Interface phenomena in multifunctional liquid-crystal ferroelectric-polymer composites

多功能液晶铁电聚合物复合材料中的界面现象

• 批准号: 138035589
• 负责人: Professor Dr.-Ing. Reimund Gerhard
• 金额: --
• 依托单位: Institut für Physik und Astronomie
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2009
• 资助国家: 德国
• 起止时间: 2008-12-31 至 2011-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/138035589?language=en
• 关键词: Interface; phenomena; multifunctional; liquid; crystal

We propose the development and microscopic characterization of polymer-dispersed liquid crystals (PDLCs) where the electro-optically active material is embedded into a piezo- or pyroelectric host polymer. PDLCs with inactive host polymers have been known for some time as electrically switchable light-valves. With a ferro-, pyro-, and piezoelectric host, new effects arise, coupling different material quantities. For example, the application of a mechanical stress leads to a change in the internal electric field, which in turn changes the effective refractive index of the liquid crystal and hence the optical transmission.

我们提出了聚合物分散液晶(PDLCs)的发展和微观表征，其中电光活性材料被嵌入到压电或热释电主体聚合物中。含有非活性主体聚合物的PDLC被称为电可切换光阀已有一段时间了。有了铁系、热系和压电体，就会产生新的效应，从而耦合不同的材料量。例如，施加机械应力会导致内部电场发生变化，进而改变液晶的有效折射率，从而改变光传输。

项目成果

Piezoelectric d33 coefficients in foamed and layered polymer piezoelectrets from dynamic mechano-electrical experiments, electro-mechanical resonance spectroscopy and acoustic-transducer measurements

• DOI: 10.1088/0957-0233/23/3/035604
• 发表时间: 2012-03-01
• 期刊: MEASUREMENT SCIENCE AND TECHNOLOGY
• 影响因子: 2.4
• 作者: Fang, Peng;Hollaender, Lars;Gerhard, Reimund
• 通讯作者: Gerhard, Reimund