Computational Electromagnetics in Plasmonics

Vandenbosch, Guy A. E.

doi:10.5772/51166

Cited by 7 publications

(6 citation statements)

References 40 publications

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“…Nonetheless, such classical approaches are excellent at predicting the global properties of plasmonic nanoparticles, such as their optical activity, near-field enhancement and photoheating properties, and how these change through the manipulation of, e.g., dielectric environment, particle composition, particle geometry, or particle–particle interaction. ,,,, Common techniques to implement the electrodynamic description of plasmonic systems range from the use of analytical expressions for spherical particles in the Mie theory to deploying general methods to study systems with arbitrary geometries. Among the variety of the latter methods, the most common examples in the literature are finite element methods (FEM) and finite-differences time-domain (FDTD) methods. − …”

Section: Methodsmentioning

confidence: 99%

Applications of Plasmon-Enhanced Nanocatalysis to Organic Transformations

et al. 2019

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Localized surface plasmon resonance (LSPR) is a physical phenomenon exhibited by nanoparticles of metals including coinage metals, alkali metals, aluminum, and some semiconductors which translates into electromagnetic, thermal, and chemical properties. In the past decade, LSPR has been taken advantage of in the context of catalysis. While plasmonic nanoparticles (PNPs) have been successfully applied toward enhancing catalysis of inorganic reactions such as water splitting, they have also demonstrated exciting performance in the catalysis of organic transformations with potential applications in synthesis of molecules from commodity to pharmaceutical compounds. The advantages of this approach include improved selectivity, enhanced reaction rates, and milder reaction conditions. This review provides the basics of LSPR theory, details the mechanisms at play in plasmon-enhanced nanocatalysis, sheds light onto such nanocatalyst design, and finally systematically presents the breadth of organic reactions hence catalyzed.

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Section: Methodsmentioning

confidence: 99%

Applications of Plasmon-Enhanced Nanocatalysis to Organic Transformations

et al. 2019

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“…As is well known, for modeling of such complex plasmonic nanostructures as arrays of metasurfaces, several numerical methods can be used 13 . These methods can be divided into direct ones, such as finite difference or finite element methods -both in time (finite difference time domain) and frequency (finite difference frequency domain) domains, and indirect ones (such as modal methods), both relaying on the solutions of appropriate differential equations (differential approaches).…”

Section: Specification Of the Simulation Tool And Metasurfaces Of Intmentioning

confidence: 99%

“…In terms of the physics of resonances, for such structures, a physically rich interplay of both Fano-type resonances of individual building blocks and lattice resonances due to periodic arrangements is expected. Clearly, understanding of such combined resonances requires a thorough and exact analysis 13 . The efficient exploitation of such advanced structures is based on the understanding of the interaction of light resulting in useful SP resonances, applicable in SPR sensing techniques.…”

Section: Introductionmentioning

confidence: 99%

Morphological studies of resonances in plasmonic metasurfaces for SPR sensing

et al. 2015

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We investigate selected periodic arrays of nanostructures inspired by metasurfaces originally used in metamaterial structures and evaluate their potential for surface plasmon resonance applicable in sensing. Building blocks including rectangles, cut wires, crosses, fishnets, split ring resonators were ordered on suitable substrates and their reflection (R), transmission (T ), and loss energy (L) spectra were calculated. The numerical studies were performed using our efficient in-house two-dimensional rigorous coupled-wave analysis technique. Our technique incorporates all the key improvements of the method available, taking into account both proper Fourier factorization rules, adaptive spatial resolution techniques, as well as structural symmetries. Using the R, T , and L spectra, we investigated spectral sensitivity of SPR and calculated the respective SPR sensor characteristics, such as figures of merit (FOM), enabling direct comparison of various structural morphologies for potential sensing applications. Also, optimization of the structures in terms of FOM has been performed to identify the most promising candidates. Additionally, to allow for interpretation of spectral resonant features and the interplay of individual and surface lattice resonances, we were gradually changing the morphology of individual building blocks from one type of element to another one. We believe that this study will bring insight into plasmonic behavior of nanostructured metasurfaces and will further benefit research into SPR biosensors.

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“…The prosperous fabrication of such metamaterials, emerged a prominent consideration in the exploration of metamaterials by scientists from the diverse arenas. The realization of metamaterials paved the pathway for various tremendous applications, such as sub-wavelength imaging, solar cell design, and antennas [7][8][9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

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2020

DJNB

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In this study, Finite Difference Time Domain (FDTD) is employed to model and simulate both dielectric materials and metamaterials. Interestingly, the metamaterials own very peculiar characteristics that are related to the simultaneous negative permittivity and permeability. Based on FDTD technique, we can simulate the electromagnetic devices with the inclusion of the simultaneous electric and magnetic fields over time. The striking features of metamaterials illustrate the increase and backward propagation as well as the energy absorption in one-dimensional (1D) or two-dimensional (2D) systems. These systems could have potential applications, such as metamaterial superlens.

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Computational Electromagnetics in Plasmonics

Cited by 7 publications

References 40 publications

Applications of Plasmon-Enhanced Nanocatalysis to Organic Transformations

Applications of Plasmon-Enhanced Nanocatalysis to Organic Transformations

Morphological studies of resonances in plasmonic metasurfaces for SPR sensing

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