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Microfluidic devices offer an attractive route towards the miniaturization of chemical and biological processes in lab-on-chip applications. Lab-on-chips can be fabricated from inexpensive polymers such as polycarbonate (PC), poly-methyl methacrylate (PMMA) and cyclic olefin co-polymers (COC). Hot embossing of polymers is an attractive route to fabricating chips with feature dimensions ranging from...
We report on the hot roller embossing of polymer sheets for the creation of microfluidic structures. Measurements conducted on 100 mum features showed that the lateral dimensions could be replicated to within 2% tolerance, while over 85% of mould depth was embossed. Feature sizes down to 50 mum and feature depths up to 30 mum had been achieved. At lower temperatures, asymmetric pile up of polymer...
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