Green Science Alliance, part of the Fuji Pigment corporation, has created graphene quantum dot inkjet ink. The prepared graphene quantum dot inkjet ink can be printed on various types of substrates including regular paper and films.
The ink is invisible under normal room light and becomes visible when lit by specific light types. In addition, emission spectra peak will be different depending on the different wavelength of illuminated light, which can be useful for anti-counterfeiting applications.
GSA stated that one would need quantum dot inkjet ink with narrow half width for applications such as displays, so further improvement will be necessary. Green Science Alliance will be working towards this goal, and will also attempt to create quantum dot inkjet ink with different kinds of quantum dots.