Numerical and Experimental Evaluation of Picoliter Inkjet Head for Micropatterning of Printed Electronics
- Authors
- Yoo, Young-Seuck; Kim, Changsung Sean; Park, Yoon Sok; Sim, Won-Chul; Park, Changsung; Joung, Jaewoo; Park, Jin-Goo; Oh, Yongsoo
- Issue Date
- May-2010
- Publisher
- IOP Publishing Ltd
- Citation
- Japanese Journal of Applied Physics, v.49, no.5, pp.1 - 5
- Indexed
- SCIE
SCOPUS
- Journal Title
- Japanese Journal of Applied Physics
- Volume
- 49
- Number
- 5
- Start Page
- 1
- End Page
- 5
- URI
- https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/39857
- DOI
- 10.1143/JJAP.49.05EC11
- ISSN
- 0021-4922
- Abstract
- A design process based on multiphysics modeling and micro-electro-mechanical systems (MEMS) fabrication has been established to develop a picoliter inkjet printhead for micro-patterning for printed electronics. Piezoelectric actuator is designed with numerical analysis using Covent-Ware with consideration of electrical characteristic of piezoelectric material and physical characteristic of silicon structure. The displacements of a piezoelectric actuator according to voltage waveform are evaluated and verified by laser doppler vibrometer (LDV). Piezoelectric printheads have been fabricated with silicon and silicon-on-insulator (SOI) wafers by MEMS process and silicon to silicon bonding method. As a preliminary approach, liquid metal jetting phenomena are identified by simulating droplet ejection and droplet formation in a consequent manner. Parametric studies are followed by the design optimization process to deduce key issues to inkjet head performance: printhead configuration, input voltage amplitude, ink viscosity and meniscus movement using computational fluid dynamics (CFD). By adjusting the driving voltage along with optimizing the drive waveform, the droplet volume and velocity can be controlled and evaluated by a drop watcher system. As a result, inkjet printhead capable of ejecting 1 pL droplet, which is required by electronic applications such as fabricating metal lines on printed circuit board (PCB), is developed. (C) 2010 The Japan Society of Applied Physics
- Files in This Item
-
Go to Link
- Appears in
Collections - COLLEGE OF ENGINEERING SCIENCES > DEPARTMENT OF MATERIALS SCIENCE AND CHEMICAL ENGINEERING > 1. Journal Articles
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.