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首页> 外文期刊>RSC Advances >Light-printable epoxy oligomer wrinkle-forming surface for rewritable information storage
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Light-printable epoxy oligomer wrinkle-forming surface for rewritable information storage

机译：可打印的环氧树脂抗皱皱纹，可重写信息存储

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摘要

Smart surfaces with controlled topography show broad and fantastic applications in optics, biology and information science. Herein, we report a simple visible-light-illumination approach to fabricate a smart wrinkle-forming surface with photo-controllable hierarchical surface patterns as well as rewritable high-resolution patterns of information by using an azobenzene-containing epoxy-based oligomer. The epoxy oligomer was synthesized via the ring-opening polymerization of bisphenol AF diglycidyl ether (BADFGE) with p -aminoazobenzene (AAB) and characterized using FTIR, ~(1) H NMR and ~(19) F NMR spectroscopies. When the epoxy oligomer film was deposited on an elastic substrate, the formation of surface wrinkles was triggered via a circulation of heating/cooling and photo-tailored due to photo-softening together with the release of stress induced by cycles of photoisomerization of azobenzene in the oligomer. The wrinkles in selectively light-exposed regions could be photo-erased within tens of seconds, yielding a different pattern of information. The high-resolution photo-printed images were shown to be rewritable for multiple cycles and legible for over 3 months in dark ambient conditions. The as-formed epoxy oligomer wrinkle-forming surface was found to be inexpensive and its fabrication was easily amenable to scale up, indicating its great potential as ink-free light printable media for rewritable information storage.
机译：具有受控地形的智能曲面在光学，生物学和信息科学中显示了广泛而神奇的应用。在此，我们报告了一种简单的可见光照明方法，以制造具有可光控制的层级图案的智能皱纹形成表面，以及通过使用含偶氮苯的环氧基的低聚物的可重写的高分辨率模式。环氧低聚物通过双酚AF二缩水甘油醚（Badfge）的开环聚合用P-aminoazobenen（AAB）合成，并使用FTIR，〜（1）H NMR和〜（19）F NMR光谱。当环氧低聚物膜沉积在弹性基板上时，通过加热/冷却的循环和由于光化的循环释放通过亚非苯苯甲酰胺的循环循环释放而导致的加热/冷却和光照的循环形成表面皱纹的形成低聚物。选择性地清淡区域中的皱纹可以在几十秒内进行光擦除，产生不同的信息模式。高分辨率的光印刷图像显示在暗环境条件下超过3个月的多个循环可重写，可辨。发现AS形成的环氧树脂抗皱形成表面是便宜的，并且其制造易于缩放，表明其作为可重写信息存储的无油墨可光可打印介质的巨大潜力。

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