scholarly journals The light-oxygen effect in biological cells enhanced by highly localized surface plasmon-polaritons

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Anna Khokhlova ◽  
Igor Zolotovskii ◽  
Sergei Sokolovski ◽  
Yury Saenko ◽  
Edik Rafailov ◽  
...  
Keyword(s):  
Surface Plasmon ◽  
Localized Surface Plasmon ◽  
Oxygen Effect ◽  
Experimental Conditions ◽  
Strong Laser Field ◽  
Low Intensity ◽  
Spectrum Band ◽  
Plasmon Polariton ◽  
Oxidative Effects ◽  
Plasmon Polaritons

AbstractHere at the first time we suggested that the surface plasmon-polariton phenomenon which it is well described in metallic nanostructures could also be used for explanation of the unexpectedly strong oxidative effects of the low-intensity laser irradiation in living matters (cells, tissues, organism). We demonstrated that the narrow-band laser emitting at 1265 nm could generate significant amount of the reactive oxygen species (ROS) in both HCT116 and CHO-K1 cell cultures. Such cellular ROS effects could be explained through the generation of highly localized plasmon-polaritons on the surface of mitochondrial crista. Our experimental conditions, the low-intensity irradiation, the narrow spectrum band (<4 nm) of the laser and comparably small size bio-structures (~10 μm) were shown to be sufficient for the plasmon-polariton generation and strong laser field confinement enabling the oxidative stress observed.

scholarly journals Author Correction: The light-oxygen effect in biological cells enhanced by highly localized surface plasmon-polaritons

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Anna Khokhlova ◽  
Igor Zolotovskii ◽  
Sergei Sokolovski ◽  
Yury Saenko ◽  
Edik Rafailov ◽  
...  
Keyword(s):  
Surface Plasmon ◽  
Surface Plasmon Polaritons ◽  
Localized Surface Plasmon ◽  
Oxygen Effect ◽  
Biological Cells ◽  
Plasmon Polaritons

scholarly journals Composite Structure Based on Gold-Nanoparticle Layer and HMM for Surface-Enhanced Raman Spectroscopy Analysis

Nanomaterials ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 587
Author(s):  
Zirui Wang ◽  
Yanyan Huo ◽  
Tingyin Ning ◽  
Runcheng Liu ◽  
Zhipeng Zha ◽  
...  
Keyword(s):  
Gold Nanoparticle ◽  
Surface Plasmon ◽  
Composite Structure ◽  
Surface Enhanced Raman Spectroscopy ◽  
Localized Surface Plasmon ◽  
Sers Substrate ◽  
Nanoparticle Layer ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Plasmon Polaritons

Hyperbolic metamaterials (HMMs), supporting surface plasmon polaritons (SPPs), and highly confined bulk plasmon polaritons (BPPs) possess promising potential for application as surface-enhanced Raman scattering (SERS) substrates. In the present study, a composite SERS substrate based on a multilayer HMM and gold-nanoparticle (Au-NP) layer was fabricated. A strong electromagnetic field was generated at the nanogaps of the Au NPs under the coupling between localized surface plasmon resonance (LSPR) and a BPP. Additionally, a simulation of the composite structure was assessed using COMSOL; the results complied with those achieved through experiments: the SERS performance was enhanced, while the enhancing rate was downregulated, with the extension of the HMM periods. Furthermore, this structure exhibited high detection performance. During the experiments, rhodamine 6G (R6G) and malachite green (MG) acted as the probe molecules, and the limits of detection of the SERS substrate reached 10−10 and 10−8 M for R6G and MG, respectively. Moreover, the composite structure demonstrated prominent reproducibility and stability. The mentioned promising results reveal that the composite structure could have extensive applications, such as in biosensors and food safety inspection.

Surface Plasmon Polaritons and Inverse Faraday Effect

2012 ◽  
Vol 190 ◽  
pp. 369-372 ◽  
Author(s):  
N.E. Khokhlov ◽  
V.I. Belotelov ◽  
A.N. Kalish ◽  
A.K. Zvezdin
Keyword(s):  
Surface Plasmon ◽  
Surface Plasmon Polaritons ◽  
Surface Plasmon Polariton ◽  
Faraday Effect ◽  
Angle Of Incidence ◽  
Local Magnetization ◽  
Inverse Faraday Effect ◽  
Order Of Magnitude ◽  
Plasmon Polariton ◽  
Plasmon Polaritons

t is shown that the inverse Faraday effect appears in the case of surface plasmon polariton propagation near a metal-paramagnetic interface. The inverse Faraday effect in nanostructured periodically perforated metaldielectric films increases because of the excitation of surface plasmon polaritons. In this case, a stationary magnetic field is amplified by more than an order of magnitude compared to the case of a smooth paramagnetic film. The distribution of an electromagnetic field is sensitive to the wavelength and the angle of incidence of light, which allows one to efficiently control the local magnetization arising due to the inverse Faraday effect.

Modeling of a Surface Plasmon Polariton Interferometer

2003 ◽  
Vol 797 ◽  
Author(s):  
Victor Coello ◽  
Thomas Søndergaard ◽  
Sergey I. Bozhevolnyi
Keyword(s):  
Experimental Data ◽  
Surface Plasmon ◽  
Surface Plasmon Polariton ◽  
Beam Splitter ◽  
Optical Interferometer ◽  
Plasmon Polariton ◽  
Plasmon Polaritons ◽  
Calculated Intensity ◽  
Good Agreement ◽  
Dipolar Model

ABSTRACTWe model the operation of a micro-optical interferometer for surface plasmon polaritons (SPPs) that comprises an SPP beam-splitter formed by equivalent scatterers lined up and equally spaced. The numerical calculations are carried out by using a vector dipolar model for multiple SPP scattering. The SPP beam-splitter is simulated for different angles of the incident SPP beam, radii of the particles, and inter-particle distances in order to find a suitable configuration for realization of a 3dB SPP beam-splitter. The results obtained are in good agreement with experimental data available in the literature. The feasibility of fabricating an interferometer is thereby corroborated and the calculated intensity maps are found rather similar to those experimentally reported.

scholarly journals Optical Dispersions of Bloch Surface Waves and Surface Plasmon Polaritons: Towards Advanced Biosensors

Materials ◽  
2019 ◽  
Vol 12 (19) ◽  
pp. 3147 ◽  
Author(s):  
Zigmas Balevicius ◽  
Algirdas Baskys
Keyword(s):  
Surface Waves ◽  
Surface Plasmon ◽  
Total Internal Reflection ◽  
Surface Plasmon Polariton ◽  
Point Of View ◽  
Wavelength Scanning ◽  
Bk7 Glass ◽  
Plasmon Polariton ◽  
Plasmon Polaritons ◽  
Total Internal Reflection Ellipsometry

The total internal reflection ellipsometry (TIRE) method was used for the excitation and study of the sensitivity features of surface plasmon polariton (SPP) and Bloch surface waves (BSWs) resonances. For the BSWs generation distributed Bragg gratings were formed on the tops of the substrates (BK7 glass substrate), which had six bilayers of ~120 nm SiO2 and ~40 nm TiO2 and 40 nm of TiO2 on the top. The SPP sample consisted of the BK7 glass prism and a gold layer (45 nm). Numerical calculations of the optical dispersions and the experimental TIRE data have shown that SPP resonance overtake the BSWs in wavelength scanning by a factor of about 17. However, for the ellipsometric parameters Ψ and Δ in the vicinity of excitations, the BSW sensitivity is comparable with SPP. The obtained resolutions were Δ S P P = 7.14 × 10 − 6 R I U , Ψ S P P = 1.7 × 10 − 5 R I U for the SPP and Δ B S W = 8.7 × 10 − 6 R I U , Ψ B S W = 2.7 × 10 − 5 R I U for the BSW. The capabilities of both surface excitations are discussed from the sensitivity point of view in the design of these advanced biosensors.

scholarly journals Influence of the Microstructure and Optical Constants on Plasmonic Properties of Copper Nanolayers

Materials ◽  
2021 ◽  
Vol 14 (23) ◽  
pp. 7292
Author(s):  
Tomasz Rerek ◽  
Beata Derkowska-Zielinska ◽  
Marek Trzcinski ◽  
Robert Szczesny ◽  
Mieczyslaw K. Naparty ◽  
...  
Keyword(s):  
Surface Plasmon ◽  
Photoelectron Spectroscopy ◽  
Surface Plasmon Polariton ◽  
Optical Constants ◽  
Localized Surface Plasmon ◽  
Silicon Substrates ◽  
X Ray ◽  
Force Microscopy ◽  
Atomic Force ◽  
Plasmon Polariton

Copper layers with thicknesses of 12, 25, and 35 nm were thermally evaporated on silicon substrates (Si(100)) with two different deposition rates 0.5 and 5.0 Å/s. The microstructure of produced coatings was studied using atomic force microscopy (AFM) and powder X-ray diffractometer (XRD). Ellipsometric measurements were used to determine the effective dielectric functions <ε˜> as well as the quality indicators of the localized surface plasmon (LSP) and the surface plasmon polariton (SPP). The composition and purity of the produced films were analysed using X-ray photoelectron spectroscopy (XPS).

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