Another thing from Sci Am, or from where I could get it by searching on the researcher.

https://devicematerialscommunity.nature.com/users/262814-andrew-gibbons/posts/50227-structural-colour-using-organized-microfibrillation-in-glassy-polymer-films

This was very interesting and the scale is mind blowing.

I’ve done lots of photopolymer printing. But always with ink. I think I like the inkiness. But this is interesting. And I can see it being pushed into original places.

this is pretty neat… I mean moll says that plastics disappear, but nothing I have read ever backs that up.. just that they keep micro-ing until we are eating them in a secondary sense.. so as much as we can reuse, reinvent and recycle plastics I think is a great thing

buffy said:

Another thing from Sci Am, or from where I could get it by searching on the researcher.

https://devicematerialscommunity.nature.com/users/262814-andrew-gibbons/posts/50227-structural-colour-using-organized-microfibrillation-in-glassy-polymer-films

This was very interesting and the scale is mind blowing.

> we have instead embraced the formation of cracks to make microstructures that have large scale effects, such as color. Our approach uses the interference of light (standing waves) to selectively crosslink a polymer film. In doing so we imprint regions in the film that will crack when exposed to a solvent, resulting in a layered nanoporous film. Not only is the film nanoporous, but light interacts with the periodic layers to strongly reflect specific wavelengths. We first encountered this phenomenon in polystyrene type materials that were irradiated with ultra-violet light.

That’s fascinating.

They need to call it by its true name, iridescence.

It’s sort of similar to the colours on a cd, but produced in a different way. There are already irridescent patches on money and similar, but this method would be much harder to copy/fake.