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Wavelength tuning the photonic band gap in chiral nematic liquid crystals using electrically commanded surfaces
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10.1063/1.2820681
/content/aip/journal/apl/91/23/10.1063/1.2820681
http://aip.metastore.ingenta.com/content/aip/journal/apl/91/23/10.1063/1.2820681
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(Color online) Schematic of the chiral nematic liquid crystal/ferroelectric liquid crystal command surface cell configuration and proposed wavelength tuning mechanism.

Image of FIG. 2.
FIG. 2.

(Color online) Wavelength tuning of the photonic band gap using dual electrically commanded FLC surfaces. (a) Shift of the PBG with amplitude of electric field at a constant frequency of and (b) PBG shift with frequency at constant amplitude of . All data were recorded at a temperature of .

Image of FIG. 3.
FIG. 3.

Effective average switching angle of the FLC during a time of time period as functions of (a) amplitude of electric field at a constant frequency of and (b) the driving frequency with constant amplitude of . Measurements were carried out using the FLC compound R1809 in a thick rubbed polyimide cell.

Image of FIG. 4.
FIG. 4.

(Color online) Electrical tuning of the long wavelength photonic band edge for a dual—FLC surfaces cell (triangles), a single—FLC surfaces cell (circles), and a cell consisting of only polyimide layers (squares). The frequency of the electric field was and the temperature was .

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/content/aip/journal/apl/91/23/10.1063/1.2820681
2007-12-05
2014-04-20
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Wavelength tuning the photonic band gap in chiral nematic liquid crystals using electrically commanded surfaces
http://aip.metastore.ingenta.com/content/aip/journal/apl/91/23/10.1063/1.2820681
10.1063/1.2820681
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