Droplet morphology analysis of drop-on-demand inkjet printing

作     者：Hu-xiang Xia Takechi Kensuke Tajima Shin Kawamura Yoshiumi Qing-yan Xu Hu-xiang Xia;Takechi Kensuke;Tajima Shin;Kawamura Yoshiumi;Qing-yan Xu

作者机构：Key Laboratory for Advanced Materials Processing Technology(MOE)School of Materials Science and EngineeringTsinghua UniversityBeijing 100084China Toyota Central R&D Labs.Inc.41-1 Yokomichi NagakuteAichi 480-1192Japan Frontier Research CenterToyota Motor Corporation1 Toyota-ChoToyotaAichi 471-8572Japan 

出 版 物：《China Foundry》 (中国铸造（英文版）)

年 卷 期：2024年第21卷第1期

页      面：20-28页

核心收录：

学科分类：08[工学] 0806[工学-冶金工程] 080203[工学-机械设计及理论] 0802[工学-机械工程] 

基　　金：supported by the Tsinghua University–Toyota Research Center Project。 

主　　题：microdevice fabrication inkjet printing droplet morphology modeling and simulation 

摘      要：As an accurate 2D/3D fabrication tool,inkjet printing technology has great potential in preparation of micro electronic devices.The morphology of droplets produced by the inkjet printer has a great impact on the accuracy of deposition.In this study,the drop-on-demand(DoD)inkjet simulation model was established,and the accuracy of the simulation model was verified by corresponding experiments.The simulation result shows that the velocity of the droplet front and tail,as well as the time to disconnect from the nozzle is mainly affected by density(ρ),viscosity(μ)and surface tension(σ)of droplets.When the liquid filament is about to disconnect from the nozzle,the filament length and filament front velocity are found to have a linear correlation withσ/ρμand ln(ρ/(μσ1/2)).