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Reduction of droplet volume by controlling actuating waveforms in inkjet printing for micro-pattern formation
- Gan, H. Y. (author)
- Shan, Xuechuan (author)
-
- Eriksson, T (author)
- Uppsala universitet,Institutionen för teknikvetenskaper
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- Lok, K (author)
- Lam, Y. C. (author)
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- (creator_code:org_t)
- 2009-04-28
- 2009
- English.
- In: Journal of Micromechanics and Microengineering. - : IOP Publishing. - 0960-1317 .- 1361-6439. ; 19:5, s. 055010-
- Journal article (peer-reviewed)
Abstract
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- Inkjet printing has proven to be a promising and flexible process methodology for low cost and drop-on-demand pattern formation in small-scale production of micro-electro-mechanical systems. To optimize the micro-patterns formed by inkjet printing, an accurate control of droplet volume is essential and critical. In this study, an inkjet system with a nozzle driven by a circular piezoelectric element was used to explore the impact of different waveforms on droplet volume. The investigation into this study included the impact of unipolar, bipolar, M-shaped and W-shaped waveforms as well as the effects of their amplitudes and pulse durations. The inkjetting behavior of Newtonian and non-Newtonian fluids under different actuating waveforms was studied in order to obtain a maximum reduction in ejected droplet sizes. An effective reduction of droplet volume in the range of 50-80% was demonstrated. The results of inkjetting PEDOT ink on a polished silicon surface showed that a 50% reduction in line width was achieved.
Keyword
- TECHNOLOGY
- TEKNIKVETENSKAP
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- ref (subject category)
- art (subject category)
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