Menu

Discussion Forum

New Discussion
Filtrer

Note: This discussion is about an older version of the COMSOL Multiphysics® software. The information provided may be out of date.

Discussion Closed This discussion was created more than 6 months ago and has been closed. To start a new discussion with a link back to this one, click here.

about impedance of microdisk electrode

Posted 24 déc. 2010, 00:50 UTC−5 Low-Frequency Electromagnetics, Chemical Reaction Engineering Version 4.0 6 Replies

Shoui Kawakita
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

I want to calculate impedance of microelectrode.
In this paper impedance is calculated by COMSOL.

[ C. Gabrielli, M. Keddam, V. Vivier, J.Phys.Chem. B, 110, 20478-20485 (2006)]


Could anyone tell me how to calculate this impedance by COMSOL.
6 Replies Last Post 27 déc. 2010, 20:52 UTC−5
Ivar KJELBERG COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

Posted: 1 decade ago 24 déc. 2010, 04:49 UTC−5
Hi

in which version ? in anycase check the doc (do an indexed search) and use the lumped ports, the work is then mostly done by COMSOL

--
Good luck
Ivar
Hi in which version ? in anycase check the doc (do an indexed search) and use the lumped ports, the work is then mostly done by COMSOL -- Good luck Ivar
Shoui Kawakita
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

Posted: 1 decade ago 24 déc. 2010, 09:37 UTC−5
Hello. Mr. Ivar

I use COMSOL ver.4.0 to simulate microelectrode's impedance.


I am Japanese,so I am poor at English.
Could you tell me the meaning of [anycae] and[lumped ports] in easy expression?


Shoui Kawakita
Hello. Mr. Ivar I use COMSOL ver.4.0 to simulate microelectrode's impedance. I am Japanese,so I am poor at English. Could you tell me the meaning of [anycae] and[lumped ports] in easy expression? Shoui Kawakita
Ivar KJELBERG COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

Posted: 1 decade ago 24 déc. 2010, 12:17 UTC−5
Hi

sorry I was typing too quickly I have corrected the typo.

If you are using 4.0, then find out how to get 4.1 and update it with latest patch (main web site "updates") as there are several errors or complications in it's use This is much easier in 4.1 and the doc is also better
--
Good luck
Ivar
Hi sorry I was typing too quickly I have corrected the typo. If you are using 4.0, then find out how to get 4.1 and update it with latest patch (main web site "updates") as there are several errors or complications in it's use This is much easier in 4.1 and the doc is also better -- Good luck Ivar
Shoui Kawakita
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

Posted: 1 decade ago 26 déc. 2010, 20:27 UTC−5
Dear Mr. Ivar.


Thank you for your reply. So you mean it is difficult to simulate diffusion impedance of microelectrode?

In Version4.0, I found [Surface integration]comand in Derived Values Comand. I think it comand can display the flux on the electrode surface. Use this value I thnk I can calculate impedance use fourier expression.

How do you think this plan?
Dear Mr. Ivar. Thank you for your reply. So you mean it is difficult to simulate diffusion impedance of microelectrode? In Version4.0, I found [Surface integration]comand in Derived Values Comand. I think it comand can display the flux on the electrode surface. Use this value I thnk I can calculate impedance use fourier expression. How do you think this plan?
Ivar KJELBERG COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

Posted: 1 decade ago 27 déc. 2010, 02:23 UTC−5
Hi

I do not say it's difficult, it is just that depending on how you set up the model, you must either write out the formulas, and the integrations, yourself fully (as you are saying) or often if you can use the lumped "port" BC you have most impedance calculation already prepared.

The best way to learn is do go through several of the examples in the model library:

for that use rather >= v4.1 (far more models available)
1) printout the pdf
2) follow the steps of the pdf,
3) then compare to the model itself already prepared that you also find side-by side with the pdf

--
Good luck
Ivar
Hi I do not say it's difficult, it is just that depending on how you set up the model, you must either write out the formulas, and the integrations, yourself fully (as you are saying) or often if you can use the lumped "port" BC you have most impedance calculation already prepared. The best way to learn is do go through several of the examples in the model library: for that use rather >= v4.1 (far more models available) 1) printout the pdf 2) follow the steps of the pdf, 3) then compare to the model itself already prepared that you also find side-by side with the pdf -- Good luck Ivar
Shoui Kawakita
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

Posted: 1 decade ago 27 déc. 2010, 20:52 UTC−5
Thank you Mr. Ivar.

Because the version which we use is ver.4.0,so I'll try to make model myself.

Shoui Kawakita
Thank you Mr. Ivar. Because the version which we use is ver.4.0,so I'll try to make model myself. Shoui Kawakita

Note that while COMSOL employees may participate in the discussion forum, COMSOL® software users who are on-subscription should submit their questions via the Support Center for a more comprehensive response from the Technical Support team.

Suggested Content