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Colorless ink produces multiple colors when printed

by • February 15, 2016 • No Comments

Whilst many of us may not donate much idea to the dyes utilized in color inks, they are in fact frequently really toxic. That is definitely why scientists at Russia’s ITMO University have created a additional eco-friendly alternative – a non-toxic ink that creates various colors by altering the nanostructure of the material to that it is actually applied.

Such “nanostructure inks” work in a manner much like to sure surfaces discovered in nature, which include butterfly wings – they reflect light in such a way that the light frequencies interfere with one another, cavia the surface to look to be a donaten color.

Previous attempts at creating these inks have needd either a high-temperature fixing system, or they’ve had to be applied to specialized printing surfaces. In this latest case, yet, both of those limitations were overcome.

Led by Aleksandr V. Yakovlev and Alexandr V. Vinogradov, the ITMO team created a colorless titanium dioxide-based colloidal ink that does not need high-temperature fixing, and that can be applied to a wide variety of surfaces. It’s applied via a regular inkjet printing device, and its perceived color can be changed by varying the thickness of the deposited ink … although vibrant red is reportedly yet a bit of a challenge.

A paper on the research was not long ago published in the journal ACS Nano.

Source: American Chemical Society

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