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Title: Polymer jet printing of SU-8 micro-dot patterns on Si surface: Optimization of tribological properties
Authors: Tay, N.B. 
Minn, M. 
Sinha, S.K. 
Keywords: Micro-patterning
Issue Date: May-2011
Citation: Tay, N.B., Minn, M., Sinha, S.K. (2011-05). Polymer jet printing of SU-8 micro-dot patterns on Si surface: Optimization of tribological properties. Tribology Letters 42 (2) : 215-222. ScholarBank@NUS Repository.
Abstract: Tribological properties of optimized SU-8 patterns (micro-dots with varying pitch) on Si (silicon) were evaluated using a ball-on-disk tribometer. Sliding tests on the patterns were conducted against a 2-mm diameter Si 3N 4 ball at varying normal loads and sliding velocities. It was observed that the pitch of the SU-8 pattern on Si substrate had a significant effect on the initial coefficient of friction and wear durability. Initial coefficient of friction studies have concluded that the SU-8 polymeric micro-dots improved the tribological properties by sharing the normal force and reducing the contact area. For the wear durability test, ultra-thin layer of perfluoropolyether was over-coated onto SU-8 micro-dot specimens, and the optimized pitch specimens have shown wear durability of more than 100,000 cycles at a normal load of 350 mN. © 2011 Springer Science+Business Media, LLC.
Source Title: Tribology Letters
ISSN: 10238883
DOI: 10.1007/s11249-011-9765-y
Appears in Collections:Staff Publications

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