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Nanoparticle-amplifled optical interferometer biosensor toward single molecular detection
Conference paper

Nanoparticle-amplifled optical interferometer biosensor toward single molecular detection

B.Y. Shew, S.L. Wei, Y.H. Tsail, Y.C. Cheng and C.C. Fu
Proceedings of the 2nd IEEE International Conference on Nano/Micro Engineered and Molecular Systems, IEEE NEMS 2007, pp.127-130
2007

Abstract

Biosensor Nanoparticle Planar interferometer Sensitivity
This paper reports a new method using a NIR Mach-Zehnder interferometer (MZI), plus conjugated gold nanoparticle, to achieve ultra-sensitive biochemical detection. Due to the combination of interferometru: measurement, long interaction length and nanoparticle amplification, the MZI chip can detect the analyte with a equipollent concentrations of 105 molecular/ml or 10-14 g/ml, which is approaching the ultimate goal of single molecular detection. © 2007 IEEE.

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