Mesogenic versus non-mesogenic azo dye confined in a soft-matter template for realization of optically switchable diffraction gratings

被引：23

作者：

De Sio, Luciano ^{[1
,2
]}

Serak, Svetlana ^{[3
]}

Tabiryan, Nelson ^{[3
]}

Umeton, Cesare ^{[1
,2
]}

机构：

[1] Univ Calabria, LICRYL, Ctr Excellence CEMIF CAL, IPCF CNR, I-87036 Arcavacata Di Rende, CS, Italy

[2] Univ Calabria, Dept Phys, I-87036 Arcavacata Di Rende, CS, Italy

[3] Beam Engn Adv Measurements Co, Winter Pk, FL 32789 USA

来源：

JOURNAL OF MATERIALS CHEMISTRY | 2011年 / 21卷 / 19期

关键词：

SLICE SEQUENCE STRUCTURE; HOLOGRAPHIC GRATINGS; LIQUID-CRYSTALS; AZOBENZENE;

D O I：

10.1039/c1jm10284b

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070305 [高分子化学与物理];

摘要：

We report on fabrication and characterization of two different kinds of optically controlled diffraction gratings realized in soft composite materials. The periodic microstructures have been obtained by combining a photolithographic technique and a chemical etching process. The samples have been infiltrated with two classes of photosensitive materials, and then characterized. The first material is a common azo-dye dissolved in a liquid crystal (LC), while the second one is an azobenzene LC (azo-LC). The response and relaxation times, lifetimes and spectral absorption range of the LC mixtures confined in the microstructures were measured. Detailed comparison of investigated characteristics reveals a better overall performance of the azo-LC based sample.

引用

页码：6811 / 6814

页数：4

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