiwan, R. O. C.
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Chen Tzu-Chiang
Department of Electronic Engineering, Chung Cheng Institute of Technology, National Defense University, Tahsi, Taoyuan 33509, Taiwan, R.O.C.
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Lin Yao-Leng
Department of Electronic Engineering, Chung Cheng Institute of Technology, National Defense University, Tahsi, Taoyuan 33509, Taiwan, R.O.C.
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