Back Cover: The cover image depicts a light‐responsive, passive micromixer in its swollen state, which mixes blue and yellow fluids using slanted groove structures. The molecule on the left is a protonated merocyanine, resulting in a swollen hydrogel, illustrated by the yellow disk. When illuminated, the spiropyran on the right is formed, resulting in a collapsed hydrogel, illustrated by the white disk. Further details can be found in article number 1700086 by Jaap M. J. den Toonder,* Albertus P. H. J. Schenning,* and co‐workers. The cover was designed by Mats Björklund.

中文翻译：

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大分子。快速通信。1/2018

封底：封底图像描绘了处于膨胀状态的光响应式被动微型混合器，该混合器使用倾斜的凹槽结构混合了蓝色和黄色的流体。左边的分子是质子化的花青，导致水凝胶溶胀，如黄色圆盘所示。当被照亮时，右侧的螺吡喃形成，导致水凝胶塌陷，如白色圆盘所示。可以在Jaap MJ den Toonder，Albertus PHJ Schenning *和同事的文章编号1700086中找到更多详细信息。封面是由MatsBjörklund设计的。