Genre
- Journal Article
The anisotropic intermolecular forces responsible for the orientational ordering in liquid crystals are probed by comparing Monte Carlo (MC) simulations with experimental nuclear magnetic resonance (NMR) results for solutes in nematic liquid crystals. In a special liquid crystal mixture where all long-range interactions are assumed to be minimized, the models for short-range interactions which best fit NMR experimental solute order parameters also best fit solute order parameters from MC simulations of hard ellipsoids. This is taken as an indication that in this special mixture the intermolecular potential is dominated by short-range forces. However, for liquid crystals where long-range interactions are important, simulations of hard ellipsoids with point quadrupoles cannot reproduce even the gross effects observed with experimental NMR data.
Univ British Columbia, Dept Chem, Vancouver, BC V6T 1Z1, Canada.; Syvitski, RT, Univ British Columbia, Dept Chem, 2036 Main Mall, Vancouver, BC V6T 1Z1, Canada.
SINGAPORE; JOURNAL DEPT PO BOX 128 FARRER ROAD, SINGAPORE 912805, SINGAPORE
WORLD SCIENTIFIC PUBL CO PTE LTD
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Source type: Electronic(1)
Language
- English
Subjects
- liquid crystal
- nuclear magnetic resonance experiment
- Physics, Mathematical
- Computer Science, Interdisciplinary Applications
- MONTE-CARLO SIMULATIONS
- SHORT-RANGE
- Monte Carlo simulation
- ORIENTATIONAL
- quadrupole interaction
- anisotropic intermolecular force
- short-range interaction
- ELECTRIC-DIPOLE INTERACTIONS
- SOLUTES
- MOLECULES
- ORDER
- size
- NEMATIC SOLVENTS
- SHAPE