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

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.


Published in:
Micro and Nanosystems , 1, 1, 63-67
Year:
2009
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Note: The status of this file is: EPFL only


 Record created 2009-03-02, last modified 2018-03-18

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