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Meshing over large changes in scale

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Hi Everyone,

I am trying to mesh a geometry which has a large difference in scale between components (from mm to nm scales). The free mesher always fails with

Error: 4029
Failed to insert point.
- x coordinate: 5.04031e-005
- y coordinate: 0.002645
- z coordinate: 2.74364e-007
An empty cavity was generated.

and the swept mesher fails with an invalid topology message, probably due to to the fact that there are two boundaries defined on one face but not the opposing face (making the topology inconsistent). Does anyone have any suggetions on methods I might try to successfully mesh this model?

Additionally I have read (cds.comsol.com/access/dl/papers/5376/Buchau.pdf) that it is possible to use models done in hypermesh as comsol meshes. However whenever I attempt to import such models as mesh files, it creates the model without any subdomains (making it impossible to solve anything). Has anyone had any success with using hypermesh in this regard?

Kind Regards,
Jon

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