Journal article
On The Role of Wetting, Structure Width, and Flow Characteristics in Polymer Replication on Micro- and Nanoscale
University of Applied Sciences and Arts Northwestern Switzerland1
Paul Scherrer Institute2
Department of Micro- and Nanotechnology, Technical University of Denmark3
Polymer Micro & Nano Engineering, Department of Micro- and Nanotechnology, Technical University of Denmark4
TU Dortmund University5
The replication of functional polymeric micro- and nanostructures requires a deep understanding of material and process interrelations. In this investigation the dewetting potential of a polymer is proposed as a simple rationale for estimation of the replicability of functional micro- and nanostructures by injection molding.
The dewetting potential of a polymer is determined by integrating the spreading coefficient over the range from melt temperature to no-flow temperature. From all polymers tested, the lowest dewetting potential is calculated for PP and the highest for polymethylmethacrylate. The dewetting potential correlates well with the replicated height of four different structures covering both the micro- and the nanorange on two different surfaces (brass and fluorocarbon modified nickel) and polymers with different spreading coefficients.
It is clearly shown that a lower dewetting potential of a polymer leads to a better replication accuracy. Additionally a parabolic relationship is demonstrated between filled height and structure width.
Language: | English |
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Year: | 2016 |
Pages: | 597-609 |
ISSN: | 14392054 and 14387492 |
Types: | Journal article |
DOI: | 10.1002/mame.201500350 |