Interfacial Morphology of Polymer Thin Films for Computer Memory Applications

该项目涉及分散在液晶中的液晶的处理， 可用于可逆光学数据的无定形聚合物 存储. 工作原理是基于竞争力 相分离和玻璃化过程。 这种液体 将晶体掺杂的聚合物混合物旋涂在基底上， 形成薄膜，其界面形态强烈 由其瞬态热历史控制。 两个模型 并进行了实验研究， 了解这个方案。 目前用于计算机工业的薄膜主要是 无机的 过渡金属/稀土合金遭受 容易腐蚀和昂贵的真空沉积工艺。 的 该项目开发的有机基材料享有 通过简单旋涂形成的优点和长期稳定性。 在无定形基质中使用液晶利用了强的 液晶自组装的趋势和刚性， 无定形基质以捕获瞬时形态， 玻璃化 薄膜界面的细微差别 形态可以导致大的、容易辨别的光散射 模式，产生高信噪比。 此外该 迄今为止为这部小说所做的前期工作 液晶聚合物系统表明，快速数据记录 并且可以实现擦除。

This project involves the processing of liquid crystals dispersed in amorphous polymers that can be used for reversible optical data storage. The working principle is based on the competitive processes of phase separation and vitrification. Such liquid crystal doped polymer mixtures are spin-coated on substrates to form thin films, whose interfacial morphology is strongly controlled by their transient thermal histories. Both modeling and experimental studies are carried out to establish a firm understanding of this program. Current thin films used in the computer industry are primarily inorganic in nature. Transition metal/rare earth alloys suffer from ease of corrosion and expensive vacuum deposition processes. The organic based material being developed in this project enjoys the advantage of formation by simple spin coating and long-term stability. The use of liquid crystals in amorphous matrices exploits the strong tendency of the liquid crystals to self- assemble and the rigid, amorphous matrices to trap the transient morphology upon vitrification. Subtle differences in the thin film interfacial morphology can lead to large, easily discernible light scattering patterns, yielding high signal-to-noise ratios. In addition, the preliminary work performed to date on this novel liquid-crystal-in-polymer system indicates that fast data recording and erasure can be achieved.