A study on the droplet-jet electrospinning modes: Dynamic behavior and control theory

Physics of Fluids, Journal Year: 2025, Volume and Issue: 37(1)

Published: Jan. 1, 2025

The steady droplet-jet electrospinning mode is a preferred for the production of fine nanofibers. However, it can only be achieved within narrow range operating parameters. experimental findings on are not universally applicable due to coupled interactions among solution properties, electric field configurations, and Additionally, dynamic behavior meniscus complicates identification stable shape parameters meniscus, such as volume contact angle, offer unified easily measurable evaluation stability, yet comprehensive investigation lacking. In this paper, we identified various modes transitions between them from captured images process. Subsequently, volumes electrical angles in one-jet were measured by an image processing method. Based relationship inflow outflow rates, characterized fluctuations volume, classified into oversupply, equilibrium, undersupply regimes. We employed Gibbs inequality condition explain principles governing these alignment results predicted values supports assumption that depends intrinsic properties liquid needle geometry. Furthermore, established voltage-control law angle applied voltage, inspired electrowetting theory. These provide theoretical foundation controlling processes.

Language: Английский

---

The Hydrodynamics of Electrically Charged Flows

Processes, Journal Year: 2025, Volume and Issue: 13(2), P. 567 - 567

Published: Feb. 17, 2025

Electrically charged flows were investigated using experimental techniques. These visualized and recorded employing high-speed video, which allowed the study of formation electrically filaments, focusing on flow characteristics at meniscus rupture downstream atomization region. Experiments performed following design-of-experiments methodology, provided information effect main factors their combinations response variables, such as spray angle, size distribution, particle number. Meniscus its analyzed a function competition between forces. Furthermore, different modes determined electric field intensity (electric Bond number, Boe). The findings reveal that best condition is defined by stable Taylor cone jet (at rupture). However, results differ atomization, since characterized poor dispersion. To improve conditions, it was found with oscillation around vertical axis detachment (controlled instability) lead to better atomization. This because greater dissemination particles promoted, homogeneity product smaller sizes are generated. A secondary process causes conditions after meniscus, known Coulomb fission.

Language: Английский

---

High-aspect-ratio three-dimensional stacked microstructures enabled by plasma-induced electrospinning writing

Materials Today Communications, Journal Year: 2025, Volume and Issue: unknown, P. 112693 - 112693

Published: May 1, 2025

Language: Английский

---

Investigation of surface charging dynamics and effects on ink jetting behaviors for plasma-induced electrohydrodynamic printing

Journal of Manufacturing Processes, Journal Year: 2024, Volume and Issue: 133, P. 1352 - 1363

Published: Dec. 19, 2024

Language: Английский

---