- Nothing amuses more harmlessly than computation and nothing is oftener applicable to real business or speculative enquiries. A thousand stories which the ignorant tell, and believe, die away at once, when the computist takes them in his grip.
- Samuel Johnson
CASTEP is a leading code for calculating the properties of materials from first principles. Using density functional theory, it can simulate a wide range of properties of materials proprieties including energetics, structure at the atomic level, vibrational properties, electronic response properties etc. In particular it has a wide range of spectroscopic features that link directly to experiment, such as infra-red and Raman spectroscopies, NMR, and core level spectra.
Discovery of graphane, a new extended 2-dimensional hydrocarbon CASTEP was used to predict the existence and stability of a new extended hydrocarbon named graphane with formula CH. One hydrogen atom is bonded to each C in a graphene sheet alternating above and below in a chair confirmation. The theoretical prediction was later confirmed by experimental synthesis. ref.