Introduction
Over the years, several electronic-structure codes based on density functional theory have been developed by different groups of academic researchers; VASP, Abinit, SIESTA, and Gaussian are just a few examples. The input to these programs is usually a simple text file written in a code-specific format with a set of code-specific keywords.
NanoLanguage was introduced by Atomistix A/S as an interface to Atomistix ToolKit (version 2.1) in order to provide a more flexible input format. A NanoLanguage script (or input file) is just a Python program and can be anything from a few lines to a script performing complex numerical simulations, communicating with other scripts and files, and communicating with other software (e.g. plotting programs). NanoLanguage is not a proprietary product of Atomistix and can be used as an interface to other density functional theory codes as well as to codes utilizing e.g. tight-binding, k.p, or quantum-chemical methods.
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