University of Mons

About: University of Mons is a education organization based out in Mons, Belgium. It is known for research contribution in the topics: Large Hadron Collider & Standard Model. The organization has 3073 authors who have published 9465 publications receiving 294776 citations.

Linear and Nonlinear Optical Properties of Colloidal Photonic Crystals

Abstract: Linear and Nonlinear Optical Properties of Colloidal Photonic Crystals Luis Gonz alez-Urbina, Kasper Baert, Branko Kolaric,* Javier P erez-Moreno, and Koen Clays* Department of Chemistry and INPAC Institute of Nanoscale Physics and Chemistry, K. U. Leuven, Celestijnenlaan 200D, B-3001 Heverlee, Belgium Laboratoire Interfaces et Fluides Complexes, Centre d’Innovation et de Recherche en Mat eriaux Polym eres, Universit e de Mons, 20 Place du Parc, 7000 Mons, Belgium

Flexible Surface Hopping Approach to Model the Crossover from Hopping to Band-like Transport in Organic Crystals

Abstract: Two distinct pictures are usually evoked when modeling charge transport in organic crystals, that is, band and hopping models, the signature of which is conveyed by a characteristic temperature dependence of mobility. Here, we present a novel flexible surface hopping approach compliant with general Hamiltonians that is able to grasp the crossover from hopping to band-like transport regimes. This approach is applied to solve a one-dimensional mixed quantum-classical model and to calculate the temperature dependence of charge mobility along with the degree of charge spatial localization. It is found that the roles of both local and nonlocal electron-phonon couplings strongly depend on the intrinsic charge localization strength.

Drop Impact on Porous Superhydrophobic Polymer Surfaces

Abstract: Water drop impacts are performed on porous-like superhydrophobic surfaces. We investigate the influence of the drop size and of the impact velocity on the event. The Cassie-Baxter/Wenzel transition is observed to be a function of the drop size, as well as the outcomes of the impact or deposition process, which can be deposition, rebound, sticking, or fragmentation. A quantitative analysis on the experimental conditions required to observe rebound is provided. Our analysis shows that the wettability hysteresis controls the limit between deposition and rebound events. This limit corresponds to a constant Weber number. A survey of literature results on impact over patterned superhydrophobic surfaces is provided as a comparison.