Anisotropically compartmentalized microparticles have attracted increasing interest in areas ranging from sensing, drug delivery, and catalysis to microactuators. Herein, a facile method is reported for the preparation of helically decorated microbuilding blocks, using a modified electrohydrodynamic cojetting method. Bicompartmental microfibers are twisted in situ, during electrojetting, resulting in helical microfibers. Subsequent cryosectioning of aligned fiber bundles provides access to helically decorated microcylinders. The unique helical structure endows the microfibers/microcylinders with several novel functions such as translational motion in response to rotating magnetic fields. Finally, microspheres with helically patterned compartments are obtained after interfacially driven shape shifting of helically decorated microcylinders.

中文翻译：

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通过电动流体动力共喷射制备的区室化微螺旋

各向异性分隔的微粒在从传感，药物递送，催化到微驱动器等领域引起了越来越多的兴趣。在本文中，报道了一种使用改进的电动流体动力共喷射方法制备螺旋装饰的微构件的简便方法。双室微纤维在电喷过程中原位扭曲，形成螺旋状微纤维。随后对齐纤维束的冷冻切片提供了进入螺旋装饰的微圆柱体的通道。独特的螺旋结构赋予微纤维/微圆柱体多种新功能，例如响应旋转磁场的平移运动。最后，在螺旋装饰的微圆柱体的界面驱动的形状移动之后，获得具有螺旋状图案的隔室的微球。