Multiple reversals of optical binding force in plasmonic disk-ring nanostructures with dipole-multipole Fano resonances

Zhang, Qiang; Xiao, Jun Jun

doi:10.1364/ol.38.004240

Cited by 43 publications

(37 citation statements)

References 24 publications

(38 reference statements)

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“…It is interesting to compare the forces observed here with those found in the disk-ring Fano system by Zhang and Xiao [18]. In that system, the authors had uncovered the existence of force reversals and explained them in terms of the hybridization between the dipole modes of the disk and the multipole modes of the ring.…”

Section: Split-ring Resonatormentioning

confidence: 50%

“…The scattering dip is the signature of the Fano resonance [46]. Fano resonances are known to play a crucial role in determining the forces on asymmetric systems and in inhomogeneous fields [17,18,47,48].…”

Section: Dolmen Structurementioning

confidence: 99%

“…Obviously, internal forces will also arise within a nanostructure upon illumination, especially when this nanostructure is composed of several parts. However, to the best of our knowledge, such internal forces have never been studied except in some dimer systems [15][16][17][18][19]. In this article, we computationally investigate the internal forces on the individual parts of three compound systems commonly encountered in plasmonics : the plasmonic gap antenna, the dolmen structure, and the split ring resonator.…”

Section: Introductionmentioning

confidence: 99%

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Internal optical forces in plasmonic nanostructures

Raziman¹,

Martin²

2015

Opt. Express

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We present a computational study of the internal optical forces arising in plasmonic gap antennas, dolmen structures and split rings. We find that very strong internal forces perpendicular to the propagation direction appear in these systems. These internal forces show a rich behaviour with varying wavelength, incident polarisation and geometrical parameters, which we explain in terms of the polarisation charges induced on the structures. Various interesting and anomalous features arise such as lateral force reversal, optical pulling force, and circular polarisation-induced forces and torques along directions symmetry-forbidden for orthogonal linear polarisations. Understanding these effects and mastering internal forces in plasmonic nanostructures will be instrumental in implementing new functionalities in these nanophotonic systems.

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Section: Split-ring Resonatormentioning

confidence: 50%

Section: Dolmen Structurementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Internal optical forces in plasmonic nanostructures

Raziman¹,

Martin²

2015

Opt. Express

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“…In this article, we are also observing a case where optical pulling force is arising mainly due to dominant negative surface force, while previous tractor beam works have not investigated based on the idea of surface force and bulk force. Although such dominance of surface /polarization charges (that should lead to the dominance of surface force) is common for plasmonic structures due to local field enhancement, the dominance of surface force for dielectric scatterers with positive permittivity is a little bit unusual and highly dependent on the shape of the scatterer (cf. the force on crescent shaped object in ).…”

Section: Single or Multiple Rayleigh Particles Outside The Waveguidesmentioning

confidence: 99%

Lorentz force and the optical pulling of multiple rayleigh particles outside the dielectric cylindrical waveguides

et al. 2016

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The stimulating connection between the counter-intuitive optical pulling effects and the Lorentz force has not been investigated in literature. This work demonstrates that multiple absorbing or non-absorbing dielectric Rayleigh objects can be pulled locally with gradientless travelling waves outside a finite-sized cylindrical nano or micro waveguide, if it is made up of a hollow core along with the cladding of at least two different dielectrics of appropriate refractive indices. Lorentz force analysis reveals that the bound surface charges of Rayleigh scatterer experience backward force, which overcomes the positive bulk force and ultimately results in the net pulling of the scatterer for several spatial regions outside the waveguide. Finally, in order to control the pulling of multiple Rayleigh particles based on scattering force and binding force, we have proposed a possible cylindrical coupler set-up. This work may open a new window of optical pulling force due to the exclusion of conventional structured tractor beams along with the artificial exotic matters.

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“…For example, localized spoof surface plasmon resonance (LSSPR) has been observed in microstructured PEC disk [18,19]. The LSSPR can generate coherent phenomenon that are originally found in real plasmonic structures, such as Fano resonance in the heterodimer resonators [20][21][22]. The SSPP and LSSPR structures have additional geometrical degrees of freedom in designing the plasmon frequency which can be pushed down away from the visible, and enable THz and microwave surface plasmon modes that can find applications in THz sensing and microwave guiding [15,16,23,24].…”

Section: Introductionmentioning

confidence: 99%

Microwave band gap and cavity mode in spoof–insulator–spoof waveguide with multiscale structured surface

Zhang¹,

Xiao²,

Han³

et al. 2015

J. Phys. D: Appl. Phys.

Self Cite

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We propose a multiscale spoof-insulator-spoof (SIS) waveguide by introducing periodic geometry modulation in the wavelength scale to a SIS waveguide made of perfect electric conductor. The MSIS consists of multiple SIS subcells. The dispersion relationship of the fundamental guided mode of the spoof surface plasmon polaritons (SSPPs) is studied analytically within the small gap approximation. It is shown that the multiscale SIS possesses microwave band gap (MBG) due to the Bragg scattering. The "gap maps" in the design parameter space are provided. We demonstrate that the geometry of the subcells can efficiently adjust the effective refraction index of the elementary SIS and therefore further control the width and the position of the MBG. The results are in good agreement with numerical calculations by the finite element method (FEM). For finite-sized MSIS of given geometry in the millimeter scale, FEM calculations show that the first-order symmetric SSPP mode has zero transmission in the MBG within frequency range from 4.29 GHz to 5.1 GHz. A cavity mode is observed inside the gap at 4.58 GHz, which comes from a designer "point defect" in the multiscale SIS waveguide. Furthermore, ultrathin MSIS waveguides are shown to have both symmetric and antisymmetric modes with their own MBGs, respectively. The deep-subwavelength confinement and the great degree to control the propagation of SSPPs in such structures promise potential applications in miniaturized microwave device.

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Multiple reversals of optical binding force in plasmonic disk-ring nanostructures with dipole-multipole Fano resonances

Cited by 43 publications

References 24 publications

Internal optical forces in plasmonic nanostructures

Internal optical forces in plasmonic nanostructures

Lorentz force and the optical pulling of multiple rayleigh particles outside the dielectric cylindrical waveguides

Microwave band gap and cavity mode in spoof–insulator–spoof waveguide with multiscale structured surface

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