Recently, 3D bioprinting is developed as an emerging approach, increasingly applied to materials for healthcare; while, the precise placement of cells and materials, and the shape fidelity of forming constructs is of great importance for successful application of 3D bioprinting. Research efforts have been made to develop new bioinks as “raw materials” with better biocompatibility and biofunctionality, but the printability of bioinks is largely ignored and still needs to be carefully examined to enable robotic bioprinting. This article aims to introduce a recent published review (Appl. Phys. Rev. 2018, 5, 041304) on the evaluation of bioink printability by Huang’s research group from University of Florida. Huang et al. comprehensively reviewed the bioink printability based on the physical point of view during inkjet printing, laser printing, and microextrusion, and a series of self-consistent time scales and dimensionless quantities were utilized to physically understand and evaluate bioink printability. This article would be helpful to know the trends on physical understanding of bioink printability.

中文翻译：

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对生物墨水可印刷性的物理理解趋势

近来，3D生物打印已发展成为一种新兴方法，越来越多地应用于医疗保健材料。同时，细胞和材料的精确放置以及成型结构的形状保真度对于成功应用3D生物打印至关重要。为了开发具有更好的生物相容性和生物功能性的新型生物墨水作为“原材料”，已经进行了研究工作，但是生物墨水的可印刷性在很大程度上被忽略，仍然需要仔细检查以实现机器人生物印刷。本文旨在介绍佛罗里达大学的Huang的研究小组最近发表的关于生物墨水可印刷性评估的已发表评论（Appl。Phys。Rev. 2018，5，041304）。黄等。在喷墨打印，激光打印，和微挤压，以及一系列自洽的时间尺度和无量纲的量，用于物理理解和评估生物墨水的可印刷性。本文将有助于您对生物墨水可印刷性的物理理解趋势有所了解。