Drop-On-Demand Inkjet Printing of SU-8 Polymer

Author(s): Vahid Fakhfouri, Gregory Mermoud, Joo Yeon Kim, Alcherio Martinoli, Juergen Brugger

Journal Name: Micro and Nanosystems

Volume 1 , Issue 1 , 2009

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This paper presents drop-on-demand inkjet printing of SU-8 on functionalized surfaces for direct printing of computer controlled polymer patterns. The high viscosity of SU-8 required an in-depth investigation of the print parameters such as pulse amplitude, pulse length and temperature in the piezo-actuated nozzle. The results show that the optimal drop velocity to obtain a stable printing is ∼2 ms-1 which corresponds to pulse amplitude and length of 220 V and 70-80 μs, respectively. The diameter of the SU-8 drop was reduced from 117 μm on non-treated silicon to 58 µm on a surface terminated by a silane-based self-assembled monolayer.

Keywords: Inkjet, drop-on-demand, SU-8, self-assembled monolayer, functional materials

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Article Details

Year: 2009
Page: [63 - 67]
Pages: 5
DOI: 10.2174/1876402910901010063

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PDF: 27