In other words, a very small amount of light would make it rapidly expand 1/2 mm or more-- (1/1000th candlepower)--or the amount of electrons that a standard (non-lcd) TV monitor shoots at one pixel?
Might there be any substance that does behave this way, maybe an organic thing?
By rapidly, I mean in less than 10 seconds, ideally virtually instantly.
If you don't know of one, doy you know of a person who might or otgher information resource?
This is for a school project, to make a computer screen "feelable" for a blind person. Thanks much.