A research team at the Egyptian Japanese University had succeeded in creating a secret phosphorescent ink using nanotechnology that could be used in making a watermark that is difficult to imitate and cannot be seen when printed on papers except by using blue light, the university’s president Ahmed El-Gohary announced on Monday.
The innovative ink can be used in writing on different types of papers, including financial banknotes or government papers such as educational certificates, birth certificates, or travel documents.
“What also gives great importance to this secret ink is the fact that it can be used in printing distinctive watermarks on securities of all categories that can protect them from forgery,” Mohsen Ghaly, the university’s assistant vice president for research and supervisor of the project, said.
Moreover, due to the use of nanotechnology in the manufacturing process, the economic cost of creating a watermark is very low, Ghaly added.
