Time and cost effective inkjet-based circuits developed
Washington: A team of researchers has developed a novel method to rapidly and cheaply make electrical circuits by printing them with commodity inkjet printers and off-the-shelf materials.
For about 300 dollars in equipment costs, anyone can produce working electrical circuits in the 60 seconds it takes to print them.
Researchers from Georgia Tech, the University of Tokyo and Microsoft Research, have developed the technique, called instant inkjet circuits, that allows the printing of arbitrary-shaped conductors onto rigid or flexible materials and could advance the prototyping skills of non-technical enthusiasts and novice hackers.
"We believe there is an opportunity to introduce a new approach to the rapid prototyping of fully custom-printed circuits. Unlike existing methods for printing conductive patterns, conductivity in our technique emerges within a few seconds and without the need for special equipment," Gregory Abowd, Regents` Professor in the School of Interactive Computing at Georgia Tech and an investigator in the study said.
Recent advances in chemically bonding metal particles allowed the researchers to use silver nanoparticle ink to print the circuits and avoid thermal bonding, or sintering, a time-consuming and potentially damaging technique due to the heat. Printing the circuits on resin-coated paper, PET film and glossy photo paper worked best.
Yoshihiro Kawahara, Associate Professor at the University of Tokyo said the method can be used to print circuit boards, sensors and antennas with little cost, and it opens up many new opportunities.
Once printed, the circuits can be attached to electronic components using conductive double-sided tape or silver epoxy adhesive, allowing full-scale prototyping in mere hours. The homemade circuits might allow tinkerers to quickly prototype crude calculators, thermostat controls, battery chargers or any number of electronic devices.
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