Selection of Suitable Control Parameters for Proper High-Resolution Deposition Performance of E-Jet Microfabrication Process

Abstract

E-jet is a high-resolution microfabrication technology. Its operation depends on several process control parameters like applied voltage, flow rate of the material, stand-off height, type of ink material. High-resolution deposition along with high ejection frequency is the performance parameter of E-jet. In the present study, an attempt is made to design the process parameters in such a way that it could simultaneously satisfy both the performance characteristics of the E-jet process. A Taguchi robust design-based utility concept is applied to optimize the multi-response E-jet process through a case study. The optimization result is compared with another multi-objective optimization method called Grey relational grade analysis. The comparative analysis showed that both the methodologies identified the same process parameter combination for improved E-jet performance. Analysis of variance found applied voltage is the most influential control factor in the investigated region. The anticipated improvement in performance shows the successful implementation of the aforesaid methodology.