1. Sorbonne Université, CNRS, Collège de France Laboratoire de Chimie de la Matière Condensée de Paris 4 Place Jussieu 75252 Paris France
2. Department of Chemical and Petroleum Engineering University of Pittsburgh 4200 Fifth Avenue Pittsburgh Pennsylvania 15260 USA
3. E.A. Fischione Instruments Inc. 9003 Corporate Circle Export PA 15632 USA
4. Department of Physics University of Pittsburgh 4200 Fifth Avenue Pittsburgh Pennsylvania 15260 USA