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Applied Biochemistry and Biotechnology

, Volume 41, Issue 1–2, pp 59–66 | Cite as

Highly sensitive immunosensor with a surface photovoltage technique

  • Teruaki Katsube
Article

Conclusion

An ac surface photo voltage technique was successfully applied to construct a highly sensitive immuno-sensor by reducing the ion screening effect. A low noise amplification was attained by using a phase sensitive amplification technique, which made it possible to use low-ion density electrolyte leading to suppress the ion screening effect. The response voltage attained was as high as 7 mV for the detection of 10−8 M IgG antigen with a signal-to-noise ratio of 104.

Keywords

Apply Biochemistry Surface Charge Density Response Voltage Surface Photovoltage Surface Voltage 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. 1.
    Uchida, H., Maekawa, H., Katsube, T., Kawaguachi, T., and Shiro, T. (1990),Sensors and Materials,2,3, 137–146.Google Scholar
  2. 2.
    Katsube, T. and Uchida, H. (1990),Proc. 1st World Wide Conf. Biosensors (Shingapor) 170.Google Scholar
  3. 3.
    Hafeman, D. G., Parce, J. W., and McConnell, H. M. (1988),Science 240, 1182.CrossRefGoogle Scholar

Copyright information

© Humana Press Inc 1993

Authors and Affiliations

  • Teruaki Katsube
    • 1
  1. 1.Faculty of EngineeringSaitama UniversityUrawa, SaitamaJapan

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