Filename | Size |
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Mie_scattering_43.mph | 139 KB |

Mie_scattering_43a.mph | 79 KB |

Plasmonic_resonance_Ez.png | 95 KB |

Total_cross_sections.png | 59 KB |

Download all files (Zip-archive) | ~ 296 KB |

## Mie scattering off plasmonic nanoparticles

Romain Fleury, UT Austin

Email:

This is a general model to simulate light scattering off plasmonic or dielectric nano-particles or spherical nano-structures. I computed the total scattering cross-section (SCS), absorption cross-section (ACS), extinction cross-section (ECS), radar cross-section (RCS) and differential scattering cross-section (dSCS) of gold nanoparticles in the near UV, visible and near infrared range. Material properties are taken from peer-reviewed experimental data (P. B. Johnson and R. W. Christy, “Optical Constants of the Noble Metals,” Phys. Rev. B, vol. 6, no. 12, pp. 4370–4379, Dec. 1972). The model can be used as a starting point to compute the absorption and scattering properties of more complicated structures or metamolecules, with broken spherical symmetry and several constituents. This model completes the tutorial file "Optical Scattering off of a gold nano-sphere", by providing efficient ways to compute the total cross-sections. The obtained results match analytical predictions based on Mie theory.

NB : Models compatible with COMSOL 4.3 and 4.3a are available.To visualize the results, you may need to run the file.

## User Comments

Xiaoxin wangMar 12, 2013 at 8:15pm UTC |

This model will be helpful to my research. |

Mar 17, 2013 at 5:43pm UTC |

Thank u for your time |

Romain FleuryEntry submitter Mar 18, 2013 at 1:56pm UTC |

I have posted a second version in 4.3. Feel free to leave a review after you use the file. |

Mar 19, 2013 at 4:37am UTC |

Kindly, if possible, could you provide the same in v4.2, as I've COMSOL v4.2. |

Xiaoxin wangMar 19, 2013 at 3:54pm UTC |

Thanks. The comsol 4.3 runs well in my computer. |

Mar 21, 2013 at 12:04pm UTC |

thank u very much. it works so well |

TianjingJul 19, 2013 at 3:20am UTC |

We add in results: results->3D plot group 2->volume 1, and in the expression, we plot emw.Ez, emw.Ebz, and emw.relEz. We know emw.relEz is the scattered field, and there should be no field in the sphere. But we observed the field in the graphic. Is there anything wrong? Thank u. |

Oct 26, 2013 at 8:45am UTC |

Thanks..your model was really helpful |

Angelo GarruzzoNov 13, 2013 at 9:20pm UTC |

hi may I ask a matlab version of the model... I am interested in the script! I can't open the version that you provided, it would be nice if you could save the model as m-file! |

Dec 16, 2013 at 10:42pm UTC |

Hi, may I ask for model in 4.2 version. |

Feb 8, 2014 at 9:42am UTC |

Thank you very much ! |

SongFeb 28, 2014 at 8:56am UTC |

Thank you very much for your sharing. |

xiaorui tianMar 6, 2014 at 8:20am UTC |

thanks so much! it helps a lot. |

Bhavyabhushan Yadav A.VMay 27, 2014 at 4:35am UTC |

Hi All, |

Phil KinnaneMay 27, 2014 at 9:11pm UTC |

Hi, |

Jun 18, 2014 at 3:08pm UTC |

Thank you. Your models are really helpful. |

Jun 22, 2014 at 3:13pm UTC |

Hello, |

Jun 22, 2015 at 1:06pm UTC |

I also get monotonically rising SCS for a similar model. What Solution did you find? |

Nov 25, 2015 at 11:13pm UTC |

Thank you for your model. |

Jungmin KimJan 12, 2016 at 8:24pm UTC |

Thanks so much! |

MichaelMar 10, 2016 at 2:13pm UTC |

Thank you so much for sharing your model. |

Jun 13, 2016 at 2:10am UTC |

thank you so much |

Manasi PalwankarMay 16, 2017 at 3:38pm UTC |

Thank you so much for the model. Can you please explain the formula for differential scattering cross section (dSCS) used in the model? How can this modified to a 2D model? |

Jul 17, 2017 at 9:04am UTC |

2D model only gives scattering in plane, dear |

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