Abstract
An approach to rapidly produce high-quality polymer surface topographies from numerically generated surfaces is presented. The approach uses an advanced surface generation tool to flexibly design surfaces with user-defined topography characteristics over a large range of surface roughness. Roughness instances with root mean square roughness 25, 50, and 100 μm are studied. 3D printing is used to create a master surface and polymer casting and injection molding are employed to enable rapid replication in various polymers. The cross-correlation ratio (CCR) and a mean difference approach were used to assess replication quality. Injection molding provides high throughput with high replication quality up to CCR ≈ 0.74. While casting in low-viscosity polymer resins enables slightly improved high-quality replication (CCR up to ≈0.82) with reduced throughput. Key results include the ability of the 3D-printed surfaces to replicate tailored variations in surface topography (e.g., amplitude and frequency) and the importance of low viscosity resins in maximizing replication quality in polymer casting. Several interfacial and surface phenomena (both mechanical and biological) are sensitive to surface roughness. The main application lies in providing a valuable tool for research looking at topography influencing phenomena ranging from friction and lubrication to aerodynamic drag, algae growth, and cell growth.
Original language | English |
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Article number | 2200832 |
Number of pages | 14 |
Journal | Advanced Engineering Materials |
Volume | 25 |
Issue number | 1 |
Early online date | 9 Sept 2022 |
DOIs | |
Publication status | Published - 1 Jan 2023 |
Bibliographical note
Funding Information:The authors would like to acknowledge the support of the Leverhulme Trust which supported the overall research (and a Ph.D. studentship for J.P.) under project grant “Fundamental Mechanical Behaviour of Nano and Micro Structured Interfaces” (RPG‐2017‐353). N.G. acknowledges ERC funding through the FAKIR 648892 Consolidator Award and support from the Research Council of Norway through its Centres of the Excellence funding scheme, Project No. 262613. Staff at Glasgow's James Watt Nanofabrication Centre (JWNC) are thanked for their support of the work. The authors would also like to thank Mr. Neil Convery for his help with injection molding.
Publisher Copyright:
© 2022 The Authors. Advanced Engineering Materials published by Wiley-VCH GmbH.
Keywords
- 3D printing
- additive manufacture
- polymers
- rough surface
- tribology