Numerical study of optical trapping properties of nanoparticle on metallic film with periodic structure

Chen, Ge; Wu, Zhensen; Bai, Jing; Gong, Lei

doi:10.1088/1674-1056/28/2/024203

Cited by 7 publications

(3 citation statements)

References 51 publications

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“…So, given the values of the required parameters (i.e., features), our machine learning based predictor tool can be used to accurately and very quickly predict the force type. Apart from our motivation of getting a quick prediction of the force type without a time-consuming full wave simulation, this artificial intelligence-based investigation may open up a novel research avenue [63] by providing us with yet another useful tool/approach [63] to investigate other problems related to optical force [64] and photon momentum inside a matter. [65]…”

Section: Application Of Machine Learning Techniques For Predicting Th...mentioning

confidence: 99%

Dielectric or plasmonic Mie object at air–liquid interface: The transferred and the traveling momenta of photon*

et al. 2020

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Considering the inhomogeneous or heterogeneous background, we have demonstrated that if the background and the half-immersed object are both non-absorbing, the transferred photon momentum to the pulled object can be considered as the one of Minkowski exactly at the interface. In contrast, the presence of loss inside matter, either in the half-immersed object or in the background, causes optical pushing of the object. Our analysis suggests that for half-immersed plasmonic or lossy dielectric, the transferred momentum of photon can mathematically be modeled as the type of Minkowski and also of Abraham. However, according to a final critical analysis, the idea of Abraham momentum transfer has been rejected. Hence, an obvious question arises: whence the Abraham momentum? It is demonstrated that though the transferred momentum to a half-immersed Mie object (lossy or lossless) can better be considered as the Minkowski momentum, Lorentz force analysis suggests that the momentum of a photon traveling through the continuous background, however, can be modeled as the type of Abraham. Finally, as an interesting sidewalk, a machine learning based system has been developed to predict the time-averaged force within a very short time avoiding time-consuming full wave simulation.

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Section: Application Of Machine Learning Techniques For Predicting Th...mentioning

confidence: 99%

Dielectric or plasmonic Mie object at air–liquid interface: The transferred and the traveling momenta of photon*

et al. 2020

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“…There are various approaches to resolving this issue. These include optical tweezers and traps [39][40][41][42][43][44][45], as well as atomic force microscope probes and specific mechanical tweezers [46][47][48].…”

Section: Introductionmentioning

confidence: 99%

Hybrid cube-in-cup nanoantenna: towards ordered photonics

Gritsienko¹,

Kurochkin²,

Lega³

et al. 2021

Nanotechnology

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The most significant goal of nanophotonics is the development of high-speed quantum emitting devices operating at ambient temperature. In this regard, plasmonic nanoparticles-on-mirror are potential candidates for designing high-speed photon sources. We introduce a novel hybrid nanoantenna (HNA) with CdSe/CdS colloidal quantum dots (QDs) based on a silver nanocube in a metal cup that presents a nanoparticle-in-cavity coupled with an emitters system. We use focused ion beam nanolithography to fabricate an ordered array of cups, which were then filled with colloidal nanoparticles using the most simple drop-casting and spin coating methods. The spectral and time-resolved studies of the samples with one or more nanocubes in the cup reveal a significant change in the radiation characteristics of QDs inside the nanoantenna. The Purcell effect causes an increase in the fluorescence decay rate (≥30) and an increase in the fluorescence intensity (≥3) of emitters in the HNA. Using the finite element method simulations, we have discovered that the proximity of the cups wall affects the oscillation modes of the gap plasmon, which, in turn, leads to changes in the electric field enhancement inside the nanoantenna gap. Additionally, substantial variations in the behavior of the gap plasmons at different polarizations of the exciting radiation have been revealed. The proposed nanoantenna can be useful in the development of plasmonic sensors, display pixels, and single-photon sources.

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“…Furthermore, Ge numerically investigated the optical trapping properties of nanoparticles placed on a gold film with periodic circular holes. [17] In 2014, based on the Rayleigh hypothesis and Floquet's theorem, Huang and Dong [18,19] proposed a vector method for the problem of TE electromagnetic wave scattering by a one-dimensional periodic conducting surface.…”

Section: Introductionmentioning

confidence: 99%

Factors influencing electromagnetic scattering from the dielectric periodic surface*

Wei¹,

Wu²,

et al. 2019

Chinese Phys. B

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The scattering characteristics of the periodic surface of infinite and finite media are investigated in detail. The Fourier expression of the scattering field of the periodic surface is obtained in terms of Huygens’s principle and Floquet’s theorem. Using the extended boundary condition method (EBCM) and T-matrix method, the scattering amplitude factor is solved, and the correctness of the algorithm is verified by use of the law of conservation of energy. The scattering cross section of the periodic surface in the infinitely long region is derived by improving the scattering cross section of the finite period surface. Furthermore, the effects of the incident wave parameters and the geometric structure parameters on the scattering of the periodic surface are analyzed and discussed. By reasonable approximation, the scattering calculation methods of infinite and finite long surfaces are unified. Besides, numerical results show that the dielectric constant of the periodic dielectric surface has a significant effect on the scattering rate and transmittance. The period and amplitude of the surface determine the number of scattering intensity peaks, and, together with the incident angle, influence the scattering intensity distribution.

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Numerical study of optical trapping properties of nanoparticle on metallic film with periodic structure

Cited by 7 publications

References 51 publications

Dielectric or plasmonic Mie object at air–liquid interface: The transferred and the traveling momenta of photon*

Dielectric or plasmonic Mie object at air–liquid interface: The transferred and the traveling momenta of photon*

Hybrid cube-in-cup nanoantenna: towards ordered photonics

Factors influencing electromagnetic scattering from the dielectric periodic surface*

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