Limits to feature size and resolution in ink jet printing
Limits to feature size and resolution in ink jet printing
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DOI：
10.1016/j.jeurceramsoc.2008.07.016
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发表时间：
2009-03
影响因子：
5.7
通讯作者：
J. Stringer;B. Derby
中科院分区：
文献类型：
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作者：
J. Stringer;B. Derby
喷墨印刷是制造小型陶瓷部件和MEMS部件的有吸引力的途径。以这种方式制造的部件的可获得的特征尺寸由所产生的液滴尺寸和液滴如何与基板相互作用两者来确定。在这里，我们提出了一个研究的冲击和聚结的下降，形成珠，线性存款后，随后的相变。实验发现，存在一个最小的线性存款宽度，该宽度取决于液滴尺寸和液滴与基底之间的表面能相互作用。一个简单的几何模型，可以准确地预测发病的限制与变化的液滴分离和存款在一个给定的液滴分离的宽度。一个膨胀的不稳定性也被发现在小液滴分离，这是解释在竞争压力驱动的轴向流和毛细作用驱动的扩散流。发现沉积的纳米颗粒油墨的膨胀与先前的观察定性地一致，随着打印头横移速度的增加，膨胀减小。沉积的基于溶液的油墨的膨胀与先前的观察结果不一致;这是根据形成不稳定性时溶剂的蒸发来解释的。
Ink jet printing is an attractive route for the manufacture of small ceramic parts and MEMS components. The attainable feature size of a component fabricated in this fashion is determined by both the generated droplet size and how the droplet interacts with the substrate. Here we present a study of the impingement and coalescence of drops to form beads, and linear deposits after a subsequent phase change. Experimentally, it is found that there is a minimum width of linear deposit produced in this way that is dependent upon droplet size and the surface energy interaction between droplet and substrate. A simple geometric model is presented that can accurately predict both the onset of limitation with changing droplet separation and the width of the deposit at a given droplet separation. A bulging instability is also found at small droplet separation that is explained in terms of competing pressure-driven axial flow and spreading flow driven by capillarity. The bulging of deposited nanoparticulate ink was found to agree qualitatively with previous observations, with the bulging being reduced with increasing print-head traverse velocity. The bulging of deposited solution-based ink did not agree with previous observations; this was explained in terms of evaporation of solvent as the instability was formed.