Ultrahigh sensitivity fiber biosensor for C-reactive protein detection in blood sample

Qiao Gao, Dandan Wei, Yicun Yao, Bin Liu*, Juan Liu, Yingying Hu, Hong Yang, Yue Fu, Yue Zhang, Shengpeng Wan, Tao Wu, Rao Tao, Yongqing Fu, Qi Wang, Jinhui Yuan*, Xing-Dao He, Qiang Wu*

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

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    Abstract

    Accurate and rapid detection of low concentration disease biomarkers is crucial for earlier medical diagnosis. This paper reported a tapered single mode -four core- single mode (TSFCS) structure microfiber interference biosensor for detecting low concentration of C-reactive protein (CRP). The biosensor could detect CRP solution with a concentration as low as 1 pg/mL (diluted with phosphate buffered saline), with an average wavelength shift of 0.6041 nm. The wavelength shift detected by the sensor for CRP in blood was essentially the same as the shift for an approximate concentration of CRP in PBS. This indicates that the proposed TSFCS sensor may have potential applications in the fields of biomedical diagnosis.
    Original languageEnglish
    Pages (from-to)8309-8316
    Number of pages6
    JournalIEEE Sensors Journal
    Volume25
    Issue number5
    Early online date20 Jan 2025
    DOIs
    Publication statusPublished - 1 Mar 2025

    Keywords

    • fiber biosensor
    • C-reactive protein detection
    • microfiber
    • tapered fiber sensor

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