Enhanced sensing of molecular optical activity with plasmonic nanohole arrays

@article{Gorkunov2017EnhancedSO,
  title={Enhanced sensing of molecular optical activity with plasmonic nanohole arrays},
  author={Maxim V. Gorkunov and A. N. Darinskii and Alexey V. Kondratov},
  journal={Journal of The Optical Society of America B-optical Physics},
  year={2017},
  volume={34},
  pages={315-320}
}
Prospects of using metal-hole arrays for the enhanced optical detection of molecular chirality in nanosized volumes are investigated. Light transmission through the holes filled with an optically active material is modeled, and the activity enhancement by more than an order of magnitude is demonstrated. The spatial resolution of the chirality detection is shown to be of a few tens of nanometers. From comparing the effect in arrays of cylindrical holes and holes of complex chiral shape, it is… 

Figures from this paper

Resonant optical effects in composite Co/opal-based magnetoplasmonic structures.
TLDR
Examination of resonant optical effects in composite structures based on artificial opal films covered by a thin cobalt layer, which forms a 2D hexagonal lattice of nanoholes in the metal film makes Co/opal films promising in plasmonic applications.
Bi-Directional Faraday Rotation Selective Enhancement on Embedded Nano-Gratings
The magneto-optic rotation enhanced by plamonic resonance brought a new method in the research of magnetoplasmon and magneto-optical devices. To further the availability of this method, the Faraday
Enantiospecific Detection of Chiral Nanosamples Using Photoinduced Force
Author(s): Kamandi, M; Albooyeh, M; Guclu, C; Veysi, M; Zeng, J; Wickramasinghe, K; Capolino, F | Abstract: © 2017 American Physical Society. We propose a high-resolution microscopy technique for
Force Detection of Electromagnetic Beam Chirality at the Nanoscale
Abid Anjum Sifat, Filippo Capolino, Eric O. Potma Department of Electrical Engineering and Computer Science, University of California, Irvine and Department of Chemistry, University of California,
Surface electromagnetic waves in bianisotropic superlattices and homogeneous media
This paper analyzes the existence of surface electromagnetic waves (SEWs) at the interface of bianisotropic bicrystals which are formed of half-infinite periodic superlattices or of homogeneous
Investigating the nature of chiral near-field interactions (article)
L.E.B., I.R.H., C.P.G., and A.P.H. wish to acknowledge financial support form the Engineering and Physical Sciences Research Council (EPSRC) of the United Kingdom, via the EPSRC Centre for
Standard Document Template Microsoft Word versi 7 Untuk Jurnal Matematika dan Sains versi I, 15 Oktober 1998
We propose a novel high resolution microscopy technique for enantio-specific detection of chiral samples down to sub-100 nm size, based on force measurement. We delve into the differential

References

SHOWING 1-10 OF 24 REFERENCES
Amplification of chiroptical activity of chiral biomolecules by surface plasmons.
TLDR
It was found that even two monolayers of chiral molecules can induce observable plasmonic CD, while without the presence of the plAsmonic nanostructures their own CD signal is unmeasurable, suggesting plasMonic arrays could offer a route to enhanced sensitivity for chirality detection.
Optofluidic concentration: plasmonic nanostructure as concentrator and sensor.
TLDR
This work employs the nanohole array geometry and the conducting nature of the film to actively concentrate analyte within the sensor to achieve 180-fold enrichment of a dye, and 100-fold enriched and simultaneous sensing of a protein in less than 1 min.
Discrete nanocubes as plasmonic reporters of molecular chirality.
TLDR
It is shown that shaped nonchiral nanoparticles, namely, gold/silver core/shell nanocubes, can act as plasmonic reporters of chirality for attached molecules by providing a giant, 2 orders of magnitude CD enhancement in a near-visible region.
Plasmonic circular dichroism of Peptide-functionalized gold nanoparticles.
TLDR
The results suggest that chiroptical properties of nanomaterials can be engineered using peptides, and this work used peptides of differing secondary structures to artificially create optically active chiral gold nanoparticles through peptide-nanoparticle interactions as observed by circular dichroism spectroscopy.
Extreme optical activity and circular dichroism of chiral metal hole arrays
We report extremely strong optical activity and circular dichroism exhibited by subwavelength arrays of four-start-screw holes fabricated with single-pass focused ion beam milling of freely suspended
Ultrasensitive detection and characterization of biomolecules using superchiral fields.
TLDR
It is shown that superchiral electromagnetic fields, generated by the optical excitation of plasmonic planar chiral metamaterials, are highly sensitive probes of chiral supramolecular structure.
Extraordinary optical transmission through sub-wavelength hole arrays
The desire to use and control photons in a manner analogous to the control of electrons in solids has inspired great interest in such topics as the localization of light, microcavity quantum
Light in tiny holes
TLDR
The presence of tiny holes in an opaque metal film leads to a wide variety of unexpected optical properties such as strongly enhanced transmission of light through the holes and wavelength filtering, which are now known to be due to the interaction of the light with electronic resonances in the surface of the metal film.
Sensitivity of metal nanoparticle surface plasmon resonance to the dielectric environment.
TLDR
Electrodynamic simulations of gold nanoparticle spectra were used to investigate the sensitivity of localized surface plasmon band position to the refractive index, n, of the medium for nanoparticles of various shapes and nanoshells of various structures, and the results extended to particles of other shapes, composed of other metals, and to higher-order modes.
Plasmonics for future biosensors
Confinement and enhancement of light by plasmonics allows a high density of independent subwavelength sensor elements to be constructed in micrometre-sized arrays. It is relatively straightforward to
...
...