Related Experiment Video
Updated: Jul 4, 2025
09:16
High-resolution Patterning Using Two Modes of Electrohydrodynamic Jet: Drop on Demand and Near-field Electrospinning
Published on: July 10, 2018
9.7K
On the Stability of Electrohydrodynamic Jet Printing Using Poly(ethylene oxide) Solvent-Based Inks
Alberto Ramon1, Ievgenii Liashenko1,2,3, Joan Rosell-Llompart2,4
1Catalonia Institute for Energy Research (IREC), Jardins de les Dones de Negre 1, Sant Adrià de Besòs, 08930 Barcelona, Spain.
Nanomaterials (Basel, Switzerland)
|February 9, 2024
Summary
Controlling solvent evaporation is key to stable electrohydrodynamic (EHD) jet printing of polymer patterns. Optimizing polymer molecular weight, solvent choice, and printing conditions enhances jet stability for 3D structures.
Area of Science:
- Materials Science
- Chemical Engineering
- Nanotechnology
Background:
- Electrohydrodynamic (EHD) jet printing enables the fabrication of complex polymeric structures with sub-micrometer resolution.
- The use of solvent-based inks offers material versatility but presents significant challenges in process stability.
- Achieving stable EHD jetting is crucial for translating this technology from research to industrial applications.
Purpose of the Study:
- To investigate the critical parameters influencing the stability of EHD jet printing using solvent-based inks.
- To understand the relationship between solvent evaporation, drop dynamics, and printing process stability.
- To identify strategies for enhancing the reliability and reproducibility of EHD jet printing.
Main Methods:
- Simultaneous monitoring of drop size, jet ejection point, and jet speed during EHD printing.
- Utilizing periodic electrostatic deflection to analyze jet dynamics.
- Systematic variation of printing parameters including solvent, polymer molecular weight, and needle voltage.
Main Results:
- Printing instabilities correlate with variations in drop size, composition, ejection point, and jet speed.
- Solvent evaporation and surface drying significantly impact jet stability.
- High molecular weight polymers and solvents with lower evaporation rates improve printing stability.
- Optimized needle voltages are essential for stable jet ejection.
Conclusions:
- Minimizing solvent evaporation is critical for stabilizing EHD jet printing.
- Selecting appropriate solvents and controlling ambient conditions are key to managing evaporation.
- High molecular weight polymers and careful voltage adjustments enhance jet stability for fabricating polymeric structures.
