All‐Angle Self‐Collimation‐Based Invisibility Cloaking in 2D Square Lattice Photonic Crystals

Karimpour, Saied; Noori, Mina

doi:10.1002/andp.202000026

Cited by 5 publications

(5 citation statements)

References 20 publications

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“…Precise control over sound propagation and phase front manipulation is essential for realizing the cloaking phenomenon. Various techniques, such as phase control utilizing meta-surfaces, phononics, and photonic crystals, have been proposed to pursue this goal [1][2][3][4][5][6]. Moreover, researchers have investigated extraordinary phenomena like negative refraction to advance our understanding of sound wave behavior and potential cloaking mechanisms [7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Two-dimensional honeycomb lattice structure for underwater acoustic cloaking using pentamode materials

Zaremanesh,

Bahrami

2023

Phys. Scr.

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This research article presents an innovative and novel approach to achieve underwater acoustic cloaking using a two-dimensional honeycomb lattice structure with pentamode materials in the kHz frequency range. Underwater acoustic cloaking holds substantial importance in various applications, such as marine engineering, imaging, and military operations, making the development of an efficient underwater acoustic shell imperative. The proposed cloak consists of a pentamode titanium material honeycomb lattice embedded in an air background, submerged in water. To attain effective camouflage and regulate the phase and energy flow, impedance matching was applied to the overall geometry of the structure. By fine-tuning the structural parameters of the cloaking shell, derived from the effective mass velocity and density for recovering reflected waves, impedance matching with water was ensured. Through simulation calculations and optimization design, the average total scattering cross-section of the acoustic cloak is determined to be 0.1. The results demonstrate that the pentamode material-based cloaking approach is not only suitable and efficient in achieving the cloaking phenomenon but also enhances operator flexibility. The operating frequency bandwidth of the acoustic cloaking system is approximately 8 kHz for lattice constant a = 5 mm. These findings pave the way for further advancements in underwater acoustic cloaking technologies.

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Section: Introductionmentioning

confidence: 99%

Two-dimensional honeycomb lattice structure for underwater acoustic cloaking using pentamode materials

Zaremanesh,

Bahrami

2023

Phys. Scr.

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“…From a computational point of view, numerical methods can be divided into roughly two classes: volume‐based methods and surface‐based methods. Almost all the differential equation‐based methods, such as the finite element method (FEM), [ 15 ] the finite‐difference time‐domain method (FDTD), [ 16 ] and the discrete‐dipole approximation (DDA) [ 17 ] belong to the volume‐based method class. Some integral equation‐based methods such as the volumetric method of moments algorithm (V‐MoM) [ 18 ] and the (discontinuous) Galerkin time‐domain [ 19 ] can also be regarded as belonging to the volume‐based method class.…”

Section: Introductionmentioning

confidence: 99%

A Non‐Singular, Field‐Only Surface Integral Method for Interactions between Electric and Magnetic Dipoles and Nano‐Structures

Sun

Klaseboer

2022

Annalen der Physik

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With the development of condensed-matter physics and nanotechnology, attention has turned to the fields near and on surfaces that result from interactions between electric dipole radiation and mesoscale structures. It is hoped that studying these fields will further the understanding of optical phenomena in nano-optics, quantum mechanics, electromagnetics, and sensing using solid-state photon emitters. Here, a method for implementing dynamic electric and magnetic dipoles in the frequency domain into a non-singular field-only surface integral method is described. It is shown that the effect of dipoles can conveniently be described as a relatively simple term in the integral equations, which fully represents how they drive the fields and interactions. Also, due to the non-singularity, this method can calculate the electric and magnetic fields on the surfaces of objects in both near and far fields with the same accuracy, which makes it an ideal tool to investigate nano-optical phenomena. The derivation of the framework is given and tested against a Mie theory alike formula. Some interesting examples are shown involving the interaction of dipoles with different types of mesoscale structures including parabolic nano-antennas and gold probes.

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“…Because of their intrinsic ability to confine electric fields (EFs) at a subwavelength scale, the resonant modes of photonic structures can sustain large EF enhancements and have brought about fruitful achievements in both fundamental and applied optics [1][2][3][4][5][6][7]. A variety of novel optical phenomena-such as Fano resonance [8], plasmon-exciton strong coupling [9], invisibility cloaking [10], giant circular dichroism [11], and large nonlinear response [12]-have been demonstrated using appropriately tailored resonant modes. These investigations have led to a diversity of unprecedented applications, including metalenses [13], single-photon sources [14], integrated quantum circuits [15], nanolasers [16], and biochemical-sensing installations [17], and thus bridge the gap between fundamental optics and the real-world applications.…”

Section: Introductionmentioning

confidence: 99%

Integrating lattice and gap plasmonic modes to construct dual-mode metasurfaces for enhancing light–matter interaction

Xue

et al. 2021

Sci. China Mater.

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Photonic structures with optical resonances beyond a single controllable mode are strongly desired for enhancing light-matter interactions and bringing about advanced photonic devices. However, the realization of effective multimodal photonic structures has been restricted by the limited tunable range of mode manipulation, the spatial dispersions of electric fields or the polarization-dependent excitations. To overcome these limitations, we create a dualmode metasurface by integrating the plasmonic surface lattice resonance and the gap plasmonic modes; this metasurface offers a widely tunable spectral range, good overlap in the spatial distribution of electric fields, and polarization independence of excitation light. To show that such dual-mode metasurfaces are versatile platforms for enhancing lightmatter interactions, we experimentally demonstrate a significant enhancement of second-harmonic generation using our design, with a conversion efficiency of 1-3 orders of magnitude larger than those previously obtained in plasmonic systems. These results may inspire new designs for functional multimodal photonic structures.

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All‐Angle Self‐Collimation‐Based Invisibility Cloaking in 2D Square Lattice Photonic Crystals

Cited by 5 publications

References 20 publications

Two-dimensional honeycomb lattice structure for underwater acoustic cloaking using pentamode materials

Two-dimensional honeycomb lattice structure for underwater acoustic cloaking using pentamode materials

A Non‐Singular, Field‐Only Surface Integral Method for Interactions between Electric and Magnetic Dipoles and Nano‐Structures

Integrating lattice and gap plasmonic modes to construct dual-mode metasurfaces for enhancing light–matter interaction

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