Publisher： Bentham Science Publishers
E-ISSN： 1876-4037|1|1|63-67
ISSN： 1876-4029
Source： Micro and Nanosystems, Vol.1, Iss.1, 2009-03, pp. : 63-67
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Abstract
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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