3D plasmonic crystal metamaterials for ultra-sensitive biosensing

Authors :: Andrei V. Kabashin
Artem Danilov
Maria Manousidaki
Konstantina Terzaki
Maria Farsari
Andrey Aristov
Costas Fotakis
Institute for Electronic Structure and Laser (IESL)
Foundation for Research and Technology - Hellas (FORTH)
Laboratoire Lasers, Plasmas et Procédés photoniques (LP3)
Aix Marseille Université (AMU)-Centre National de la Recherche Scientifique (CNRS)
Centre National de la Recherche Scientifique (CNRS)-Aix Marseille Université (AMU)
Source :: Scientific Reports, Scientific Reports, 2016, 6, ⟨10.1038/srep25380⟩, Scientific Reports, Nature Publishing Group, 2016, 6, ⟨10.1038/srep25380⟩
Publication Year :: 2016
Publisher :: Springer Science and Business Media LLC, 2016.
Abstract: We explore the excitation of plasmons in 3D plasmon crystal metamaterials and report the observation of a delocalized plasmon mode, which provides extremely high spectral sensitivity (>2600 nm per refractive index unit (RIU) change), outperforming all plasmonic counterparts excited in 2D nanoscale geometries, as well as a prominent phase-sensitive response (>3*104 deg. of phase per RIU). Combined with a large surface for bioimmobilization provided by the 3D matrix, the proposed sensor architecture promises a new important landmark in the advancement of plasmonic biosensing technology.