Nanotribological Properties of Bio-mimetic Poly(methyl methacrylic) Hierarchical Patterns
- Nanotribological Properties of Bio-mimetic Poly(methyl methacrylic) Hierarchical Patterns
- 박수학; Pham Duc Cuong; 나경환; 김진석; 양성욱; Kyung-Young Jhang; 윤의성
- PMMA; hierarchical pattern; tribology; AFM
- Issue Date
- 18th International Conference on Wear of Materials
- , p9.11
- This study presents an investigation of hydrophobicity and nanotribological properties of multi-scaled hierarchical polymeric patterns which mimic morphology of the Lotus leaves. The hierarchical patterns made of poly(methyl methacrylic) (PMMA) were fabricated on Si wafers using a two-steps capillary force lithography technique. The PMMA micro- and nano-patterns were fabricated for the purpose of comparison. Results showed that the patterning increases water contact angle (WCA) of the PMMA flat surface. For tribological properties, the micro- and nano-patterns exhibited reduced adhesion and friction forces from the flat PMMA surface; However, the hierarchical patterns showed the lowest values of these forces, presumably due to the smallest contact area. Further, it was found that the pitch affected the WCA as well as the adhesion and friction behaviors of the PMMA hierarchical patterns.
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