silhouette material

Hi

I have to create a couple of materials for an STP visualization project on unreal, to show the silhouette on a mesh.

I don’t know anything about materials, so I’m more lost than a penguin in a desert.

From a mesh like this:


311152-
The first material would be to show the silhouette along with the mesh:

And the next would be to show just the silhouette:

Could someone help me with some indication of how to get this in unreal or if it already exists somewhere?

Thanks in advance.