Inkjet printing can be used to deposit photopolymerizable magnetic inks for the creation of functionalized composites. Anisotropic properties in the composites can be achieved when inkjet printing is combined with external magnetic fields to align magnetically orientable particles (MOPs). When a MOP is induced by an external magnetic field, it will create its own magnetic field that can attract neighboring particles. The coarsening of particles into higher‐order structures like chains and sheets is unwanted in certain areas, such as high‐frequency applications. We show that this particle–particle attraction and subsequent particle migration can be inhibited with the introduction of a yield stress into the suspending medium, while still allowing the alignment of the particle to proceed. For magnetically induced rotational and translational motions for oblate spheroids in a rotating magnetic field, theoretical scalings are presented for the characteristic timescales in a linear fluid and for the characteristic stresses in a yield‐stress fluid. © 2018 American Institute of Chemical Engineers AIChE J, 64: 3215–3226, 2018

中文翻译：

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利用屈服应力流体抑制微磁盘通过旋转磁场进行磁对准时的链接

喷墨印刷可用于沉积可光聚合的磁性油墨，以形成功能化的复合材料。当喷墨印刷与外部磁场结合以使可磁取向的颗粒（MOP）对准时，可以实现复合材料的各向异性。当MOP由外部磁场感应时，它将产生自己的磁场，该磁场可以吸引相邻的粒子。在某些区域（例如高频应用）中，不希望将粒子粗化为链和薄片之类的高级结构。我们表明，通过将屈服应力引入到悬浮介质中，可以抑制这种颗粒间的吸引和随后的颗粒迁移，同时仍然允许进行颗粒排列。对于旋转磁场中扁球体的磁感应旋转和平移运动，提出了线性流体中的特征时间尺度和屈服应力流体中的特征应力的理论尺度。©2018美国化学工程师学会AIChE J，64：3215–3226，2018