1. Computational Sciences and Engineering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, United States
2. Aix Marseille University, CNRS, Centrale Marseille, Institut Fresnel, Marseille 13397, France
3. Aix Marseille University, CNRS, CINaM, Marseille 13288, France
4. BioEnergy Science Center, Biosciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, United States
5. Department of Chemical and Biomolecular Engineering, University of Tennessee, Knoxville, Tennessee 37996, United States
6. Department of Physics, University of Tennessee, Knoxville, Tennessee 37996, United States