Coupling of wrinkle patterns to microsphere-array lithographic patterns.
Coupling of wrinkle patterns to microsphere-array lithographic patterns.
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DOI：
10.1039/b503127c
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发表时间：
2005-08
期刊：
影响因子：
3.4
通讯作者：
T. Ohzono;S. Matsushita;M. Shimomura
中科院分区：
文献类型：
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作者：
T. Ohzono;S. Matsushita;M. Shimomura
我们报告了一种方法，通过引入光刻图案（结构）在原始表面上作为空间触发器的定向微皱调制自发形成的微皱图案的金属帽弹性体表面。光刻图案被设计为具有近似相同的横向长度尺度的特征波长的微皱纹，通过利用自组装的二维微球阵列与六角形包装作为光刻掩模。当光刻图案的横向周期性接近皱纹的波长时，诱导了源自微球的六边形堆积的新的方向有序。否则，褶皱峰倾向于沿着光刻结构的小脊形成。压缩方向依赖的和可逆的有序的褶皱图案的压缩应变也被发现的图案与方向顺序。
We report a method to modulate spontaneously formed microwrinkle patterns on a metal-capped elastomer surface by introducing lithographic patterns (structures) on the original surface as spatial triggers for directed wrinkling. The lithographic patterns are designed to have approximately the same lateral length scales as the characteristic wavelength of the microwrinkles by utilizing self-assembled two-dimensional microsphere arrays with hexagonal packing as a lithographic mask. When the lateral periodicity of the lithographic pattern is close to the wavelength of wrinkles, a novel directional order originating from the hexagonal packing of microspheres is induced. Otherwise, the wrinkle crests tend to form along the small ridges of the lithographic structure. The compression direction-dependent and reversible ordering of wrinkle patterns by compressive strain is also found for patterns with directional order.