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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Belyaev B. A., Tyurnev V. V.
Заглавие : Resonances of electromagnetic oscillations in a spherical metal nanoparticle
Место публикации : Microw. Opt. Technol. Lett.: Wiley-Blackwell, 2016. - Vol. 58, Is. 8. - P.1883-1886. - ISSN 0895-2477, DOI 10.1002/mop.29930. - ISSN 1098-2760(eISSN)
Примечания : Cited References:18
Предметные рубрики: OPTICAL-PROPERTIES
LIGHT
Ключевые слова (''Своб.индексиров.''): plasmonics--scattering--particles--resonators--resonant modes
Аннотация: Electrodynamic analysis of plasma oscillations in a spherical metal nanoparticle is performed. It is shown that typical reduction in the frequency and quality factor of the resonances with increasing nanoparticle radius fades if the mode number grows. Depending on the particle radius, the resonant enhancement of the electric field might considerably either increase or decrease with increasing mode number. (C) 2016 Wiley Periodicals, Inc.
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Bulgakov E. N., Sadreev A. F.
Заглавие : Guiding electromagnetic waves through the bound states in the radiation continuum in novel types
Коллективы : International Conference on Metamaterials, Photonic Crystals and Plasmonics
Место публикации : The 9th International Conference on Metamaterials, Photonic Crystals and Plasmonics (META’18): Program/ spec. sess. org. A. F. Sadreev [et al.]. - 2018. - Session 4A10: Fano Resonances in Optics and Microwaves: Physics and Application III. - P.78
Примечания : Материалы конференции публикуются в журналах: Nanophotonics, Applied Physics A, Optical Materials Express, Advanced Electromagnetics
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Bulgakov E. N., Maksimov D. N.
Заглавие : On bound states in the continuum in dielectric gratings
Коллективы : International Conference on Metamaterials, Photonic Crystals and Plasmonics
Место публикации : The 9th International Conference on Metamaterials, Photonic Crystals and Plasmonics (META’18): Program/ spec. sess. org. A. F. Sadreev [et al.]. - 2018. - Session 4A3: Fano Resonances in Optics and Microwaves: Physics and Application II. - P.71
Примечания : Материалы конференции публикуются в журналах: Nanophotonics, Applied Physics A, Optical Materials Express, Advanced Electromagnetics
Аннотация: In this work we experimentally observe a symmetry protected optical bound state in the continuum(BIC) with zero angular momentum in 1D array of ceramic disks at GHz frequencies. We analyze the dependence of Q factor of BIC on the number of the disks and the level of the material losses. We confirmed theoretical prediction about quadratic growth of the Q factor with the number of the disks and its following saturation due to material losses.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Bulgakov E. N., Pichugin K. N., Sadreev A. F.
Заглавие : Resonant binding of dielectric particles to a metal surface without plasmonics
Коллективы : Russian Foundation for Basic Research ProjectRussian Foundation for Basic Research (RFBR) [19-02-00055]
Место публикации : Phys. Rev. A. - 2021. - Vol. 103, Is. 5. - Ст.L051501. - ISSN 2469-9926, DOI 10.1103/PhysRevA.103.L051501. - ISSN 2469-9934(eISSN)
Примечания : Cited References: 36. - The work was supported by Russian Foundation for Basic Research Project No. 19-02-00055
Предметные рубрики: RADIATION PRESSURE
OPTICAL BINDING
FORCES
MANIPULATION
Аннотация: A high index dielectric spherical particle supports the high-Q resonant Mie modes that result in a regular series of sharp resonances in the radiation pressure. The presence of a perfectly conducting metal surface transforms the Mie modes into extremely high-Q magnetic bonding or electric antibonding modes for the close approach of a sphere to a surface. We show that an electromagnetic plane wave with normal incidence results in repulsive or attractive resonant optical forces relative to a metal for the excitation of electric bonding or magnetic antibonding resonant modes, respectively. A magnitude of resonant optical forces reaches the order of 1 nN of magnitude for micron-sized silicon particles and a power of light 1mW/μm2 that exceeds the gravitational force by four orders. However, what is the most remarkable is there are steady positions for a sphere between the pulling and pushing forces that give rise to the resonant binding of the sphere to a metal surface.
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Вид документа : Статья из сборника (выпуск продолж. издания)
Шифр издания :
Автор(ы) : Ershov A. E., Bikbaev R. G., Rasskazov I. L., Gerasimov V. S., Timofeev I. V., Polyutov S. P., Karpov S. V.
Заглавие : Collective resonances in hybrid photonic-plasmonic nanostructures
Коллективы : International Conference on Metamaterials and Nanophotonics
Место публикации : J. Phys.: Conf. Ser. - 2020. - Vol. 1461, Is. 1. - Ст.012046. - DOI 10.1088/1742-6596/1461/1/012046
Примечания : Cited References: 11. - The reported study was funded by Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, Krasnoyarsk Regional Fund of Science (Grant No. 18-42-240013); A.E. thanks the grant of the President of Russian Federation (agreement 075-15-2019-676)
Аннотация: We present the theoretical model to predict the spectral position of Rayleigh anomalies emerged in hybrid system consisting of periodic array of plasmonic nanodisks embeded into the middle of defect layer of 1D photonic crystal (PhC). The spectral positions of these new emerged Rayleigh anomalies agree well with the results of exact simulations with Finite-Difference Time-Domain (FDTD) method.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Bhalla N., Taneja S., Thakur P., Sharma P. K., Mariotti D., Maddi C., Ivanova O. S., Petrov D. A., Sukhachev A. L., Edelman I. S., Thakur A.
Заглавие : Doping independent work function and stable band gap of spinel ferrites with tunable plasmonic and magnetic properties
Место публикации : Nano Lett. - 2021. - Vol. 21, Is. 22. - P.9780-9788. - ISSN 15306984 (ISSN), DOI 10.1021/acs.nanolett.1c03767
Примечания : Cited References: 41. - All authors would like to acknowledge support from EPSRC fund, award no. EP/R008841/1. Nikhil Bhalla wishes to thank Department of Economy, Northern Ireland, for supporting part of this work under GCRF Pump Priming Fund. Additionally, Atul Thakur and Preeti Thakur would like to acknowledge Gurujal, an initiative with district administration Gurugram for financial assistance from project no.176, Amity Incubation grant from the Ministry of Electronics and Information Technology (MeitY) under Technology Incubation and Development of Entrepreneurs (TIDE 2.0) program and the startup nanoLatticeX
Аннотация: Tuning optical or magnetic properties of nanoparticles, by addition of impurities, for specific applications is usually achieved at the cost of band gap and work function reduction. Additionally, conventional strategies to develop nanoparticles with a large band gap also encounter problems of phase separation and poor crystallinity at high alloying degree. Addressing the aforementioned trade-offs, here we report Ni–Zn nanoferrites with energy band gap (Eg) of ≈3.20 eV and a work function of ≈5.88 eV. While changes in the magnetoplasmonic properties of the Ni–Zn ferrite were successfully achieved with the incorporation of bismuth ions at different concentrations, there was no alteration of the band gap and work function in the developed Ni–Zn ferrite. This suggests that with the addition of minute impurities to ferrites, independent of their changes in the band gap and work function, one can tune their magnetic and optical properties, which is desired in a wide range of applications such as nanobiosensing, nanoparticle based catalysis, and renewable energy generation using nanotechnology.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Bhalla, Nikhil, Thakur, Atul, Edelman I. S., Ivantsov R. D.
Заглавие : Endorsing a hidden plasmonic mode for enhancement of LSPR sensing performance in evolved metal–insulator geometry using an unsupervised machine learning algorithm
Место публикации : ACS Phys. Chem. Au. - 2022. - Vol. 2, Is. 6. - P.459-467. - ISSN 2694-2445, DOI 10.1021/acsphyschemau.2c00033
Примечания : Cited References: 35
Аннотация: Large-area nanoplasmonic structures with pillared metal–insulator geometry, also called nanomushrooms (NM), consist of an active spherical-shaped plasmonic material such as gold as its cap and silicon dioxide as its stem. NM is a geometry which evolves from its precursor, nanoislands (NI) consisting of aforementioned spherical structures on flat silicon dioxide substrates, via selective physical or chemical etching of the silicon dioxide. The NM geometry is well-known to provide enhanced localized surface plasmon resonance (LSPR) sensitivity in biosensing applications as compared to NI. However, precise optical phenomenon behind this enhancement is unknown and often associated with the existence of electric fields in the large fraction of the spatial region between the pillars of NM, usually accessible by the biomolecules. Here, we uncover the association of LSPR enhancement in such geometries with a hidden plasmonic mode by conducting magneto-optics measurements and by deconvoluting the absorbance spectra obtained during the local refractive index change of the NM and NI geometries. By the virtue of principal component analysis, an unsupervised machine learning technique, we observe an explicit relationship between the deconvoluted modes of LSPR, the differential absorption of left and right circular polarized light, and the refractive index sensitivity of the LSPR sensor. Our findings may lead to the development of new approaches to extract unknown properties of plasmonic materials or establish new fundamental relationships between less understood photonic properties of nanomaterials.
https://doi.org/10.1021/acsphyschemau.2c00033
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Popov A. K., Shalaev M. I., Myslivets S. A., Slabko V. V., Nefedov I. S.
Заглавие : Enhancing coherent nonlinear-optical processes in nonmagnetic backward-wave materials
Коллективы : International conference on metamaterials, photonic crystals and plasmonics
Место публикации : Appl. Phys. A: Springer, 2012. - Vol. 109, Is. 4. - P.835-840. - ISSN 0947-8396, DOI 10.1007/s00339-012-7390-8
Примечания : Cited References: 35. - This work was supported in part by the U.S. National Science Foundation under Grant No. ECCS-1028353, by the US Air Force Office of Scientific Research under Grant No. FA9550-12-1-298; by the Presidium of the Russian Academy of Sciences under Project No. 24.31, by the Ministry of Science under Federal Research Program No. 14.V37.21.0730 and by the Siberian Division of the Russian Academy of Sciences and Siberian Federal University under Integration Project No. 101; and by the Academy of Finland and Nokia through the Center-of-Excellence program.
Предметные рубрики: NEGATIVE-INDEX METAMATERIALS
LEFT-HANDED METAMATERIALS
2ND-HARMONIC GENERATION
PARAMETRIC AMPLIFICATION
COMPENSATING LOSSES
OSCILLATOR
Аннотация: Novel concepts of nonlinear-optical (NLO) photonic metamaterials (MMs) are proposed. They concern with greatly enhanced coherent NLO energy exchange between ordinary and backward waves (BWs) through the frequency-conversion processes. Two different classes of materials which support BWs are considered: crystals that support optical phonons with negative group velocity and MMs with specially engineered spatial dispersion. The possibility to replace plasmonic NLO MMs enabling magnetic response at optical frequencies, which are very challenging to engineer, by the ordinary readily available crystals, are discussed. The possibility to mimic extraordinary NLO frequency-conversion propagation processes attributed to negative-index MMs (NIMs) is shown in some of such crystals, if optical phonons with negative group velocity and a proper phase-matching geometry are implemented. Here, optical phonons are used as one of the coupled counterparts instead of backward electromagnetic waves (BEMWs). The appearance of BEMWs in metaslabs made of carbon nanotubes, the possibilities and extraordinary properties of BW second harmonic generation in such MMs is another option of nonmagnetic NIMs, which is described too. Among the applications of the proposed photonic materials is the possibility of creation of a family of unique BW photonic devices such as frequency doubling metamirror and Raman amplifiers with greatly improved efficiency.
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Popov A. K., Shalaev M. I., Myslivets S. A., Slabko V. V., Nefedov I. S.
Заглавие : Enhancing coherent nonlinear-optical processes in nonmagnetic backward-wave materials
Коллективы : International conference on metamaterials, photonic crystals and plasmonics
Место публикации : The 3th International Conference on Metamaterials, Photonic Crystals and Plasmonics (META’12): Proceedings. - 2012. - P.66
Аннотация: Novel concepts of nonlinear-optical (NLO) photonic metamaterials (MMs) are proposed. They concern with greatly enhanced coherent NLO energy exchange between ordinary and backward waves (BWs) through the frequency-conversion processes. Two different classes of materials which support BWs are considered: crystals that support optical phonons with negative group velocity and MMs with specially engineered spatial dispersion. The possibility to replace plasmonic NLO MMs enabling magnetic response at optical frequencies, which are very challenging to engineer, by the ordinary readily available crystals, are discussed. The possibility to mimic extraordinary NLO frequency-conversion propagation processes attributed to negative-index MMs (NIMs) is shown in some of such crystals, if optical phonons with negative group velocity and a proper phase-matching geometry are implemented. Here, optical phonons are used as one of the coupled counterparts instead of backward electromagnetic waves (BEMWs). The appearance of BEMWs in metaslabs made of carbon nanotubes, the possibilities and extraordinary properties of BW second harmonic generation in such MMs is another option of nonmagnetic NIMs, which is described too. Among the applications of the proposed photonic materials is the possibility of creation of a family of unique BW photonic devices such as frequency doubling metamirror and Raman amplifiers with greatly improved efficiency.
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10.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Ershov A. E., Gavrilyuk A. P., Karpov S. V.
Заглавие : Plasmonic nanoparticle aggregates in high-intensity laser fields: effect of pulse duration
Место публикации : Plasmonics: Springer, 2016. - Vol. 11, No. 2. - P.403-410. - ISSN 1557-1955, DOI 10.1007/s11468-015-0054-8
Примечания : Cited References: 20. - Authors are thankful to Prof. V.A. Markel (University of Pennsylvania) for supplying program codes with realization of coupled dipole method for polydisperse nanoparticle aggregates. This work was performed within the state contract of the RF Ministry of Education and Science for Siberian Federal University for scientific research in 2014 (Reference number 1792)
Предметные рубрики: METAL NANOPARTICLES
Ключевые слова (''Своб.индексиров.''): nanoparticle--surface plasmon--colloidal aggregate--optodynamics
Аннотация: We use an optodynamic model to study the interaction of pulsed laser radiation of different duration with mono- and polydisperse dimers and trimers of plasmonic nanoparticles as resonant domains of colloid Ag multiparticle aggregates. A comparative analysis of the influence of pulse duration on the kinetic characteristics of domains accompanied by the change in their local structure was carried out taking into account the intensity of incident radiation. The obtained results explain the reasons for laser photochromic reactions in materials containing colloidal aggregates of plasmonic nanoparticles.
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