Electrohydrodynamic Jet Printing
Electrohydrodynamic Jet Printing - Related Videos
09:16
High-resolution Patterning Using Two Modes of Electrohydrodynamic Jet: Drop on Demand and Near-field Electrospinning
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Cited by 12 •
2018
Here, we present a protocol to produce high-resolution conductive patterns using electrohydrodynamic (EHD) jet printing. The protocol includes two modes of EHD jet printing: the continuous near-field electrospinning (NFES) and the dot-based drop-on-demand (DOD) EHD printing.
13:29
Jet Impinging on an Inclined Plate
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2023
Source: Ricardo Mejia-Alvarez and Hussam Hikmat Jabbar, Department of Mechanical Engineering, Michigan State University, East Lansing, MI The goal of this experiment is to demonstrate how a fluid flow exerts forces on structures by conversion of dynamic pressure into static pressure. To this end, we will make a plane jet impinge on a flat plate and will measure the resulting pressure distribution along the plate. The resultant force will be estimated by integrating the product between the...
05:32
3D Printing of In Vitro Hydrogel Microcarriers by Alternating Viscous-Inertial Force Jetting
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Cited by 5 •
2021
Presented here is a mild 3D printing technique driven by alternating viscous-inertial forces to enable the construction of hydrogel microcarriers. Homemade nozzles offer flexibility, allowing easy replacement for different materials and diameters. Cell binding microcarriers with a diameter of 50-500 µm can be obtained and collected for further culturing.
08:35
Lipid Bilayer Vesicle Generation Using Microfluidic Jetting
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Cited by 16 •
2014
Microfluidic jetting against a droplet interface lipid bilayer provides a reliable way to generate vesicles with control over membrane asymmetry, incorporation of transmembrane proteins, and encapsulation of material. This technique can be applied to study a variety of biological systems where compartmentalized biomolecules are desired.
08:21
Permeabilization of Adhered Cells Using an Inert Gas Jet
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Cited by 3 •
2013
This protocol describes a method for the temporary permeabilization of adherent cells using an inert gas jet. This technique facilitates the transfer of genetic material and biomolecules into adherent mammalian cells by the utilization of mechanical forces to disrupt the plasma membrane.
FAQs
The critical event is the balance between electrical force and surface tension. Applying voltage charges the liquid at the nozzle, and increasing electrical influence until it exceeds surface tension deforms the meniscus into a Taylor cone. That cone focuses liquid into a fine jet, allowing material to leave the nozzle in a controlled form rather than remaining in the meniscus.
Feature size and placement depend on the interaction of voltage, flow rate, nozzle-to-substrate distance, and the material’s properties. These variables are not isolated settings: together, they determine how the charged liquid leaves the nozzle and reaches the collector. Researchers adjust them to tune the resulting pattern, selecting conditions that support either discrete deposition or continuous microscale structures.
The distinction lies in the form of material delivered to the substrate. Droplet output creates separate deposited units, whereas continuous-filament output creates connected microscale material paths. Both modes are available within the same electrically driven process, but they support different design goals: droplets can serve patterning needs, while filaments are relevant to scaffold fabrication.
A basic workflow starts by placing liquid material in a printing nozzle opposite a collector or substrate. Researchers apply voltage to charge the liquid, observe formation of the Taylor cone and jet, then tune flow rate, nozzle-to-substrate distance, and material properties to obtain the desired deposition pattern. These adjustments determine whether the output forms droplets or continuous filaments.
In bioengineering, Electrohydrodynamic Jet Printing supports microscale patterning of biomaterials and fabrication of scaffolds. Its ability to control where material is deposited also makes it relevant to engineered tissues and devices, where researchers may need organized material features rather than an undifferentiated layer. The same approach can accommodate conductive or biological components within these structures.
The resulting print can provide either discrete droplets or continuous filaments, depending on the selected operating conditions. That distinction gives bioengineering researchers two kinds of structural output for experiments: patterned biomaterial deposits or filament-based scaffold features. It also supports the placement of conductive or biological components when engineered tissues or devices require those materials to be integrated into a defined design.