Computation of the Field Enhancement by Small Facet Angles of Metallic Nanoparticles:Adaptive Remeshing for Finite Element Method
The accurate calculation of the electromagnetic field enhancement around nanoparticles that exhibit facets with small angles is of interest to characterize their effciency,given the experimental reproducibility of such structures.The finite element method is effcient to compute the enhancement of the field intensity at the surface of nanoparticles although the numerical results strongly depends on the mesh of the domain.An adaptive remeshing method is shown to be robust where the classical refinement method fails.The adaptive refinement method uses a posteriori error estimator with interpolation method of the physical field of interest,based on the residual method.The strategy of this method is to remesh the domain of calculation on the basis of the map of the physical and geometrical size that will ensure compliance with the initial geometry and the accuracy of the physical solution.The numerical application shows that the intensity enhancement computed near the vertex between facets with small angles(5°)can reach 23%.
F.Mezghani D.Barchiesi A.Cherouat T.Grosges H.Borouchaki
Project Group for Automatic Mesh Generation and Advanced Methods Gamma3 Project(UTT-INRIA),University of Technology of Troyes,France
国际会议
Progress in Electromagnetics Research Symposium 2014(2014年电磁学研究新进展学术研讨会)
广州
英文
509-513
2014-08-01（万方平台首次上网日期，不代表论文的发表时间）