Journal of Sensor Science and Technology (센서학회지)

The Korean Sensors Society (한국센서학회)
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A Study on the Sensitivity of Surface Plasmon Resonance Sensor Chips with Various Material Configurations in Angle and Intensity Detection Modes

공명각 및 반사광 측정 모드에서 다양한 물질 구성의 표면 플라즈몬 공명 센서 칩의 민감도 특성

  • Sohn, Young-Soo (Department of Biomedical Engineering, Daegu Catholic Unversity)
  • 손영수 (대구가톨릭대학교 의공학과)
  • Received : 2017.11.06
  • Accepted : 2017.11.23
  • Published : 2017.11.30
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Abstract

Characteristics of various material surface plasmon resonance (SPR) chips were investigated in angular interrogation mode and intensity interrogation mode. Among five metals, silver (Ag), gold (Au), copper (Cu), chromium (Cr) and titanium (Ti), three metals, Ag, Au and Cu were paid attention to since their characteristics can be easily analyzed in angular interrogation mode by investigating the change of their reflectance curves according to refractive index change from 1.331 to 1.335. Most of SPR chips with various configurations showed the similar property in angular interrogation mode. The application of the SPR chip made of Ag, Au and Cu or their combinations depends on their reflectance properties. In intensity interrogation mode, the operation range may be limited since the variation of the intensity was not linearly related to refractive index change ranging from 1.331 to 1.335. However, the SPR chip containing high ratio of Ag may be applicable to high sensitive detection due to their sharp reflectance curves in intensity interrogation mode.

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References

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