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 The information provided may be out of date.

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Plotting in air, postprocessing, 4.2a, RF module

Posted 2012年10月25日 GMT-4 06:53 RF & Microwave Engineering Version 4.2a 4 Replies

Samuel Roj
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Dear All,

I have some issue. I made some calculation of gold nanosphere on substrate, and now I want to plot normalized electric field.

BUt, thing is I want to plot emw.norm^2 not just on sphere, also I want to plot it in air, but as I see air is invisible. Everything is blue like there is no any enhancement very close around sphere, and I done some calculations (point evaluation etc) and I am absolutetly sure there is field. Also I simulated dipole antenna, and I want to plot field in the gap (so air), there is no nothing.


Is there some option to make air visible??

Thanks in advanced
4 Replies Last Post 2012年10月26日 GMT-4 07:13
Ivar KJELBERG COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)
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Posted: 1 decade ago 2012年10月25日 GMT-4 09:04
Hi

You need to include air and its material properties around your "sphere", but you must also tell us which physics you are using and if possible more about your model. like that its difficult to say something ;)

--
Good luck
Ivar
Hi You need to include air and its material properties around your "sphere", but you must also tell us which physics you are using and if possible more about your model. like that its difficult to say something ;) -- Good luck Ivar
Samuel Roj
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Posted: 1 decade ago 2012年10月25日 GMT-4 11:31

Hi

You need to include air and its material properties around your "sphere", but you must also tell us which physics you are using and if possible more about your model. like that its difficult to say something ;)

--
Good luck
Ivar


Dear Ivar, thank you for response.


This is my module, I sent you just simple version for one wavelength.

So, I want plot electric field in air between spheres, beacuse definately there is enhancement. You can see that in point evaluation for these wavelengths. I calculated enhancement of E field in the middle of gap. So as you can see on picture, I can see electric field in glass, gold, everywhere except air. Air is invisible.

When you open model you can see how it is look like on spheres.


Thanks in advanced for every help.
[QUOTE] Hi You need to include air and its material properties around your "sphere", but you must also tell us which physics you are using and if possible more about your model. like that its difficult to say something ;) -- Good luck Ivar [/QUOTE] Dear Ivar, thank you for response. This is my module, I sent you just simple version for one wavelength. So, I want plot electric field in air between spheres, beacuse definately there is enhancement. You can see that in point evaluation for these wavelengths. I calculated enhancement of E field in the middle of gap. So as you can see on picture, I can see electric field in glass, gold, everywhere except air. Air is invisible. When you open model you can see how it is look like on spheres. Thanks in advanced for every help.

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Edgar Kaiser
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Posted: 1 decade ago 2012年10月26日 GMT-4 03:46

It looks like the inner upper half sphere is missing and the outer one is incomplete. Something is wrong with your geometry definition. You can see it in the material nodes.

Cheers
Edgar
It looks like the inner upper half sphere is missing and the outer one is incomplete. Something is wrong with your geometry definition. You can see it in the material nodes. Cheers Edgar
Samuel Roj
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Posted: 1 decade ago 2012年10月26日 GMT-4 07:13

It looks like the inner upper half sphere is missing and the outer one is incomplete. Something is wrong with your geometry definition. You can see it in the material nodes.

Cheers
Edgar


Thanks very much Edgar,

I solved problem, problem was with geometry.

Regards
[QUOTE] It looks like the inner upper half sphere is missing and the outer one is incomplete. Something is wrong with your geometry definition. You can see it in the material nodes. Cheers Edgar [/QUOTE] Thanks very much Edgar, I solved problem, problem was with geometry. Regards

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