Molecular shape and flexoelectricity

Details Molecular shape and flexoelectricity Molecular shape and flexoelectricity

1999-10-16

arxiv.org/abs/cond-mat/9910255v1

Liquid Crystals, 27, 1151 (2000)

Physics

Condensed Matter

Soft Condensed Matter

12 pages, 18 figures

Scientific paper

We performed Monte Carlo simulations of systems of wedge-shaped objects formed from Gay-Berne ellipsoids joined to Lennard-Jones spheres. We studied two different wedge shapes, one more asymmetric than the other. The bend and splay flexoelectric coefficients were measured in the isotropic and smectic phases using linear response theory, and found to be negligibly small in the isotropic phase. We found a close connection between the properties of the intermolecular potential and the flexoelectric coefficients measured in the smectic phase. In particular, we found negligible bend coefficients for both shapes and a larger magnitude of the splay coefficient for the more prominent wedge, in accord with Meyer's original mechanism for flexoelectricity. The less prominent wedge produced a splay flexoelectric coefficient with the opposite sign due to the attractive tail of the intermolecular potential and the relative narrowness of the molecular head.

Affiliated with

Also associated with

No associations

Rating

Molecular shape and flexoelectricity 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 Molecular shape and flexoelectricity, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Molecular shape and flexoelectricity will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-594170