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Surface plasmons induced extra diffraction band of cholesteric liquid crystal grating
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10.1063/1.2976337
/content/aip/journal/jap/104/6/10.1063/1.2976337
http://aip.metastore.ingenta.com/content/aip/journal/jap/104/6/10.1063/1.2976337
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(a) and (b) show the SEM pictures of silver thin films before and after annealing. (c) The AFM picture of the annealed film shows that the size of the silver nanoparticle is .

Image of FIG. 2.
FIG. 2.

(a) The CLC cell with silver nanoparticles distributed on one plate of the cell and (b) the CLC grating structure well formed with the application of a proper voltage to the cell.

Image of FIG. 3.
FIG. 3.

CLC grating structure was observed with an optical microscope and the diffraction pattern shown on top (probed by the He–Ne laser of 632.8 nm).

Image of FIG. 4.
FIG. 4.

The first-order diffraction efficiency vs wavelength of the CLC grating with and without the silver nanoparticles distributed on one plate of the cell, and the absorbance of the silver nanoparticles covered with E7 LC is shown in the inset illustration.

Image of FIG. 5.
FIG. 5.

Theoretical absorbance of silver nanoparticles surrounded by the environment with refractive indices of 1.52 and 1.74. The inset shows the silver nanoparticles layer was posited between the CLC grating and ITO plate. The particles experienced the environments with indices of and .

Image of FIG. 6.
FIG. 6.

Theoretical diffraction efficiencies show the extra diffraction band of CLC grating with silver nanoparticles.

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/content/aip/journal/jap/104/6/10.1063/1.2976337
2008-09-19
2014-04-18
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Surface plasmons induced extra diffraction band of cholesteric liquid crystal grating
http://aip.metastore.ingenta.com/content/aip/journal/jap/104/6/10.1063/1.2976337
10.1063/1.2976337
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