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    A THz graphene metasurface for polarization selective virus sensing.

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    Type
    Article
    Authors
    Amin, M
    Siddiqui, O
    Abutarboush, H
    Farhat, Mohamed
    Ramzan, R
    KAUST Department
    Computer, Electrical and Mathematical Science and Engineering (CEMSE) Division
    Date
    2021-02-15
    Online Publication Date
    2021-02-15
    Print Publication Date
    2021-05
    Embargo End Date
    2023-02-22
    Submitted Date
    2020-10-15
    Permanent link to this record
    http://hdl.handle.net/10754/667629
    
    Metadata
    Show full item record
    Abstract
    We propose a novel method to exploit chirality of highly sensitive graphene plasmonic metasurfaces to characterize complex refractive indexes (RI) of viruses by detecting the polarization state of the reflected electric fields in the THz spectrum. A dispersive graphene metasurface is designed to produce chiral surface currents to couple linearly polarized incident fields to circularly polarized reflected fields. The metasurface sensing sensitivity is the result of surface plasmon currents that flow in a chiral fashion with strong intensity due to the underlying geometrical resonance. Consequently, unique polarization states are observed in the far-field with the ellipticity values that change rapidly with the analyte's RI. The determination of bimolecular RI is treated as an inverse problem in which the polarization states of the virus is compared with a pre-calculated calibration model that is obtained by full-wave electromagnetic simulations. We demonstrate the polarization selective sensing method by RI discrimination of three different types of Avian Influenza (AI) viruses including H1N1, H5N2, and H9N2 is possible. Since the proposed virus characterization method only requires determination of the polarization ellipses including its orientation at monochromatic frequency, the required instrumentation is simpler compared to traditional spectroscopic methods which need a broadband frequency scan.
    Citation
    Amin, M., Siddiqui, O., Abutarboush, H., Farhat, M., & Ramzan, R. (2021). A THz graphene metasurface for polarization selective virus sensing. Carbon, 176, 580–591. doi:10.1016/j.carbon.2021.02.051
    Sponsors
    This project was supported by Deanship of Scientific Research at Taibah University under Research Grant number ENG-1.
    Publisher
    Elsevier BV
    Journal
    Carbon
    DOI
    10.1016/j.carbon.2021.02.051
    PubMed ID
    33612849
    Additional Links
    https://linkinghub.elsevier.com/retrieve/pii/S0008622321002311
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.carbon.2021.02.051
    Scopus Count
    Collections
    Articles; Computer, Electrical and Mathematical Science and Engineering (CEMSE) Division

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