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Polymer stabilized chiral nematic liquid crystals for fast switching and high contrast electro-optic devices
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View: Figures


Image of FIG. 1.
FIG. 1.

(Color online) Schematic of the electro-optic cell architecture.

Image of FIG. 2.
FIG. 2.

(Color online) (a) Relative transmitted intensity as a function of electric field measured at 436 nm (squares), 546 nm (circles), and 658 nm (triangles), respectively. The inset shows the reproducible switching on field ramp reversal. (b) Plots of Δneff against E 2 for each wavelength; the inset shows Δneff as a function of wavelength for a fixed applied electric field of 16.4 V/μm.

Image of FIG. 3.
FIG. 3.

(Color online) Response times of the USH cell as a function of electric field strength (rise time (open circles) and decay time (closed squares)) measured at 30 °C and 436 nm wavelength. The inset shows the optical response (plotted on the secondary axis) for an isolated train of 3 bipolar pulses.

Image of FIG. 4.
FIG. 4.

The temperature dependence of the electro-optic characteristics (λ = 436 nm). The rise (open circles) and decay (closed squares) times as a function of temperature for E = 17.4 V μm 1 are plotted on the primary axis. The value of E on for the first bright state is plotted on the secondary axis (closed triangles).

Image of FIG. 5.
FIG. 5.

(Color online) Photographs of (a) “Off” and (b) “On” state of the USH cell on a cold-cathode fluorescence backlight between crossed polarizers. The electrode region covers an active area of 1 cm2. The “Off” (c) and “On” (d) states recorded using a polarizing microscope. The dark lines in (d) represent the regions above the electrodes, which are w = 4 μm. The in-plane electrode separation is s = 9 μm.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Polymer stabilized chiral nematic liquid crystals for fast switching and high contrast electro-optic devices