Rewritable paper: Prints with light, not ink | Science News for Students


A new type of paper can be used and reused up to 20 times. What’s more, it doesn’t require any ink. Its designers think that this new technology could cut down on tons of waste — and save people tons of money.

A special dye embedded in the paper makes it printable and rewritable. The dye goes from dark to clear and back when chemical reactions move electrons around. (Electrons are the subatomic particles that orbit in the outer regions of an atom.) The paper’s color-change chemical undergoes what are known as redox reactions. Redox is short for reduction and oxidation.
Find the best paper printing options here- http://matthewrosencrans.com/
https://student.societyforscience.org/article/rewritable-paper-prints-light-not-ink

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