Subsequent versions here Overview of NanoCAD NanoCAD is a computer program for designing small molecules and seeing what they do. It helps you to build up 3D structures of atoms and model the mechanics of such structures. I hope that NanoCAD will prove useful in two areas. First, it should evolve over time into a useful freeware CAD system for designing and testing nanotechnological widgets. Second, it should be easy enough to use and run on sufficiently inexpensive hardware that it can be used as a teaching aid in chemistry courses.
Controls have simple names or icons to indicate their functions.
Modelling Molecular Mechanics NanoCAD knows how the mechanics of atomic bonds works. Given a molecule, it can compute the force vectors acting on each of the atoms. With this information, NanoCAD can find the minimum-energy configuration of a molecule in three dimensions, or it can simulate mechanical vibrations and other interactions within a molecule or between two molecules. Software Overview NanoCAD's user interface is written in Scheme, which runs on a modified version of the STk interpreter. The Scheme portion of NanoCAD should be fairly easy to customize.