Molecular Structure of the Crystal Surface

Both the impurity and the crystal surface determine the strength of the interaction. A crystal has several crystal surfaces, which might have totally different molecular structures. Crystal faces are identified by Miller indices, which indicate how the faces are cut from the crystal unit cell. Figure 3 shows a unit cell and two crystal surface structures for the compound RDX (cyclotrimethylene trinitramine) with different Miller indices. Since the molecular structures are very different, the interactions of the impurity with the surfaces might also be very different. The growth of one face might be blocked because of strong interactions, while the other face can grow freely because the interactions are only minor. This can cause face-specific growth retardation.

Solar Panel Basics

Solar Panel Basics

Global warming is a huge problem which will significantly affect every country in the world. Many people all over the world are trying to do whatever they can to help combat the effects of global warming. One of the ways that people can fight global warming is to reduce their dependence on non-renewable energy sources like oil and petroleum based products.

Get My Free Ebook

Post a comment