School of Chemistry and Environment, Beihang University, Beijing 100190, P. R. China.
Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences, Beijing Engineering Research Center of Nanomaterials for Green Printing Technology, Beijing National Laboratory for Molecular Sciences, Beijing 100190, China.
Nanoscale. 2016 May 5;8(18):9556-62. doi: 10.1039/c5nr09239f.
The rapidly increasing research interest in microfluidics, microreactors and solution-processable fabrication technologies requires the development of patterning techniques to obtain large-scale functional liquid arrays. To achieve this objective, photolithography, microcontact printing and mask-based UV irradiation have been utilized to physically or chemically pattern surfaces into templates where ordered arrays of liquid materials are constructed. However, these methods require elaborately fabricated templates or expensive vacuum-deposited masks that restrict their practical applications. Herein, we fabricate physically patterned superhydrophobic surfaces with high adhesion by modifying inkjet-imprinted surfaces through nanoparticle deposition, and utilize these surfaces as templates for liquid patterning. Various functional liquid materials are patterned into defined shapes through a simple dipping-withdrawing process. Moreover, functional material patterns such as photonic crystal patterns, arrays of inorganic nanoparticles and crystals are formed after solvent evaporation of the liquid droplets. Furthermore, chemical reactions can be carried out on the patterns. These surfaces demonstrate excellent performance in liquid patterning, which will find numerous applications in optoelectronic devices, lab-on-chip devices, microreactors, and related fields.
对微流控、微反应器和溶液加工制造技术的研究兴趣迅速增加，这需要开发图案化技术来获得大规模的功能液体阵列。为了实现这一目标，已经利用光刻、微接触印刷和基于掩模的紫外光照射将表面物理或化学地图案化为模板，在这些模板中构建有序的液体材料阵列。然而，这些方法需要精心制造的模板或昂贵的真空沉积掩模，这限制了它们的实际应用。在这里，我们通过在喷墨印刷表面上沉积纳米粒子来修饰具有高附着力的物理图案化超疏水表面，并将这些表面用作液体图案化的模板。通过简单的浸渍-提拉过程将各种功能液体材料图案化成规定的形状。此外，在液体微滴蒸发后，还可以形成功能性材料图案，如光子晶体图案、无机纳米粒子和晶体阵列。此外，还可以在图案上进行化学反应。这些表面在液体图案化方面表现出优异的性能，将在光电设备、芯片实验室设备、微反应器和相关领域得到广泛应用。
