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Fused filament fabrication 3D printed polylactic acid electroosmotic pumps

Journal Article


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.

Publication Date


  • 2021

Citation


  • Wu, L., Beirne, S., Cabot, J. M., Paull, B., Wallace, G. G., & Innis, P. C. (2021). Fused filament fabrication 3D printed polylactic acid electroosmotic pumps. Lab on a Chip, 21(17), 3338-3351. doi:10.1039/d1lc00452b

Scopus Eid


  • 2-s2.0-85113762138

Start Page


  • 3338

End Page


  • 3351

Volume


  • 21

Issue


  • 17

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.

Publication Date


  • 2021

Citation


  • Wu, L., Beirne, S., Cabot, J. M., Paull, B., Wallace, G. G., & Innis, P. C. (2021). Fused filament fabrication 3D printed polylactic acid electroosmotic pumps. Lab on a Chip, 21(17), 3338-3351. doi:10.1039/d1lc00452b

Scopus Eid


  • 2-s2.0-85113762138

Start Page


  • 3338

End Page


  • 3351

Volume


  • 21

Issue


  • 17