Polymer-based electrospray device with multiple nozzles to minimize end effect phenomenon

Tran, Si Bui Quang; Byun, Doyoung; Nguyen, Vu Dat; Yudistira, Hadi Teguh; Yu, Myoung Jong; Lee, Kyun Ho; Kim, Jaeuk U.

doi:10.1016/j.elstat.2009.11.011

Cited by 33 publications

(8 citation statements)

References 29 publications

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“…The scaling laws allow obtaining a deeper and complete understanding of the electrospraying mechanism based on the influences of the solution properties and operating parameters. Thus, according to the experimental situation, the selection of the appropriated theoretical approach predicts the formation of the cone-jet mode and provides a theoretical guide for the design of the structure and the morphology of electrosprayed droplets by modifying the properties of the solution [81,82]. Yao et al found that the spray current (I) follows the scaling laws of the flow rate (Q) of the polymeric solution are found to be I ∼ Q [58].…”

Section: Mechanism Of Electrosprayingmentioning

confidence: 99%

Influence of Solvent Selection in the Electrospraying Process of Polycaprolactone

2019

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Electrosprayed polycaprolactone (PCL) microparticles are widely used in medical tissueengineering, drug control release delivery, and food packaging due to their prominent structuresand properties. In electrospraying, the selection of a suitable solvent system as the carrier of PCL isfundamental and a prerequisite for the stabilization of electrospraying, and the control ofmorphology and structure of electrosprayed particles. The latter is not only critical for diversifyingthe characteristics of electrosprayed particles and achieving improvement in their properties, butalso promotes the efficiency of the process and deepens the applications of electrosprayed particlesin various fields. In order to make it systematic and more accessible, this review mainly concludesthe effects of different solution properties on the operating parameters in electrospraying on theformation of Taylor cone and the final structure as well as the morphology. Meanwhile,correlations between operating parameters and electrospraying stages are summarized as well.Finally, this review provides detailed guidance on the selection of a suitable solvent systemregarding the desired morphology, structure, and applications of PCL particles.

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Section: Mechanism Of Electrosprayingmentioning

confidence: 99%

Influence of Solvent Selection in the Electrospraying Process of Polycaprolactone

2019

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“…Several studies [9][10][11][12][13][14][15][16] have been published to increase the throughput using multi-nozzle electrospray.…”

Section: Introductionmentioning

confidence: 99%

“…Even though capillary nozzles in a multi-nozzle system have the same potential, they do not have the same electric eld at the boundary nozzles 12 . The end effect arises from the asymmetric electric eld at the tip of the nozzle and repulsive forces among the neighboring jet 12,13,21 . Several researchers [12][13][14]21 attempted to solve the problem by placing non-jetting nozzles (dummy nozzle) at the boundary of the array.…”

Section: Introductionmentioning

confidence: 99%

“…The end effect arises from the asymmetric electric eld at the tip of the nozzle and repulsive forces among the neighboring jet 12,13,21 . Several researchers [12][13][14]21 attempted to solve the problem by placing non-jetting nozzles (dummy nozzle) at the boundary of the array. No liquid is fed through the dummy nozzle, but the same potential is maintained, which reduces the end effect of the active nozzles by creating an external electric eld around the end of the array.…”

Section: Introductionmentioning

confidence: 99%

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Multi-nozzle electrospray method for high-throughput uniform superhydrophobic coating

Kwon

Mosa

Kim

2022

Preprint

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Electrospray is an effective method to fabricate functional layers on substrates. With electrospray, uniform and fine droplets can be created and attracted to the substrate without being blown away using the electric field formed by the nozzle and the substrate. The uniformity of coated layer is seldom affected by the fluid drying process (such as Marangoni flow on substrates) since the size of droplets could reach micron level and the solvents in the droplets could evaporate quickly. That is why the electrospray process is often referred to as ‘dry deposition’. However, when a multi-nozzle electrospray system is considered for a faster fabrication process of large substrates, the drying process could be completely different from that of a single nozzle system. In addition, crosstalk and non-uniform spray volume from each nozzle could be an additional issue to be addressed. In this study, we proposed a multi-nozzle electrospray system and process to average out the non-uniformity of the spray amount and obtain the uniformity of the layer through a fast-drying process. Finally, we demonstrated the effectiveness of our proposed methods by fabricating superhydrophobic layers on a highly insulating substrate.

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“…The electric field can be obtained by solving the Maxwell equation 5,13 to calculate the electrical force. We can use the Rayleigh limit to estimate q 1 and q 2 for the amounts of charge of the droplet and the meniscus.…”

mentioning

confidence: 99%

Retreat behavior of a charged droplet for electrohydrodynamic inkjet printing

Yudistira

Nguyen

Tran

et al. 2011

Applied Physics Letters

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Polymer-based electrospray device with multiple nozzles to minimize end effect phenomenon

Cited by 33 publications

References 29 publications

Influence of Solvent Selection in the Electrospraying Process of Polycaprolactone

Influence of Solvent Selection in the Electrospraying Process of Polycaprolactone

Multi-nozzle electrospray method for high-throughput uniform superhydrophobic coating

Retreat behavior of a charged droplet for electrohydrodynamic inkjet printing

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