Multiresonant plasmonic nanostructure for ultrasensitive fluorescence biosensing

0545230 - FZÚ 2022 RIV DE eng J - Článek v odborném periodiku
Fossati, S. - Hageneder, S. - Menad, S. - Maillart, E. - Dostálek, Jakub
Multiresonant plasmonic nanostructure for ultrasensitive fluorescence biosensing.
Nanophotonics. Roč. 9, č. 11 (2020), s. 3673-3685. ISSN 2192-8606. E-ISSN 2192-8614
Grant CEP: GA MŠMT(CZ) EF18_053/0016627
Grant ostatní: OP VVV - Mobility FZU 2(XE) CZ.02.2.69/0.0/0.0/18_053/0016627
Institucionální podpora: RVO:68378271
Klíčová slova: fluorescence * multidiffractive gratings * optical biosensor * plasmonics * ultrasensitive assays
Obor OECD: Biochemical research methods
Impakt faktor: 8.449, rok: 2020
Způsob publikování: Open access

A novel metallic nanostructure for efficient plasmon-enhanced fluorescence readout of biomolecular binding events on the surface of a solid sensor chip is reported. It is based on gold multiperiod plasmonic grating (MPG) that supports spectrally narrow plasmonic resonances centered at multiple distinct wavelengths. They originate from diffraction coupling to propagating surface plasmons (SPs) forming a delocalized plasmonic hotspot associated with enhanced electromagnetic field intensity and local density of optical states at its surface. The supported SP resonances are tailored to couple with the excitation and emission transitions of fluorophores that are conjugated with the biomolecules and serve as labels.
Trvalý link: http://hdl.handle.net/11104/0321981