An interesting project from the IuE Summer of Code 2014 is a collection of 3D CAD models. On the CAD models page are examples of these devices.

• MOSFET and Single-Gate
• Double-Gate
• Tri Gate
• All-Around-Gate
• FlexFET
• Special Gate-Form Devices

Using the FreeCAD open source CAD modeling software. The student created these models from examples in the literature. There are also tutorials at the bottom of the page for building a Double-Gate MOSFET and Tri-Gate devices.