Banknotes printed on the "microcircuit" Germany invented new anti-counterfeiting technology

According to the report of the "Popular Science" magazine of the United States on December 21, researchers from Germany and Japan have recently cooperated in inventing a very simple and effective anti-counterfeiting technology: direct micro-organic circuits are printed on banknotes. This method is very different from the commonly used complex printing techniques such as watermarking, color shifting inks, or implanting 3D security threads, and preliminary experiments prove that the anti-counterfeiting effect is very good.

The US dollar, Swiss franc, yen and euro are experimental subjects and aluminum oxide, gold and organic molecules are directly printed on these currencies to form multilayer thin film transistors. In the end, scientists successfully printed 100 thin-film transistors on each bank note. They only need 3 volts to work, and the power supply can be provided by wireless devices.

At present, the researchers have not found a way to prevent the counterfeiting of such banknotes, but this experiment can at least prove that it is entirely feasible to directly print the micro-flexible circuit onto banknotes. Scientists said that such a circuit can easily track the direction of currency circulation and verify its authenticity.