Precise size control of inkjet-printed droplets on a flexible polymer substrate using plasma surface treatment
Precise size control of inkjet-printed droplets on a flexible polymer substrate using plasma surface treatment
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DOI：
10.1088/0960-1317/20/1/015030
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发表时间：
2010-01-01
影响因子：
2.3
通讯作者：
Lim, Si Yeon
中科院分区：
文献类型：
--
作者：
Oh, Je Hoon;Lim, Si Yeon
通过改变等离子体工艺参数，研究了等离子体表面处理对喷墨打印在PI基板上的液滴干燥直径的影响。将析因设计与响应面法相结合的序贯实验设计技术引入到系统地估计两个独立设计变量：射频（RF）功率和气体压力的精确经验响应模型中。C（4）F（8）气体用于90 mm × 90 mm聚酰亚胺基板的等离子体表面处理。从30 μ m喷嘴喷射的银墨滴被打印在等离子体处理的基板上，并且它们的测量直径和标准偏差被用作响应变量。等离子体处理的基板，其特征在于接触角和X射线光电子能谱。结果表明，微滴直径及其均匀性对射频功率和气压的变化敏感，PI衬底上的微滴直径越小，表面能越低，且工艺条件产生的F含量越高，表面越疏水。通过C（4）F（8）等离子体表面处理改变液滴直径和均匀性，可以精确控制喷墨打印的分辨率。
The effect of plasma surface treatment on the dried diameter of droplets inkjet-printed on the PI substrate was investigated by varying the plasma process parameters. The sequential design of the experiments technique combining a factorial design with a response surface method was introduced to systematically estimate an accurate empirical response model for two independent design variables: radio frequency (RF) power and gas pressure. C(4)F(8) gas was used for the plasma surface treatment of 90 mm x 90 mm polyimide substrates. Ag ink droplets ejected from a 30 mu m nozzle were printed on the plasma-treated substrates, and their measured diameter and standard deviation were used as the response variables. The plasma-treated substrate was also characterized by contact angles and x-ray photoelectron spectroscopy. The results indicate that the droplet diameters and their uniformity are sensitive to changes in both RF power and gas pressure, lower droplet diameters on PI substrates correspond to lower surface energies, and the process condition producing higher F content results in more hydrophobic surface. The resolution of the inkjet printing can be precisely controlled by varying the droplet diameter and uniformity through the C(4)F(8) plasma surface treatment.