FDTD Modelling of Triangular Gold Nanoparticle Pairs

2014 ◽  
Vol 703 ◽  
pp. 220-223
Author(s):  
Yang Fan
Keyword(s):  
Electric Field ◽  
Gold Nanoparticle ◽  
Time Domain ◽  
Finite Difference Time Domain ◽  
Fdtd Method ◽  
Field Enhancement ◽  
Electric Field Enhancement ◽  
Plasmon Resonances ◽  
Simulation Results ◽  
Difference Time

The optical properties of triangular gold nanoparticle pairs are investigated by numerical simulations using Finite-difference time-domain (FDTD) method. The simulation results show the significant red shifts of plasmon resonances as the size of nanoparticle is increased. The large electric field enhancement is also verified by calculating the local electric field distributions.

Optimization of electric field enhancement of Ag@SiO2 trimer nanospheres by finite difference time domain method

2019 ◽  
Vol 495 ◽  
pp. 143547 ◽  
Author(s):  
Anitharaj Nagarajan ◽  
Aruna Priya Panchanathan ◽  
Pandian Chelliah ◽  
Hiroaki Satoh ◽  
Hiroshi Inokawa
Keyword(s):  
Finite Difference ◽  
Electric Field ◽  
Time Domain ◽  
Finite Difference Time Domain ◽  
Field Enhancement ◽  
Time Domain Method ◽  
Electric Field Enhancement ◽  
Domain Method ◽  
Difference Time

scholarly journals Broadband localized electric field enhancement produced by a single-element plasmonic nanoantenna

RSC Advances ◽  
2017 ◽  
Vol 7 (4) ◽  
pp. 2074-2080 ◽  
Author(s):  
Zhengdong Yong ◽  
Chensheng Gong ◽  
Yongjiang Dong ◽  
Senlin Zhang ◽  
Sailing He
Keyword(s):  
Finite Difference ◽  
Electric Field ◽  
Time Domain ◽  
Finite Difference Time Domain ◽  
Field Enhancement ◽  
Multipole Expansion ◽  
Single Element ◽  
Electric Field Enhancement ◽  
Difference Time ◽  
Novel Design

We propose a novel design of a broadband plasmonic nanoantenna, investigate it numerically using finite-difference time-domain methods, and explain its performance using the analysis of charge distribution in addition to a multipole expansion.

An Algorithm of 3-D ADI-R-FDTD Based on Non-Zero Divergence Relationship

2011 ◽  
Vol 317-319 ◽  
pp. 1172-1176
Author(s):  
Xiu Hai Jin ◽  
Yi Wang Chen ◽  
Pin Zhang
Keyword(s):  
Magnetic Field ◽  
Finite Difference ◽  
Electric Field ◽  
Time Domain ◽  
Finite Difference Time Domain ◽  
Fdtd Method ◽  
Memory Requirement ◽  
Alternating Direction ◽  
Relationship Of ◽  
Difference Time

In this letter, an alternating-direction reduced finite-difference time-domain (ADI-R-FDTD) method is presents. It is proven that the divergence relationship of electric-field and magnetic-field is non-zero even in charge-free regions, when the electric-field and magnetic-field are calculated with alternating-direction finite-difference time-domain (ADI-FDTD) method in 3 dimensions case, and the expression of the divergence relationship is derived. Based on the non-zero divergence relationship, the ADI-FDTD method is combined with the reduced finite-difference time-domain (R-FDTD) method. In the proposed method, the memory requirement of ADI-R-FDTD is reduced by1/12 of the memory requirement of ADI-FDTD averagely in 3D case. The formulation is presented and the accuracy and efficiency of the proposed method is verified by comparing the results with the conventional results.

ENHANCED TRANSMITTANCE AND RESOLUTION OF PHOTONIC CRYSTAL FLAT LENS BY SURFACE-EDGE ENGINEERING

2012 ◽  
Vol 26 (18) ◽  
pp. 1250113
Author(s):  
HAO GUO ◽  
CANCAN WANG ◽  
PEIYUAN ZHANG ◽  
HONGJUN CHEN ◽  
YUN LI ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Cross Section ◽  
Time Domain ◽  
Finite Difference Time Domain ◽  
Fdtd Method ◽  
Flat Lens ◽  
Simulation Results ◽  
Difference Time ◽  
Reflection Grating ◽  
Method Show

We proposed a novel two-dimensional (2D) photonic crystal (PC) flat lens based on the surface-edge engineering of a PC slab, operating as an n = -1 superlens at λ = 1.55 μm. The cross-section at the truncated edge of the flat lens is similar to an "anti-reflection grating", which is employed to reduce the reflectivity of propagative waves. The PC flat lens with a low reflectance of 1% was realized by the proposed truncated surface-edge for an InP / InGaAsP / InP 2D PC slab. The simulation results obtained with finite-difference time-domain (FDTD) method show that a PC flat super lens with a far-field resolution of 0.41 λ and a high transmittance of 81.9% can be achieved by the engineering of the truncated surface-edge at hetero-interface.

Design and Analysis of 2D Photonic Crystal Waveguides for High Coupling Efficiency

2007 ◽  
Vol 31 ◽  
pp. 27-29
Author(s):  
Ming Wu ◽  
Hai Rong Liu ◽  
Wei Jun Tong ◽  
De Xiu Huang
Keyword(s):  
Photonic Crystal ◽  
Time Domain ◽  
Finite Difference Time Domain ◽  
Dielectric Waveguide ◽  
Fdtd Method ◽  
Coupling Efficiency ◽  
Photonic Crystal Waveguide ◽  
Photonic Crystal Waveguides ◽  
Simulation Results ◽  
Difference Time

In this paper we have proposed a photonic crystal structure to enhance the coupling efficiency between photonic crystal waveguide (PCW) and the conventional dielectric waveguide. The proposed waveguide characterized with employing the taper structure and varying the holes’ radius in the taper. Two-dimensional (2D) finite-difference time-domain (FDTD) method has been used to analyze the structure. The simulation results show that the coupling efficiency can be achieved as high as 81.6% at the wavelength of 1.55um.

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