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Strategies for High Quality Injection Moulding of Polymer Nanopillars
Author(s) -
Pedersen Rasmus H.,
Xu Qian,
StormonthDarling John M.,
Gadegaard Nikolaj
Publication year - 2015
Publication title -
macromolecular materials and engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.913
H-Index - 96
eISSN - 1439-2054
pISSN - 1438-7492
DOI - 10.1002/mame.201400134
Subject(s) - nanopillar , materials science , fabrication , replica , nanostructure , injection moulding , replication (statistics) , nanotechnology , polymer , throughput , lithography , layer (electronics) , composite material , optoelectronics , computer science , medicine , art , telecommunications , statistics , alternative medicine , mathematics , pathology , visual arts , wireless
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.