Physics – Condensed Matter – Soft Condensed Matter
Scientific paper
2009-04-11
Physics
Condensed Matter
Soft Condensed Matter
14 pages, 5 figures
Scientific paper
Using molecular dynamics we investigate the thermodynamics, dynamics and structure of 250 diatomic molecules interacting by a core-softened potential. This system exhibits thermodynamics, dynamics and structural anomalies: a maximum in density-temperature plane at constante pressure and maximum and minimum points in the diffusivity and translational order parameter against density at constant temperature. Starting with very dense systems and decreasing density the mobility at low temperatures first increases, reach a maximum, then decreases, reach a minimum and finally increases. In the pressure-temperature phase diagram the line of maximum translational order parameter is located outside the line of diffusivity extrema that is enclosing the temperature of maximum density line. We compare our results with the monomeric system showing that the anisotropy due to the dumbbell leads to a much larger solid phase and to the appearance of a liquid crystal phase. the double ranged thermodynamic and dynamic anomalies.
Barbosa Marcia C.
de Oliveira Alan Barros
Gavazzoni Cristina
Netz Paulo A.
Neves Eduardo B.
No associations
LandOfFree
Liquid crystal phase and waterlike anomalies in a core-softened shoulder-dumbbells system does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Liquid crystal phase and waterlike anomalies in a core-softened shoulder-dumbbells system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Liquid crystal phase and waterlike anomalies in a core-softened shoulder-dumbbells system will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-442118