Wang Xiaojie, Yang Xin, Wang Yiming, Li Baoqing, Chu Jiaru
Department of Precision Machinery and Precision Instrumentation, University of Science and Technology of China, Hefei, Anhui 230027, China.
Key Laboratory of Precision Scientific Instrumentation of Anhui Higher Education Institutes, University of Science and Technology of China, Hefei, Anhui 230027, China.
Langmuir. 2023 Sep 19;39(37):13399-13408. doi: 10.1021/acs.langmuir.3c02291. Epub 2023 Sep 6.
The behavior of cavity collapse in liquids is of fundamental importance in natural and industrial applications. It is still challenging to use the phenomenon of cavity collapse ejection in on-demand droplet printing technology. In this study, we investigate the cavity collapse ejection phenomenon in the submillimeter to millimeter scale and demonstrate that the cavity capillary energy is a critical factor affecting the state of the generated jet. Based on this phenomenon, we developed a droplet printing technology that can print nanoliter satellite-free droplets from a millimeter-sized nozzle, which reduces the risk of nozzle clogging. Using this printing technology, we demonstrated the printing of a nanoparticle suspension with 60% mass loading. Finally, we also showcased the printing of various inks for different applications using this technology, demonstrating the printability of cavity collapse-ejection printing technology in functional inks and showing potential to be applied in scenarios such as bioassays, the electronics industry, and additive manufacturing.
液体中空腔坍塌行为在自然和工业应用中具有至关重要的意义。在按需滴液打印技术中利用空腔坍塌喷射现象仍然具有挑战性。在本研究中，我们研究了亚毫米到毫米尺度下的空腔坍塌喷射现象，并证明空腔毛细管能量是影响所产生射流状态的关键因素。基于这一现象，我们开发了一种滴液打印技术，该技术可以从毫米尺寸的喷嘴打印出无纳升卫星液滴，从而降低了喷嘴堵塞的风险。使用这种打印技术，我们展示了质量负载为60%的纳米颗粒悬浮液的打印。最后，我们还展示了使用该技术打印用于不同应用的各种墨水，证明了空腔坍塌喷射打印技术在功能性墨水中的可打印性，并显示出在生物测定、电子工业和增材制造等场景中的应用潜力。
