Surface Current Distribution


#1

Dear community,

May i know how can i obtain the surface current distribution just like in the figure attached?

I am not sure if i am allowed to post the image but the reference is here:
Dipolar Resonance Enhancement and Magnetic Resonance in CrossCoupled Bow-Tie Nanoantenna Array by Plasmonic Cavity


#2

Hi @wxlim1,

There is the exmaple of how to calculate the surface charge density in a KB wesite, you can refer to it. This could be a guidline for you.


#3

Hi @isawjsy,

I have looked at the example before, but it does not indicate the direction of the flow of electrons.
Is it possible to include it with the surface current distribution plot?


#4

Hi @wxlim1,

If you want to add the field vectors in the plot, you can refer to this KB page. After exporting your field data as a Matlab format, you can plot the field vector data with arrows using the quiver command.


#5

Hi @isawjsy,

Thanks for your insights. :slight_smile:


#6

Hi @wxlim1,

Thank you for your comment. I hope that it will help you out!


#7

hello, have you solved this problem?

I am facing the same problem. I know that using “getdata” can extract the data in an electric field monitor, but at this time, i have to get data from a analysis group, so how can I do it and plot the surface current with arrows?


#8

@syxiao

Hi, you can look at this example which shows you how to calculate the surface current of a resonance.
https://kb.lumerical.com/en/metamaterials_thz_chen.html

The one in this thread actually shows you how to obtain the field vectors.