Learning Forum

[Chi Zhang]

Hi,

I'd like to model the effect of a thin layer of oxide on my device capacitance and inductance. This is done by implementing a 10um*5nm strip of oxide on top of the metal (10um*145nm), with the region size at 630um*800um). Simulation throws an error "Couldn't find perimeter of closed object. Possible reason: some dimensions may be too small. Please try classic mesh!"

I previously had a discussion on using classic mesh. I now need to explicitly simulate this small model object with the given region size. Please give advice on what can be done to make the simulation run.

Chi Zhang

[Chi Zhang]

Hi,

Please follow up on this topic. Setting up non-model regions and equating the D field in the case where there would be oxide to calculate the participation ratio has significant limitations in result accuracy. In the 2D solver, I cannot modify the model resolution, nor can I switch to classic mesh. Taken at face value there seem to be a big limitation of the software for calculations related to thin layers.

Chi Zhang

[HDLI]

Hello Chi,

      Is it possible for you to use 3D model with classic mesh? In 2D's initial mesh settings, we can enter a small tolerance for model resolution in advanced tab, but I do not think it can resolve the problem. 

HDLI

 

[HDLI]

Hello Chi,

     Is it possible for you to use 3D model with classic mesh? In 2D's initial mesh setting, we can enter a small tolerance for model resolution in advanced tab, but I do not think it can resolve the problem. Thanks.

HDLI