Electrohydrodynamic embedded printing of low-viscosity ink: printability and ink rheology

Journal of Materials Processing Technology, Journal Year: 2025, Volume and Issue: unknown, P. 118753 - 118753

Published: Feb. 1, 2025

Language: Английский

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Experimental Analysis of Electrohydrodynamic Jet Actuation Modes Based on the Phase Doppler Technique

Actuators, Journal Year: 2025, Volume and Issue: 14(3), P. 141 - 141

Published: March 13, 2025

Electrosprays have garnered significant interest across various fields, from automotive painting to aerospace propulsion, due their versatility and precision. This study aims explore the formation behavior of Taylor cone in electrospray systems through observation different characteristics produced droplets, a way enhance control electrohydrodynamic jet. To obtain these results, SpraySpy equipment was used, based on phase Doppler technique, obtaining several such as velocity, size distribution for single liquid, acetone. These were acquired by varying parameters, namely distance between emitter collector, liquid flow rate diameter emitter. Additionally, high-speed camera used capture angle, same operating conditions. The findings revealed considerable decrease particle velocity with an increase rate, while droplet exhibited noticeable tendency grow under diameter. insights aim provide deeper understanding relationship operational parameters behavior, contributing improvement applications.

Language: Английский

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Numerical modeling and deposition pattern simulation for the whole process of electrohydrodynamic atomization printing

Physics of Fluids, Journal Year: 2025, Volume and Issue: 37(3)

Published: March 1, 2025

Electrohydrodynamic atomization printing (EHDAP) is an additive manufacturing technology of high interest due to its multiple deposition modes and controlled on arbitrary surfaces. However, there are rheological states as well strong influence parameters during the process, pattern prone discontinuities, scattering, other undesirable qualities. At present, mechanism operating not clear enough. The lack a full-process analytical model prevents direct studies patterns quality. This study proposes hybrid analysis method based three-dimensional Lagrangian particle model. initial injection fission charged droplets considered. whole process was simulated by this method, accuracy simulation verified comparison experiments. result shows that jet state droplet size distribution main reasons affecting variation pattern. effects range were analyzed. BoE-Q*, BoE-U*, Q*-U* transition phase diagrams about four investigated, where BoE dimensionless electric Bond number, Q* flow rate, U* velocity. For first time, intervals for satellite-free given. Fabrication results exhibit work provides general laws high-quality print optimizing EHDAP.

Language: Английский

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Modeling a Continuously Operating Electrospray Ionization Emitter Using Molecular Dynamics Simulations: From Bulk Solution to Gaseous Ions

The Journal of Physical Chemistry B, Journal Year: 2025, Volume and Issue: unknown

Published: April 10, 2025

Numerous analytical workflows involve electrospray ionization (ESI), a process that converts solution species into gaseous ions for detection by mass spectrometry (MS). Upon exposure of solution-filled emitter capillary to an electric field, ESI proceeds via liquid jet forms at the apex Taylor cone. Breakup this generates charged droplets ultimately release analyte gas phase. Many facets these events remain incompletely understood. Molecular dynamics (MD) simulations have become important tool mechanistic investigations. Here, we extend modeling efforts entire capillaries. Such face significant challenges. Chief among is fact experimental emitters operate in steady-state mode, where ejected constantly replenished from upstream reservoir. Previous MD employed capillaries with finite amount solution, resulting only short bursts sprayer operation. The current work develops algorithm combines trajectory stitching "solution recycling". This periodically removes droplets, while simultaneously replenishing inlet fresh solution. For first time, approach provides continuous MD-based operation, keeping instantaneous number atoms (and hence computational cost) manageable. 50 ns simulation, illustrate reduction wall clock time estimated 5000 days 20 days. performed here are most detailed date, providing insights properties cone and behavior nascent droplets. Focusing on aqueous NaCl comprehensive perspective process, MS-detectable ions.

Language: Английский

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Enhancing Electrostatic Spray-Painting Efficiency with Modified High-Voltage Conductors: A Numerical Study on Pulsed Electric Fields

Journal of Aerosol Science, Journal Year: 2024, Volume and Issue: unknown, P. 106491 - 106491

Published: Nov. 1, 2024

Language: Английский

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