Introduction to the Finite Element Method in Electromagnetics

Polycarpou, Anastasis C.

doi:10.2200/s00019ed1v01y200604cem004

Cited by 81 publications

(57 citation statements)

References 27 publications

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“…As illustrated in Figure 7 for a nanorod dimer, this hybridization model offers a good explanation for both the hot spot formation and the red shift in plasmon resonance wavelength. The hybridized plasmon modes in a dimer can be monitored by directly solving Maxwell's equations numerically using techniques such as finite-difference time-domain (FDTD) [91] or finite-element method (FEM) [92]. Nevertheless, it is always profitable to seek for a theoretical model that could provide deeper insights on the physics governing the hybridization.…”

Section: Strongly Coupled Plasmonic Nanostructures 231 Dimersmentioning

confidence: 99%

Optical interactions in plasmonic nanostructures

Park

2014

Nano Convergence

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We present a review of plasmonic nanostructures in which the constituent materials are coupled together by optical interactions. The review first provides a comprehensive coverage of theoretical framework where the optical interactions are described by the multiple scattering among the nanostructures. We then discuss the two limiting cases of weak and strong interactions. The weak interaction regime is described well by the effective medium theory while the strong interaction regime requires theoretical tools that can describe the new eigenmodes delocalized over the entire system. Weakly interacting plasmonic nanostructures have been studied extensively in the metamaterials research, which has been a major research thrust in photonics during the past decade. This review covers some of the latest examples exhibiting perfect absorption and invisibility. Strongly coupled systems started to receive attention recently. As a representative example, plasmonic molecules exhibiting Fano resonance are discussed in detail. Plasmonic nanostructures offer an excellent platform to engineer nanoscale optical fields. With the recent progress in nanofabrication technologies, plasmonic nanostructures offer a highly promising pathway to discovering new phenomena and developing novel optical devices.

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Section: Strongly Coupled Plasmonic Nanostructures 231 Dimersmentioning

confidence: 99%

Optical interactions in plasmonic nanostructures

Park

2014

Nano Convergence

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“…The FEM model could solve non-linear problems through the discretization process, in which continuous problems are converted into discrete problems (Casadei, Gabellini 1997;Koo et al 2014c;Polycarpou 2006;Seo et al 2015, Stromberg et al 2012Unger et al 2006). Generally, the FEM model could be established in three processes: (i) determination of the finite element; (ii) determination of the shape function; and (iii) development of the interpolation function.…”

Section: Step 3: Estimation Of the Madsr Data In The 89 Unmeasured Lomentioning

confidence: 99%

Development of the Monthly Average Daily Solar Radiation Map Using a-Cbr, Fem, and Kriging Method

Koo

Hong

Jeong

et al. 2017

Technological and Economic Development of Economy

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Abstract. Photovoltaic (PV) system could be implemented to mitigate global warming and lack of energy. To maximize its effectiveness, the monthly average daily solar radiation (MADSR) should be accurately estimated, and then an accurate MADSR map could be developed for final decisionmakers. However, there is a limitation in improving the accuracy of the MADSR map due to the lack of weather stations. This is because it is too expensive to measure the actual MADSR data using the remote sensors in all the sites where the PV system would be installed. Thus, this study aimed to develop the MADSR map with improved estimation accuracy using the advanced case-based reasoning (A-CBR), finite element method (FEM), and kriging method. This study was conducted in four steps: (i) data collection; (ii) estimation of the MADSR data in the 54 unmeasured locations using the A-CBR model; (iii) estimation of the MADSR data in the 89 unmeasured locations using the FEM model; and (iv) development of the MADSR map using the kriging method. Compared to the previous MADSR map, the proposed MADSR map was determined to be improved in terms of its estimation accuracy and classification level.

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“…Through this paper, the finite element method (FEM) [23][24][25][26] is used to demonstrate the tag antenna performance.…”

Section: Fractal Antenna; Structure and Analysismentioning

confidence: 99%

Fractal Antenna for Passive Uhf Rfid Applications

Zainud-Deen¹,

Malhat²,

Awadalla³

2009

PIER B

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Abstract-This paper addresses the design of fractal antennas placed onto dielectric object in the UHF RFID band and introduces a tag antenna configuration of simple geometry having impedance tuning capability. Through the paper, the dimensions of the fractal antenna are optimized to improve the impedance matching with the chip impedance. The tag performance changes are studied when it is placed on different objects (e.g., cardboard boxes with various content), or when other objects are present in the vicinity of the tagged object. It has been shown that a tag antenna can be designed or tuned for optimum performance on a particular object. Using the finite element method the open circuit voltage and the polarization mismatch factor against the operating frequency are calculated. The input impedance, reflection coefficient, power transmission coefficient and the read range as a function of frequency are illustrated. The performance of the tag antenna in the presence of the dielectric box and different object materials inside the box is illustrated. The effect of the objects that are placed in the center of the dielectric box didn't have a significant effect on the performance of the tag antenna; there is a small shift in the resonance frequency but still within the operating frequency band. Both the power transmission coefficient and the read range change with the object material. The backscattering properties of the tag antenna have been studied. The differential radar cross-section of the tag antenna is calculated for different antenna loads.Corresponding author: H. A. Malhat (er honida@yahoo.com). 210Zainud-Deen, Malhat, and Awadalla

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Introduction to the Finite Element Method in Electromagnetics

Cited by 81 publications

References 27 publications

Optical interactions in plasmonic nanostructures

Optical interactions in plasmonic nanostructures

Development of the Monthly Average Daily Solar Radiation Map Using a-Cbr, Fem, and Kriging Method

Fractal Antenna for Passive Uhf Rfid Applications

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