A Surface Plasmon Resonance Study of Ag Nanoparticles in an Aqueous Solution

Tzu-Chiang CHEN; Wen-Kuan Su; Yao-Leng LIN

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A Surface Plasmon Resonance Study of Ag Nanoparticles in an Aqueous Solution

机译：纳米银在水溶液中的表面等离子体共振研究

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摘要

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.

机译：报道了一种使用表面等离子体共振（SPR）反射率检测水溶液中Ag纳米颗粒浓度的新方法。激光烧蚀法用于生产纳米颗粒，使用透射电子显微镜（TEM）和紫外可见光谱仪对其进行表征。颗粒的平均直径为约5nm，吸收峰为约405nm。 “ Kretschmann”配置的表面等离子体共振传感器表明，SPR角随Ag纳米颗粒的相对浓度而减小。 SPR角从理论模拟结果偏移了约0.14°。具有最大浓度的Ag纳米颗粒的水溶液的介电常数约为1.8167，溶液的折射率为1.3478。

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来源
《Japanese Journal of Applied Physics. Part 1, Regular Papers & Short Notes》 |2004年第2a期|p.L119-L122|共4页
作者
Tzu-Chiang CHEN; Wen-Kuan Su; Yao-Leng LIN;
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作者单位

Department of Electronic Engineering, Chung Cheng Institute of Technology, National Defense University, Tahsi, Taoyuan 33509, Taiwan, R.O.C.;

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原文格式 PDF
正文语种 eng
中图分类应用物理学;
关键词
nanoparticles; laser ablation; surfactant; absorption spectrum; surface plasmon resonance;

机译：纳米粒子;激光烧蚀;表面活性剂;吸收光谱;表面等离子体共振;

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4. Studies of silver nanoparticles in aqueous solution by surface plasmon resonance [C] . Tzu-Chiang Chen, Yao-Leng Lin, Wen-Kuan Su, . 2003

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A Surface Plasmon Resonance Study of Ag Nanoparticles in an Aqueous Solution

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