Please use this identifier to cite or link to this item: https://doi.org/10.1007/s00542-009-0905-3
Title: Comparison of micro-dispensing performance between micro-valve and piezoelectric printhead
Authors: Sun, J. 
Ng, J.H.
Fuh, Y.H. 
Wong, Y.S. 
Loh, H.T. 
Xu, Q.
Issue Date: Sep-2009
Source: Sun, J., Ng, J.H., Fuh, Y.H., Wong, Y.S., Loh, H.T., Xu, Q. (2009-09). Comparison of micro-dispensing performance between micro-valve and piezoelectric printhead. Microsystem Technologies 15 (9) : 1437-1448. ScholarBank@NUS Repository. https://doi.org/10.1007/s00542-009-0905-3
Abstract: In micro-dispensing applications, printhead activation mechanism, its design and operating parameters are integrated together to affect the droplet generation process. These factors give each printhead advantages and limitations over the others in specific fabrication. Hence, multiple printheads on micro level fabrication are preferred to perform multi-material dispensing task. In this paper, the mechanisms of two commonly used micro printheads, solenoid actuated micro-valve and piezoelectric printhead are discussed. Comprehensive experiments are conducted to characterize their performance and the results are analyzed so as to explore optimal droplet formation condition. With regards to the operational parameters' influence on droplet formation, micro-valve is investigated in terms of pressure, and operational on time, and piezoelectric printhead is investigated based on pulse amplitude, and width of driving pulse. Nozzle size, a key design parameter in the two printheads, is also studied according to its influence on dispensing capability. To facilitate dispenser selection, the two printheads are compared based on droplet size, droplet stability, droplet velocity, and dispensing viscosity of successful ejection. Other factors such as chemical compatibility, time consumption in determining optimal condition and reliability of dispensing process are also reported to play an essential role in this selection. Our investigation on the relationship between related parameters and dispensing performance will not only benefit dispenser selection in multi-material dispensing application, but also build a solid background to develop multiple printhead system for fabrication of bioengineering components. © 2009 Springer-Verlag.
Source Title: Microsystem Technologies
URI: http://scholarbank.nus.edu.sg/handle/10635/59741
ISSN: 09467076
DOI: 10.1007/s00542-009-0905-3
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

SCOPUSTM   
Citations

17
checked on Dec 13, 2017

WEB OF SCIENCETM
Citations

13
checked on Nov 16, 2017

Page view(s)

52
checked on Dec 10, 2017

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.