2022
DOI: 10.3390/mi13030484
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Precise Droplet Dispensing in Digital Microfluidics with Dumbbell-Shaped Electrodes

Abstract: Electro-wetting-on-dielectric (EWOD) enables the manipulation of droplets on a two-dimensional surface, which provides a versatile technique for digital microfluidics at a micro- or nano-scale. However, the deficiency of the dispensing precision has long limited its applications in micro total analysis systems (μ-TAS) where the accuracy of assays is largely determined by the volume control of the reagent dosing. This paper proposes optimum electrode designs and carries out characterization experiments to demon… Show more

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Cited by 7 publications
(3 citation statements)
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“…It is observed that the proposed method yields more evenly split droplets, with CV value being limited to below 2.8%, which is lower than CV value 5.62% (The CV value is basically consistent with that of traditional droplet dispense. 49 ) (Fig. 7e and †Fig.…”
Section: Ai-assisted Multistate Droplet Controlmentioning
confidence: 92%
“…It is observed that the proposed method yields more evenly split droplets, with CV value being limited to below 2.8%, which is lower than CV value 5.62% (The CV value is basically consistent with that of traditional droplet dispense. 49 ) (Fig. 7e and †Fig.…”
Section: Ai-assisted Multistate Droplet Controlmentioning
confidence: 92%
“…Digital microfluidics (DMF) have been extensively studied for liquid handling at a microscale level [ 1 ]. Based on the effect of electrowetting-on-dielectric (EWOD), the DMF is able to control the wetting behavior of droplets through an array of electrodes and manipulate the droplets to split, dispense, mix and transfer without mechanical accessories [ 2 , 3 , 4 ]. Recent advances in manufacturing and electronic techniques have significantly promoted the development of DMF systems to achieve advantages such as a low power consumption, low reagent cost, miniaturization, flexibility and reconfiguration [ 5 , 6 ] Hence, the applications of DMF are increasingly being extended to fields such as point-of-care testing [ 7 , 8 ], cell research [ 9 , 10 , 11 , 12 ], biomedicine [ 13 ] and environmental monitoring [ 14 , 15 ].…”
Section: Introductionmentioning
confidence: 99%
“…Recientemente, el grupo de Wang ha desarrollado un sistema novedoso compuesto por un electrodo intermedio con forma de mancuerna que permite crear gotas de volúmenes precisos y de forma reproducible (Figura 3. 21. b) (Wang, 2022).…”
Section: Operaciones Básicasunclassified