Journal
MACROMOLECULAR MATERIALS AND ENGINEERING
Volume 300, Issue 2, Pages 172-180Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/mame.201400134
Keywords
injection moulding; plasma polymerization; polymer stretching; topographical gradients
Funding
- Engineering and Physical Sciences Research Council (EPSRC) [EP/F047851/1]
- Glasgow Research Partnership in engineering (GRPe)
- EC [FP7-CP-IP214249-2]
- EPSRC Doctoral Training Allowance scholarship
- BBSRC [BB/E012256/1] Funding Source: UKRI
- EPSRC [EP/F047851/1] Funding Source: UKRI
- Biotechnology and Biological Sciences Research Council [BB/E012256/1] Funding Source: researchfish
- Engineering and Physical Sciences Research Council [EP/F047851/1] Funding Source: researchfish
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Injection moulding is a proven technology for high-throughput production of nanostructures, but replication of raised structures is a considerable challenge, due to the complexities of cavity filling. We have developed a platform to systematically study the effects of nanostructures with aspect ratios up to 1.2:1. A master template containing nanostructures with a continuous variation in height is produced by a novel fabrication approach using a plasma polymerized hexane layer, deposited with a thickness gradient, as a sacrificial etch mask. Results show that a careful choice of process parameters can control the stretching of nanopillar replica dimensions, allowing a variety of final pattern heights using a single master.
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