Fabrication of Electronics by Electrohydrodynamic Jet Printing

Abstract

Electrohydrodynamic jet (e‐jet) printing technology overcomes some limitations such as the viscosity and resolution of the traditional ink‐jet printing by breaking surface tension of the droplets with high voltage and the formation of Taylor cone. The technique is becoming more and more popular because it can be widely used in the fabrication of the conductive line of electronics, electrode, transistor, sensor, and other electronics as microelectrode, microlen, and heater. This review provides insight into the effect of the influence factors such as voltage, speed, nozzle, jetting ink characteristics, and the representative conductive materials of the ink as metal nanoparticles (NPs) and carbon materials, or organic conductive polymers on the fabrication of the different electronics by the e‐jet printing technology. Specially, the characteristics of different resultant electronics are compared and the possible mechanisms are analyzed. Finally, the challenge and development trend of the e‐jet printing technology are discussed, which will shed a light on the fabrication of the next‐generation flexible electronics with better performance.

Key Materials in Solder Mask Ink for Printed Circuit Board

“…The advanced methods are desirable for the practical production which can break the limitation of viscosity such as the electrohydrodynamic jet printing technology. [87] Finally, the widely used thermal setting SMI for PCB easily forms insufficient filling which causes the phenomena as needle holes, ink penetration, and uncovering copper at the edge of PCB. The existence of solvent makes the drying process need high temperature and it is hard to ensure the uniformity of the film.…”

Flexible organic field-effect transistors-based biosensors: progress and perspectives

“…Each technology requires different ink parameters and provides different resolutions and thicknesses of the formed pattern. Particularly, high-resolution structures (line width <1 μm), electrohydrodynamic inkjet printing (E-jet) [ 148 , 149 ], transfer printing [ 150 , 151 ] and nanoimprint [ 152 , 153 ] were used in the processes. Table 2 provides a comparison of the different printing methods.…”

Electrohydrodynamic Printing of High‐Resolution Self‐Reduced Soldered Silver Nanowire Pattern for Wearable Flexible Strain Sensors

“…[29,30,38] The EHD printing system usually consists of three subsystems: voltage system, precise three-axis movable system, and pneumatic dispensing system. [39] The cathode of the voltage system was connected to the metallic nozzle and the ground electrode was connected to the metallic movable stage. Since the Si wafer was placed on the stage, there would be an electrical connection between the Si wafer and the ground electrode of the voltage system.…”