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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 The information provided may be out of date.

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piezoresistance

Posted May 9, 2012, 11:08 a.m. EDT MEMS & Nanotechnology, MEMS & Piezoelectric Devices, Structural Mechanics Version 4.2a, Version 4.3 4 Replies

ukbayrak
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dear all,

how can i simulate the change of resistance caused by structural deformation of the piezoresistive structure under acceleration field?

thanks in advance
4 Replies Last Post Jun 22, 2012, 3:58 p.m. EDT
Ivar KJELBERG COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)
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Posted: 1 decade ago May 9, 2012, 1:11 p.m. EDT
Hi

I would say you need the structural and some EC type acdc physics and material properties that changes the resistivity w.r.t. the internal stress for the material of your sensor

--
Good luck
Ivar
Hi I would say you need the structural and some EC type acdc physics and material properties that changes the resistivity w.r.t. the internal stress for the material of your sensor -- Good luck Ivar
ukbayrak
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Posted: 1 decade ago Jun 19, 2012, 5:54 a.m. EDT
Firts of all thanks a lot for your reply but my problem is when select them both and click compute it solves both of them seperately and i am not able to get any results. Do you have any idea about it.

Thanks

umut
Firts of all thanks a lot for your reply but my problem is when select them both and click compute it solves both of them seperately and i am not able to get any results. Do you have any idea about it. Thanks umut
Ivar KJELBERG COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)
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Posted: 1 decade ago Jun 22, 2012, 6:17 a.m. EDT
Hi

you need to get the two to exchange something, like a Force, this you must do manually by linking the equations.

--
Good luck
Ivar
Hi you need to get the two to exchange something, like a Force, this you must do manually by linking the equations. -- Good luck Ivar
Bjorn Sjodin COMSOL Employee

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Posted: 1 decade ago Jun 22, 2012, 3:58 p.m. EDT
The new version of the MEMS Module has 3 new dedicated user interfaces for piezoresistivity. Please see:
www.comsol.com/products/4.3/#mems
for more information.
The new version of the MEMS Module has 3 new dedicated user interfaces for piezoresistivity. Please see: http://www.comsol.com/products/4.3/#mems for more information.

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