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Biological reaction signal enhancement in porous silicon Bragg mirror based on quantum dots fluorescence
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1.School of Physical Science and Technology, Xinjiang University, Urumqi 830046, China;2.School of Information Science and Engineering, Xinjiang University, Urumqi 830046, China

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    Abstract:

    In this paper, we mainly study the preparation of an optical biosensor based on porous silicon (PSi) Bragg mirror and its feasibility for biological detection. The quantum dot (QD) labeled biotin was pipetted onto streptavidin functionalized PSi Bragg mirror samples, the affinity reaction between QD labeled biotin and streptavidin in PSi occurred, so the QDs were indirectly connected to the PSi. The fluorescence of QD enhanced the signal of biological reactions in PSi. The performance of the sensor is verified by detecting the fluorescence of the QD in PSi. Due to the fluorescence intensity of the QDs can be enhanced by PSi Bragg mirror, the sensitivity of the PSi optical biosensor will be improved.

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LI Yan-yu, JIA Zhen-hong, WANG Jia-jia, Lü Chang-wu. Biological reaction signal enhancement in porous silicon Bragg mirror based on quantum dots fluorescence[J]. Optoelectronics Letters,2017,13(3):172-174

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History
  • Received:February 18,2017
  • Online: September 29,2017
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