Metallic Cylinder 2D
中文/English
Metal cylinder 2D TM (Ex Ez Hy)
Metal cylinder 2D TM (Ex Ez Hy)
Comparison of FonSinEM simulation and analytical solution (Mie theory)
Comparison of FonSinEM simulation and analytical solution (Mie theory)
2D (TM) metal cylinder (Y-axis infinity)- To simulate the scattering-absorption spectrum in optical range
2D (TM) metal cylinder (Y-axis infinity)- To simulate the scattering-absorption spectrum in optical range
The radius of cylinder is 200 nm (diameter = 400 nm), and the material is silver (Ag)
The radius of cylinder is 200 nm (diameter = 400 nm), and the material is silver (Ag)
Add the boundary of the CAD files (FreeCAD)
Add the boundary of the CAD files (FreeCAD)
Reference : 3D-CAD Simulation & Examples
Reference : 3D-CAD Simulation & Examples
Due to FreeCAD default unit is mm, and in this case the sphere unit is nm. If use nm unit in FreeCAD, the resolution of output STL file will not enough. So, at here express
Due to FreeCAD default unit is mm, and in this case the sphere unit is nm. If use nm unit in FreeCAD, the resolution of output STL file will not enough. So, at here express
"the unit can directly transform between any unit, nm <=> um <=> mm "
"the unit can directly transform between any unit, nm <=> um <=> mm "
FreeCAD:
FreeCAD:
Diameter of cylinder : 0.4 mm = 400 um
Diameter of cylinder : 0.4 mm = 400 um
Boundary length: 1 mm = 1000 um
Boundary length: 1 mm = 1000 um
Define Parameters
Define Parameters
1. Selected the simulation dimension.
1. Selected the simulation dimension.
2. Define total x, y, z length that equal to CAD, and then set a appropriate resolution.
2. Define total x, y, z length that equal to CAD, and then set a appropriate resolution.
3. Import CAD files.
3. Import CAD files.
4. Define the material of each CAD.
4. Define the material of each CAD.
5. Press【建立網格 Cad to Grids (Create)】button to create simulation grids.
5. Press【建立網格 Cad to Grids (Create)】button to create simulation grids.
(FreeCAD : um ==> FonSinEM : nm )
(FreeCAD : um ==> FonSinEM : nm )
FreeCAD
FreeCAD
diameter of cylinder: 0.4 mm = 400 um
diameter of cylinder: 0.4 mm = 400 um
length of the boundary: 1 mm = 1000 um
length of the boundary: 1 mm = 1000 um
FonSinEM
FonSinEM
Attention! the X, Z length define 1000, unit is nm
Attention! the X, Z length define 1000, unit is nm
and the cylinder will be 400 nm in FonSinEM
and the cylinder will be 400 nm in FonSinEM
"the unit can directly transform between any unit, nm <=> um <=> mm "
"the unit can directly transform between any unit, nm <=> um <=> mm "
setup the dielectric constant of metal gold (using Electrical Model 1)
setup the dielectric constant of metal gold (using Electrical Model 1)
instruction webpage : Electric & Magnetic Models
instruction webpage : Electric & Magnetic Models
A. Define the boundary conditions
A. Define the boundary conditions
B. Press the【創建 (Create)】button => Create the total grid size (Include the boundary condition & add space)
B. Press the【創建 (Create)】button => Create the total grid size (Include the boundary condition & add space)
To simulate the Scattering-Absorption spectrum, select the (TFSF-RCS) radar cross section source
To simulate the Scattering-Absorption spectrum, select the (TFSF-RCS) radar cross section source
Checked out the simulation geometries, and then press 【輸出 Output】button to output the geometries files
Checked out the simulation geometries, and then press 【輸出 Output】button to output the geometries files
Data_Materials.csv // (simulation index of structures)
Data_Materials.csv // (simulation index of structures)
Comparison of FonSinEM simulation and analytical solution (Mie theory)
Comparison of FonSinEM simulation and analytical solution (Mie theory)
Mie theory software
MieLab:
A Software Tool to Perform Calculations on the Scattering of Electromagnetic Waves by Multilayered Spheres
http://www.hindawi.com/journals/ijs/2011/583743/
Nmie:
https://nanohub.org/resources/8228
http://juluribk.com/2010/05/11/nmie-extinction-scattering-and-absorption-efficiencies-of-multilayer-nanoparticles/
This website contains many freeware,FDTD、FEM、Ray tracing method and mie theory codes
http://www.scattport.org/diogenes.iwt.uni-bremen.de/vt/scattport/index.php/light-scattering-software/mie-type-codes.html