Journal of Innovative Optical Health Sciences, Volume. 7, Issue 1, 1450017(2014)

A BIOSENSOR USING COUPLED PLASMON WAVEGUIDE RESONANCE COMBINED WITH HYPERSPECTRAL FLUORESCENCE ANALYSIS

CHAN DU1,2, LE LIU3, JUN GUO1, YONGHONG HE1、*, JIHUA GUO1, SHUQING SUN1, and HUI MA1,2
Author Affiliations
  • 1Shenzhen Key Laboratory for Minimal Invasive Medical Technologies Graduate School at Shenzhen, Tsinghua University Shenzhen 518055, P. R. China
  • 2Department of Physics, Tsinghua University Beijing 100084, P. R. China
  • 3Laboratory of Advanced Power Source Graduate School at Shenzhen, Tsinghua University Shenzhen 518055, P. R. China
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    We developed a biosensor that is capable for simultaneous surface plasmon resonance (SPR) sensing and hyperspectral fluorescence analysis in this paper. A symmetrical metal-dielectric slab scheme is employed for the excitation of coupled plasmon waveguide resonance (CPWR) in the present work. Resonance between surface plasmon mode and the guided waveguide mode generates narrower full width half-maximum of the reflective curves which leads to increased precision for the determination of refractive index over conventional SPR sensors. In addition, CPWR also offers longer surface propagation depths and higher surface electric field strengths that enable the excitation of fluorescence with hyperspectral technique to maintain an appreciable signal-to-noise ratio. The refractive index information obtained from SPR sensing and the chemical properties obtained through hyperspectral fluorescence analysis confirm each other to exclude false-positive or false-negative cases. The sensor provides a comprehensive understanding of the biological events on the sensor chips.

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    CHAN DU, LE LIU, JUN GUO, YONGHONG HE, JIHUA GUO, SHUQING SUN, HUI MA. A BIOSENSOR USING COUPLED PLASMON WAVEGUIDE RESONANCE COMBINED WITH HYPERSPECTRAL FLUORESCENCE ANALYSIS[J]. Journal of Innovative Optical Health Sciences, 2014, 7(1): 1450017

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    Paper Information

    Received: May. 30, 2013

    Accepted: Sep. 11, 2013

    Published Online: Jan. 10, 2019

    The Author Email: HE YONGHONG (heyh@sz.tsinghua.edu.cn)

    DOI:10.1142/s1793545814500175

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