1887
banner image
No data available.
Please log in to see this content.
You have no subscription access to this content.
No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
Local biaxiality in cholesteric liquid crystals from the surface interaction model
Rent:
Rent this article for
USD
10.1063/1.2844596
/content/aip/journal/jcp/128/10/10.1063/1.2844596
http://aip.metastore.ingenta.com/content/aip/journal/jcp/128/10/10.1063/1.2844596
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

The fixed LF and the position-dependent DF; is the local director in the plane displaced by from the origin of LF along the helical axis . A left-handed twist is sketched.

Image of FIG. 2.
FIG. 2.

(a) Relation between the DF, the MF, and the SMF referred to the point ; the outwards normal to the surface, , is the longitudinal axis of SMF, while the transverse axes are arbitrarily chosen. (b) Relation between the DF, the MF, and the spherical coordinates frame (SCF) referred to the point .

Image of FIG. 3.
FIG. 3.

Archetype molecular geometries considered in the model calculations: (a) revolution ellipsoid, (b) conical object, (c) lath-shaped molecule made of two connected parallelepipeds, and (d) propellerlike molecule made of twisted parallelepipeds.

Image of FIG. 4.
FIG. 4.

Pitch dependence of the order parameters and for the ellipsoidal molecule with and . The value for the orientational strength parameter was employed. The profiles are the same for left- or right-handed twists of the cholesteric phase.

Image of FIG. 5.
FIG. 5.

Pitch dependence of the order parameters and for the conical molecule with and . The value for the orientational strength parameter was employed. The profiles are the same for left- or right-handed twists of the cholesteric phase.

Image of FIG. 6.
FIG. 6.

Pitch dependence of the order parameters , , , and for the lath-shaped molecule with , , , and (circles). The profiles of and of are shown also for the molecule of equal transverse area with , , and (triangles). The value for the orientational strength parameter was employed. The profiles are the same for left- or right-handed twists of the cholesteric phase.

Image of FIG. 7.
FIG. 7.

Pitch dependence of the order parameters , , , and for the two enantiomers of the propellerlike molecule made of twisted parallelepipeds: (filled circles) and (open circles). The value for the orientational strength parameter was employed. The profiles are referred to a left-handed twist of the phase (for right-handed twist the profiles of the two enantiomers are exchanged).

Image of FIG. 8.
FIG. 8.

Dependence of the order parameters on the wave vector for the two enantiomers of the propellerlike molecule in the left-handed twisted phase: (filled circles) and (open circles) like in Fig. 7. Dotted lines refer the linear approximation for the order parameters as given in Eq. (42). The arrows in the first panel are placed at a value which corresponds to a pitch of 100 times the major molecular length.

Loading

Article metrics loading...

/content/aip/journal/jcp/128/10/10.1063/1.2844596
2008-03-14
2014-04-21
Loading

Full text loading...

This is a required field
Please enter a valid email address
752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Local biaxiality in cholesteric liquid crystals from the surface interaction model
http://aip.metastore.ingenta.com/content/aip/journal/jcp/128/10/10.1063/1.2844596
10.1063/1.2844596
SEARCH_EXPAND_ITEM