SERS-active dielectric metamaterials based on periodic nanostructures

Lagarkov, A. N.; Budashov, Igor A.; Chistyaev, V. A.; Ezhov, A. A.; Fedyanin, Andrey A.; Иванов, А. В.; Kurochkin, Ilya N.; Kosolobov, S. S.; Латышев, А. В.; Nasimov, D. A.; Ryzhikov, Ilya A.; Shcherbakov, Maxim R.; Vaskin, Aleksandr; Sarychev, Andrey K.

doi:10.1364/oe.24.007133

Cited by 22 publications

(26 citation statements)

References 55 publications

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“…Such pulsed electrical stimulation of AFM‐based fishing is possibly conditioned by a local increase of electric field gradient and induced magnetic field on HOPG in the vicinity of the mica surface. The effect of increasing electric field gradient can lead to possible excitations of plasmons in graphite, constituting the layers of highly conductive graphene flakes , and eddy currents can also be generated on the graphite surface . Besides, it should be noted that dielectric properties of the mica surface in the mica–graphite structure in their turn can influence the possibility of plasmon generation, and also change due to the changes in water structure on the surface of mica with immobilized probe molecules, as well as other electrokinetic effects.…”

Section: Discussionmentioning

confidence: 99%

Highly sensitive protein detection by biospecific AFM‐based fishing with pulsed electrical stimulation

et al. 2017

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We report here the highly sensitive detection of protein in solution at concentrations from 10 –15 to 10 –18 m using the combination of atomic force microscopy ( AFM ) and mass spectrometry. Biospecific detection of biotinylated bovine serum albumin was carried out by fishing out the protein onto the surface of AFM chips with immobilized avidin, which determined the specificity of the analysis. Electrical stimulation was applied to enhance the fishing efficiency. A high sensitivity of detection was achieved by application of nanosecond electric pulses to highly oriented pyrolytic graphite placed under the AFM chip. A peristaltic pump‐based flow system, which is widely used in routine bioanalytical assays, was employed throughout the analysis. These results hold promise for the development of highly sensitive protein detection methods using nanosensor devices.

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Section: Discussionmentioning

confidence: 99%

Highly sensitive protein detection by biospecific AFM‐based fishing with pulsed electrical stimulation

et al. 2017

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“…Detection of ultra-low proteins concentration in solution using novel physical effects like plasmonics, surface-enhanced Raman spectroscopy, and photonic waveguide-based sensors are promising techniques for novel medical diagnostics [1][2][3][4][5][6][7]. In particular, a low myoglobin concentration is a relevant marker of myocardial infarction in human blood plasma [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

SERS-Active Substrates Nanoengineering Based on e-Beam Evaporated Self-Assembled Silver Films

et al. 2019

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Surface-enhanced Raman spectroscopy (SERS) has been intensely studied as a possible solution in the fields of analytical chemistry and biosensorics for decades. Substantial research has been devoted to engineering signal enhanced SERS-active substrates based on semi-continuous nanostructured silver and gold films, or agglomerates of micro- and nanoparticles in solution. Herein, we demonstrate the high-amplitude spectra of myoglobin precipitated out of ultra-low concentration solutions (below 10 μg/mL) using e-beam evaporated continuous self-assembled silver films. We observe up to 105 times Raman signal amplification with purposefully designed SERS-active substrates in comparison with the control samples. SERS-active substrates are obtained by electron beam evaporation of silver thin films with well controlled nanostructured surface morphology. The characteristic dimensions of the morphology elements vary in the range from several to tens of nanometers. Using optical confocal microscopy we demonstrate that proteins form a conformation on the surface of the self-assembled silver film, which results in an effective enhancement of giant Raman scattering signal. We investigate the various SERS substrates surface morphologies by means of atomic force microscopy (AFM) in combination with deep data analysis with Gwyddion software and a number of machine learning techniques. Based on these results, we identify the most significant film surface morphology patterns and evaporation recipe parameters to obtain the highest amplitude SERS spectra. Moreover, we demonstrate the possibility of automated selection of suitable morphological parameters to obtain the high-amplitude spectra. The developed AFM data auto-analysis procedures are used for smart optimization of SERS-active substrates nanoengineering processes.

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“…A strongly amplified electromagnetic field can be generated by disordered metal-dielectric composites in a broad spectral range [9]. Periodically ordered nanostructures enhance local EM field at selected frequencies [10,11,12,13,14,15,16,17,18,19,20,21,22,23]. Plasmon modes propagating in a chain of metallic nanoparticles, where the particle radius a is relatively equal to the distance δ between particles, are precisely investigated in [24].…”

Section: Introductionmentioning

confidence: 99%

“…Kim et al have showed an effective absorption of the EM field in periodic semiconductor metafilms for solar cells (see [72]). Some groups have demonstrated a strong electric field and SERS enhancement for periodic metafilms made of rectangular dielectric bars [12,16]. Sharp minima in the reflectance of the dielectric metasurface can be achieved in the microwave and optical domains.…”

Section: Introductionmentioning

confidence: 99%

Light Concentration by Metal-Dielectric Micro-Resonators for SERS Sensing

et al. 2018

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Metal-dielectric micro/nano-composites have surface plasmon resonances in visible and near-infrared domains. Excitation of coupled metal-dielectric resonances is also important. These different resonances can allow enhancement of the electromagnetic field at a subwavelength scale. Hybrid plasmonic structures act as optical antennae by concentrating large electromagnetic energy in micro- and nano-scales. Plasmonic structures are proposed for various applications such as optical filters, investigation of quantum electrodynamics effects, solar energy concentration, magnetic recording, nanolasing, medical imaging and biodetection, surface-enhanced Raman scattering (SERS), and optical super-resolution microscopy. We present the review of recent achievements in experimental and theoretical studies of metal-dielectric micro and nano antennae that are important for fundamental and applied research. The main impact is application of metal-dielectric optical antennae for the efficient SERS sensing.

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SERS-active dielectric metamaterials based on periodic nanostructures

Cited by 22 publications

References 55 publications

Highly sensitive protein detection by biospecific AFM‐based fishing with pulsed electrical stimulation

Highly sensitive protein detection by biospecific AFM‐based fishing with pulsed electrical stimulation

SERS-Active Substrates Nanoengineering Based on e-Beam Evaporated Self-Assembled Silver Films

Light Concentration by Metal-Dielectric Micro-Resonators for SERS Sensing

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