A three-dimensional mesh refinement algorithm with low boundary reflections for the finite-difference time-domain simulation of metallic structures
A three-dimensional mesh refinement algorithm with low boundary reflections for the finite-difference time-domain simulation of metallic structures
复制标题
DOI：
10.1002/jnm.v23:3
复制
发表时间：
2010-05
影响因子：
1.6
通讯作者：
W. Pernice;F. Payne;K. Chaloulos;D. Gallagher
中科院分区：
文献类型：
--
作者：
W. Pernice;F. Payne;K. Chaloulos;D. Gallagher
我们提出了一种方法，包括高网格密度的区域到一个一般的网格在三维的时域有限差分法。通过引入适当的插值方法对缺失的边界点进行插值，显著减少了在不同网格大小的区域之间的边界处发生的反射。使用分层细化架构，可以将若干细化级别包括到一个计算中。该算法是实现与辅助微分方程技术，允许金属结构的模拟。我们说明了该算法的性能，通过模拟的金属纳米粒子包括在一个较粗的网格和调查黄金光学天线。版权所有© 2009约翰威利父子有限公司。
We present a method for including areas of high grid density into a general grid for the finite-difference time-domain method in three dimensions. Reflections occurring at the boundaries separating domains of different grid size are reduced significantly by introducing appropriate interpolation methods for missing boundary points. Several levels of refinement can be included into one calculation using a hierarchical refinement architecture. The algorithm is implemented with an auxiliary differential equation technique that allows for the simulation of metallic structures. We illustrate the performance of the algorithm through the simulation of metal nano-particles included in a coarser grid and by investigating gold optical antennas. Copyright © 2009 John Wiley & Sons, Ltd.