Positional, Reorientational and Bond Orientational Order in DNA Mesophases

Details Positional, Reorientational and Bond Orientational Order in DNA Mesophases Positional, Reorientational and Bond Orientational Order in DNA Mesophases

2001-05-29

arxiv.org/abs/cond-mat/0105561v1

Physics

Condensed Matter

Soft Condensed Matter

4 pages, 2 figures

Scientific paper

10.1103/PhysRevLett.87.218101

We investigate the orientational order of transverse polarization vectors of long, stiff polymer molecules and their coupling to bond orientational and positional order in high density mesophases. Homogeneous ordering of transverse polarization vector promotes distortions in the hexatic phase, whereas inhomogeneous ordering precipitates crystalization of the 2D sections with different orientations of the transverse polarization vector on each molecule in the unit cell. We propose possible scenarios for going from the hexatic phase, through the distorted hexatic phase to the crystalline phase with an orthorhombic unit cell observed experimentally for the case of DNA.

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