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Fused filament fabrication 3D printed polylactic acid electroosmotic pumps

Wu, L, Beirne, S, Cabot, JM ORCID: 0000-0002-3305-078X, Paull, B ORCID: 0000-0001-6373-6582, Wallace, GG and Innis, PC 2021 , 'Fused filament fabrication 3D printed polylactic acid electroosmotic pumps' , Lab on A Chip, vol. 2021, no. 21 , pp. 3338-3351 , doi: 10.1039/D1LC00452B.

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Abstract

Additive manufacturing (3D printing) offers a flexible approach for the production of bespoke microfluidic structures such as the electroosmotic pump. Here a readily accessible fused filament fabrication (FFF) 3D printing technique has been employed for the first time to produce microcapillary structures using low cost thermoplastics in a scalable electroosmotic pump application. Capillary structures were formed using a negative space 3D printing approach to deposit longitudinal filament arrangements with polylactic acid (PLA) in either face-centre cubic or body-centre cubic arrangements, where the voids deliberately formed within the deposited structure act as functional micro-capillaries. These 3D printed capillary structures were shown to be capable of functioning as a simple electroosmotic pump (EOP), where the maximum flow rate of a single capillary EOP was up to 1.0 μl min−1 at electric fields of up to 750 V cm−1. Importantly, higher flow rates were readily achieved by printing parallel multiplexed capillary arrays.

Item Type: Article
Authors/Creators:Wu, L and Beirne, S and Cabot, JM and Paull, B and Wallace, GG and Innis, PC
Keywords: 3D printing, electroosmotic pumps, fused filament fabrication, additive manufacturing
Journal or Publication Title: Lab on A Chip
Publisher: Royal Soc Chemistry
ISSN: 1473-0189
DOI / ID Number: 10.1039/D1LC00452B
Copyright Information:

Copyright 2021 The Royal Society of Chemistry

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