Low-cost digital microfluidic approach on thin and pliable polymer films

Chai, Dongping; Jiang, Jiaxi; Fan, Yiqiang

doi:10.1080/10739149.2022.2042819

Cited by 1 publication

(1 citation statement)

References 26 publications

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“…It should be noted that the intrinsic high wettability of paper (due to its fibrous porosity) can be a hinderance in many digital microfluidic operations. For this reason, other types of substrates, which have the form of paper but not its strong wetting characteristics, have been investigated for digital microfluidics [ 24 , 25 , 26 ].…”

Section: Introductionmentioning

confidence: 99%

Graphene Oxide Paper Manipulation of Micro-Reactor Drops

et al. 2023

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Digital microfluidics, which relies on the movement of drops, is relatively immune to clogging problems, making it suited for micro-reactor applications. Here, graphene oxide paper of 100 μm thickness, fabricated by blade coating sedimented dispersions onto roughened substrates, followed by drying and mechanical exfoliation, was found to be relatively free of cracks and curling. It also exhibited high wettability and elasto-capillary characteristics. Possessing low enough stiffness, it could rapidly and totally self-wrap water drops of 20 μL volume placed 2 mm from its edge when oriented between 0 and 60° to the horizontal. This complete wrapping behavior allowed drops to be translated via movement of the paper over long distances without dislodgement notwithstanding accelerations and decelerations. An amount of 2 drops that were wrapped with separate papers, when collided with each other at speeds up to 0.64 m/s, were found to eschew coalescence. This portends the development of robust digital microfluidic approaches for micro-reactors.

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Section: Introductionmentioning

confidence: 99%