Waveguide-coupled bimetallic film for enhancing the sensitivity of a surface plasmon resonance sensor in a fixed-angle mode

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• 作者：Yeon Kyung Lee (1)
  Young-Soo Sohn (1)
  Kyeong-Seok Lee (2)
  Won Mok Kim (2)
  Jeong-Ok Lim (3)
  
• 关键词：Waveguide ; coupled bimetallic chip ; Surface plasmon resonance sensor ; Fixed ; angle mode
• 刊名：Journal of the Korean Physical Society
• 出版年：2013
• 出版时间：February 2013
• 年：2013
• 卷：62
• 期：3
• 页码：475-480
• 全文大小：241KB
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• 作者单位：Yeon Kyung Lee (1)
  Young-Soo Sohn (1)
  Kyeong-Seok Lee (2)
  Won Mok Kim (2)
  Jeong-Ok Lim (3)
  
  1. Department of Biomedical Engineering, Catholic University of Daegu, Gyeonsan, 712-702, Korea
  2. Electronic Material Research Center, Korean Institute of Science and Technology, Seoul, 136-791, Korea
  3. Biomedical Research Institute, Kyungpook National University School of Medicine, Deagu, 700-721, Korea
  
• ISSN：1976-8524

文摘

The characteristics of a waveguide-coupled bimetallic (WCBiM) chip for a surface plasmon resonance (SPR) sensor in a fixed-angle mode were investigated to verify sensitivity enhancement. The narrower full width at half maximum of the reflectivity curve of the WCBiM chip resulted in a dramatic change in reflectance. The configuration of the WCBiM chip consists of a multilayer stack of Ag/Zns-SiO2/Au. The SPR resolution of the WCBiM chip in the fixed mode was enhanced. At a concentration of 1 pg/ml of bovine serum albumin, the output response of the WCBiM chip was about four times larger than that of a Au chip.