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Wiley, Advanced Materials, 40(27), p. 6163-6169, 2015

DOI: 10.1002/adma.201501754

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Graphene–Gold Metasurface Architectures for Ultrasensitive Plasmonic Biosensing

Journal article published in 2015 by Shuwen Zeng, Kandammathe Valiyaveedu Sreekanth, Jingzhi Shang ORCID, Ting Yu, Chih-Kuang Chen, Feng Yin, Dominique Baillargeat, Philippe Coquet, Ho-Pui Ho, Andrei V. Kabashin, Ken-Tye Yong
This paper is available in a repository.
This paper is available in a repository.

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Abstract

Graphene-gold metasurface architectures that can provide significant gains in plasmonic detection sensitivity for trace-amount target analytes are reported. Benefiting from extreme phase singularities of reflected light induced by strong plasmon-mediated energy confinements, the metasurface demonstrates a much-improved sensitivity to molecular bindings nearby and achieves an ultralow detection limit of 1 x 10(-18) Mfor 7.3 kDa 24-mer single-stranded DNA.