Conductive Ink: Let’s Know the Basics
Ever heard of ink conducting electricity? Surprised? Let’s know about it.
Conductive Ink is the form of ink, infused with conductive materials like silver or graphite that can carry out electricity. Some people believe that, in the future, it might permit electrical circuits to be imprinted on paper or other adaptable surfaces.
There are already live examples of simple circuit boards using conductive inks like subway or train systems’ disposable passes. However, with all its qualities, conductive ink circuits do not have very good resistance. Solid metals are more conductive than conductive ink in flakes or powder form. Hence, circuits made from solid copper are more efficient in generating more electrical energy and less heat.
The main reason behind the evolution of conductive ink was the use in e-textile industries, but nowadays it has many uses, most commonly in printing metallic structures or formations. Conductive ink has a vital benefit that it can be very well altered to oblige a wide range of industry prerequisites. For instance, conductive inks can be applied once the primary product has been produced, without interfering with the complete production process.
There are many places where conductive inks are used like for printing RFID tags, silver-infused conductive inks work best. Silver-infused inks are also used in computer keyboards that have membranes containing printed circuits, which sense the pressure on the key. Conductive inks are also used in the windshield defrosters with resistant traces on the glass.
Conductive inks are also a good conductor of electricity, but not like traditional materials that are still used in making electrical circuits. The electrons need to move through the material that needs to conduct electricity. Similarly, conductive ink allows electric current to flow through the materials. Metals are in their natural solid form at room temperature, except mercury. However, to produce the ink, metals or conductive materials need to be in liquid form while still retaining their conductive potential as much as possible.
The most common solution for this is to produce metal nano particles that resulted in liquid form. Each nano particle can conduct electricity and when cords of these nano particles form, electrons travel from one to the other nano particle. Hence, when the ink is finally dried, the nano particles, in the form of a chain, get locked forming a permanent conductive path for the electricity to travel.
Although they are still greatly conductive, they are naturally less conductive than the non-conductive ink. However, with improvement in conductive ink technology, there might be a time when conductive ink will be able to challenge traditional solutions.
