1. Department of Materials and Interfaces, Weizmann Institute of Science, 76100 Rehovot, Israel, Department of Gastroenterology, Souraski Medical Center, Ichilov Hospital, 6 Weizmann Street, 64239 Tel Aviv, and Minerva Center for Cholesterol Gallstones and Lipid Metabolism in the Liver, Sackler Faculty of Medicine, Tel Aviv University, Israel, Laboratoire de Spectrométrie Physique, UMR 5588 Université J. Fourier, BP 87, 38402 St. Martin d'Hères, France, Department of Solid State Physics, Risø National...