This luminescent ink is applied to a surface by a standard printing technique (Image: Dai Nippon)
ELECTRONIC displays that can be printed onto virtually any surface, including paper and fabric, are now a step closer, thanks to the creation of a light-emitting ink.
A team at in Tokyo, Japan, has used a conventional screen-printing technique to deposit a thin layer of the ink, a luminescent gel, onto a surface. The gel consists of a ruthenium compound that emits a bright light when a voltage is applied to it, along with an electrolyte and silica nanoparticles.
“The ink holds a compound of ruthenium…
