| Autor: |
Levine, Yehudi K., Gomes, Alexandre E., Martins, Assis Farinha, Polimeno, Antonino |
| Předmět: |
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| Zdroj: |
Journal of Chemical Physics; 4/8/2005, Vol. 122 Issue 14, p144902, 7p, 3 Diagrams, 1 Chart, 6 Graphs |
| Abstrakt: |
Simulations of nematic and smectic mesophases based on a dissipative particle dynamics approach are discussed. Mesogenic units are built in the form of standard semirigid bead-spring chains. It is shown that nematic phases can be formed for chains containing at least eight beads, provided that the conservative soft-repulsive potential between nonconnected beads is sufficiently strong. Smectic phases are observed only by modifying the repulsive interaction between the main-chain and terminal beads. The simulations indicate that the smectic-nematic and smectic-isotropic phase transitions take place through the buckling of the smectic layering in the system. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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