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Electric Fields Parallel to the Helix Axis

Many of the magneto-optic effects described earlier are readily observed in electric fields when the magnetic free energy term magnetic [= ( is replaced by the [Pg.388]

For the distorted structure E the helix axis will have small components in the x direction as before, and therefore in the small deformation approximation we have [Pg.389]

There is a further force/j, due to changes in the dielectric tensor as the chiral nematic [Pg.389]

The total electric force/eietuic acting on the chiral nematic layers is [Pg.389]

as was shown for the magnetic case (see Eq. 124), the threshold field, E, is proportional to pd). For long pitch systems and thick cells, these effects are readily observed [156-159] in moderate electric fields ( a few volts/micrometers) and this analysis has been extended to the general case of ac fields [134] to give [Pg.389]


See other pages where Electric Fields Parallel to the Helix Axis is mentioned: [Pg.967]    [Pg.1369]    [Pg.1492]    [Pg.388]   


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