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Nature Com:由章鱼得到启发的柔性显示器

摘要 : 美国杜克大学的研究人员在线报告了由头足类动物的皮肤得到启发的、用来控制柔性显示器上图案的一种方法。相关文章发表于2014年9月16日的《Nature Communications》杂志上。
Bioinspired design strategy for on-demand fluorescent patterning.

仿生设计策略用于按需荧光模型

如乌贼和章鱼等头足类动物,在其皮肤中有被称为“载色体”的含色素的细胞。它们能通过收缩和扩张肌肉、让不同数量的光从这些细胞逃逸来改变皮肤颜色,从而使其能够在不同图案之间迅速切换。

Xuanhe Zhao及同事通过利用一个电场来控制一种聚合物内的张力,在该聚合物表面上重现了这一效应。嵌入在该聚合物内的染料对这种张力做出反应,让以前确定的图案显示出来。作者发现,所产生的图案(如字母和形状)可以被显示和擦除无数次。这些柔性显示器也许是传统平面显示器的一个未来替代方案。

原文摘要:

Cephalopod-inspired design of electro-mechano-chemically responsive elastomers for on-demand fluorescent patterning

Qiming Wang, Gregory R. Gossweiler, Stephen L. Craig & Xuanhe Zhao

Cephalopods can display dazzling patterns of colours by selectively contracting muscles to reversibly activate chromatophores – pigment-containing cells under their skins. Inspired by this novel colouring strategy found in nature, we design an electro-mechano-chemically responsive elastomer system that can exhibit a wide variety of fluorescent patterns under the control of electric fields. We covalently couple a stretchable elastomer with mechanochromic molecules, which emit strong fluorescent signals if sufficiently deformed. We then use electric fields to induce various patterns of large deformation on the elastomer surface, which displays versatile fluorescent patterns including lines, circles and letters on demand. Theoretical models are further constructed to predict the electrically induced fluorescent patterns and to guide the design of this class of elastomers and devices. The material and method open promising avenues for creating flexible devices in soft/wet environments that combine deformation, colorimetric and fluorescent response with topological and chemical changes in response to a single remote signal.

 

来源: Nature中文 浏览次数:123

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