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In this tutorial you will learn how to use the Builder in VNL to construct one of the most famous molecular junctions – a dithiole-benzene, DTB (sometimes also known as benzene-dithiole, BDT) embedded between two gold (111) surfaces.
The work flow described below will walk you through a rather broad overview of the various tools in the Builder. The individual operations are not specific for this surface and this molecule, but can be applied to any other molecule or similar structure. This is the idea of the Builder – by applying a specific sequence of generic operations, you can easily build even highly specialized structures.
The steps are:
The instructions below may appear a bit complicated, since each step contains many operations, but with a bit of training the whole process can be carried out in under 5 minutes. Also remember - if you make a mistake anywhere along the line, use Undo (Ctrl+Z)!
The molecule is now ready.
You now have a complete central region, and the only thing remaining is to convert it to a device configuration.