Kai Welke (Nagoya U) Towards linear-scaling DFTB molecular dynamics« Abstract: In the last 2 decades, a multitude of approaches have been developped, that aim to reduce the computational effort of quantum-chemical calculations. One such approach is the Fragment Molecular Orbital (FMO) approach, which is developed mainly in Japan. While it is (almost) routinely applied for energy calculations, geometry optimizations and properties evaluation, MD applications are sparse. Especially the recent combination of the FMO method with DFTB promises the accessibility of timescales way beyond what is possible at the moment. I would like to introduce the FMO-DFTB method, and give a small overview of the problems, I would like to address with this method, which is cellulose processing in ionic liquids.