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Improve aerosol jet printing by annular acoustic field focusing technology to solve the splashing and instability problems in high-resolution printing.
Optimization of acoustic field focusing frequency:
The researchers determined the optimal focusing frequency of 5.8 MHz for precise control of silver nanoparticles.
Nozzle geometry improvement:
An improved nozzle design containing two conical focusing areas is proposed to create an annular acoustic field to reduce droplet drift and splashing.
Experimental verification:
The experiment successfully achieved ultra-fine printing lines (line width less than 6 microns and splash less than 0.1 microns), with a 60% reduction in line width and a 180% increase in conductivity compared to printing without acoustic field focusing technology.
Long-term stability test: An 8-hour printing experiment was conducted to evaluate the stability during the printing process, showing effective consistency of the printing traces.
Fluid dynamics model analysis:
The behavior of aerosol particles in the nozzle was analyzed using a three-dimensional computational fluid dynamics model, revealing the interaction between the annular acoustic field and the flow field.
Material Pretreatment:
Prior to aerosol jet printing, nanofiber substrates can be prepared using electrospinning. These substrates can serve as carriers for printed materials and improve the mechanical stability and conductivity of printed structures.
Composite Structure Fabrication:
Fiber-like structures are fabricated using electrospinning and then electronic components or sensors are added to them using aerosol jet printing to create complex multifunctional structures.
Surface Modification:
Electrospinning can be used to form coatings with specific chemical or physical properties on the surface of a substrate that can improve the adhesion or conductivity of aerosol jet printed materials.
Electrospinning Nanofibers Article Source:
