Graphene-Gold Metasurface Architectures for Ultrasensitive Plasmonic Biosensing

Graphene-Gold Metasurface Architectures for Ultrasensitive Plasmonic Biosensing

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 demonstr...

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Veröffentlicht in:Advanced materials (Weinheim) 2015-10, Vol.27 (40), p.6163-6169
Hauptverfasser: Zeng, Shuwen, Sreekanth, Kandammathe Valiyaveedu, Shang, Jingzhi, Yu, Ting, Chen, Chih-Kuang, Yin, Feng, Baillargeat, Dominique, Coquet, Philippe, Ho, Ho-Pui, Kabashin, Andrei V., Yong, Ken-Tye
Format: Artikel
Sprache:eng
Schlagworte:
Architecture
Binding energy
biosensors
Confinement
Deoxyribonucleic acid
DNA, Single-Stranded - analysis
Electromagnetic Phenomena
Engineering Sciences
Gain
Gold - chemistry
Graphite - chemistry
metasurfaces
Micro and nanotechnologies
Microelectronics
plasmonic sensing
Plasmonics
Singularities
surface plasmon polaritons
Surface Plasmon Resonance
Surface Properties
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Zusammenfassung: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 × 10−18 m for 7.3 kDa 24‐mer single‐stranded DNA.
ISSN:0935-9648
1521-4095
DOI:10.1002/adma.201501754