Conduction in Metal/insulator/Metal s... Log Out | Topics | Search
Moderators | Register | Edit Profile

FlexPDE User's Forum » User Postings » Conduction in Metal/insulator/Metal systems « Previous Next »

Author Message
Top of pagePrevious messageNext messageBottom of page Link to this message

Vilmay Maxime (vilmay)
New member
Username: vilmay

Post Number: 1
Registered: 11-2007
Posted on Tuesday, November 27, 2007 - 08:08 am:   

Hello,

I would like to simulate the conduction in a Metal/Insulator/Metal system.
I did a little simulation of the field. But I have some problem with the current. You can show it on attached file. The conduction in this insulator is not ohmic (I is not equal to E/R) but it's a Poole Frenkel conduction : I=A*E*exp(B*E). In second files the field repartition is not good why? Could You help me?
application/octet-stream
Field MIM.pde (1.4 k)
application/octet-stream
conduction MIM.pde (1.6 k)
Top of pagePrevious messageNext messageBottom of page Link to this message

Robert G. Nelson (rgnelson)
Moderator
Username: rgnelson

Post Number: 1005
Registered: 06-2003
Posted on Tuesday, November 27, 2007 - 02:06 pm:   

In you conduction problem, you have defined the equation wrong.

1) You defined J=vector(jx,jx) {second component is wrong}.
This is why div(J)=0 didn't work.

2) Then you expanded the equation to dx(Jy)+dy(Jx)=0 {arguments are reversed }
This equation doesn't work either.

Simply define J=vector(Jx,Jy) and use Div(J)=0 and everything works.
Top of pagePrevious messageNext messageBottom of page Link to this message

Vilmay Maxime (vilmay)
New member
Username: vilmay

Post Number: 2
Registered: 11-2007
Posted on Wednesday, November 28, 2007 - 03:28 am:   

ok!

Thank you for your help. If I need some answers to my problems I'll come back to you.

Regards

Add Your Message Here
Post:
Username: Posting Information:
This is a private posting area. Only registered users and moderators may post messages here.
Password:
Options: Enable HTML code in message
Automatically activate URLs in message
Action:

Topics | Last Day | Last Week | Tree View | Search | Help/Instructions | Program Credits Administration