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Solvent sensitive polymer composite structures

机译：溶剂敏感的聚合物复合结构

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In this paper we describe a composite system based on polystyrene colloidal nanoparticles assembled and embedded in an elastomeric matrix (polymer colloidal crystal, PCC), in the specific we have designed a PCC structure which displays an iridescent green color that can be attributed to the photonic crystal effect. This effect has been exploited to create a chemical sensor, in fact optical measurements have evidenced that the composite structure presents a different optical response as a function of the solvent applied on the surface. In particular we have demonstrated that the PCC possess, for specific solvents: (ⅰ) high sensitivity, (ⅱ) fast response (less than 1s), and (ⅲ) reversibility of the signal change. Finally preliminary results on the PCC have shown that this system can be also used as optical writing substrate using a specific solvent as ink, moreover an erasing procedure is also reported and discussed.
机译：在本文中，我们描述了一种基于聚苯乙烯胶体纳米颗粒的复合系统，该纳米颗粒组装并嵌入弹性体基质（聚合物胶体晶体，PCC）中，具体而言，我们设计了一种PCC结构，该结构显示出可归因于光子的虹彩绿色水晶效果。已经利用这种效应来创建化学传感器，实际上光学测量已经证明，该复合结构根据施加在表面上的溶剂而呈现出不同的光学响应。特别是，我们证明了PCC对于特定溶剂具有：（ⅰ）高灵敏度，（ⅱ）快速响应（小于1s）和（ⅲ）信号变化的可逆性。最终，在PCC上的初步结果表明，该系统还可以用作使用特定溶剂作为墨水的光学书写基材，此外，还报道并讨论了一种擦除程序。

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