Model Exchange

Mie scattering off plasmonic nanoparticles

Romain Fleury, UT Austin

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 wang
Mar 12, 2013 at 8:15pm UTC

This model will be helpful to my research.
However,my computer can not open version 4.3a.

Can you provide the model in comsol 4.3 version?

Thanks a lot.

Mohamed Ali Basyooni Mohamed
Mar 17, 2013 at 5:43pm UTC

Thank u for your time

also this model can not open in my computer.
also please can u provide it in comsol 4.3 or 4.2 ?

Thanks in advance

Romain Fleury
Entry 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.

Thank you.

Ashutosh Diwakar
Mar 19, 2013 at 4:37am UTC

Kindly, if possible, could you provide the same in v4.2, as I've COMSOL v4.2.
Thanks a lot!

Xiaoxin wang
Mar 19, 2013 at 3:54pm UTC

Thanks. The comsol 4.3 runs well in my computer.

Mohamed Ali Basyooni Mohamed
Mar 21, 2013 at 12:04pm UTC

thank u very much. it works so well

Tianjing Guo
Jul 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.

Shilpi Shital
Oct 26, 2013 at 8:45am UTC

Thanks..your model was really helpful

Angelo Garruzzo
Nov 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!
thank you in advance

Katarzyna Kluczyk
Dec 16, 2013 at 10:42pm UTC

Hi, may I ask for model in 4.2 version.
Thank you!

behzad sardari
Feb 3, 2014 at 10:00am UTC

Comment removed by behzad sardari.

Feb 8, 2014 at 9:42am UTC

Thank you very much !

Song Yue
Feb 28, 2014 at 8:56am UTC

Thank you very much for your sharing.

xiaorui tian
Mar 6, 2014 at 8:20am UTC

thanks so much! it helps a lot.

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