Greetings!
Im a graduate student at Hogskolen i Vestfold in Norway. As a part of my project I need to make a model of a capacitance sensor that is based on thin film Au electrodes on a Pyrex substrate covered with PTFE film.
The problem is that when I build electrodes with their real geometry I am unable to mesh them. The electrodes have a very, very high aspect ratio being only 100nm thick but about 10cm long. Meshing this as a free tetrahydral mesh takes unreasonably long - 2-3% per hour(never actualy finished meshing), so I tried using boundry layer meshing: selected boundry layer from mesh tab, selected the domains I wanted to mesh that way, on boundry layer properties selected the number of boundry layers to be 1 and first layer thickness equal to layers total thickness - 100nm. Meshing goes faster but still freezes at about 30% of creating innitial free mesh.
When I set the electrode thickness to a greater value like 10-100um instead of 100nm the model meshes with no problem and produces plausible C values.
Im confused... Is there any way to mesh this problem? The interdigital thin film electrode geametry is in the picture attached.
Any help apreciated.
Cheers!
- Fjodor
Im a graduate student at Hogskolen i Vestfold in Norway. As a part of my project I need to make a model of a capacitance sensor that is based on thin film Au electrodes on a Pyrex substrate covered with PTFE film.
The problem is that when I build electrodes with their real geometry I am unable to mesh them. The electrodes have a very, very high aspect ratio being only 100nm thick but about 10cm long. Meshing this as a free tetrahydral mesh takes unreasonably long - 2-3% per hour(never actualy finished meshing), so I tried using boundry layer meshing: selected boundry layer from mesh tab, selected the domains I wanted to mesh that way, on boundry layer properties selected the number of boundry layers to be 1 and first layer thickness equal to layers total thickness - 100nm. Meshing goes faster but still freezes at about 30% of creating innitial free mesh.
When I set the electrode thickness to a greater value like 10-100um instead of 100nm the model meshes with no problem and produces plausible C values.
Im confused... Is there any way to mesh this problem? The interdigital thin film electrode geametry is in the picture attached.
Any help apreciated.
Cheers!
- Fjodor
