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research article

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

Fakhfouri, Vahid  
•
Mermoud, Grégory  
•
Kim, Joo Yeon  
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2009
Micro and Nanosystems

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.

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0011MNS.pdf

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http://purl.org/coar/version/c_970fb48d4fbd8a85

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