bio.display

We’ll have to kill the bacteria for sterilization purposes after it has expressed the imagery we need, because of regulations regarding genetically modified organisms. A straightforward solution seems to be to use UV light to do that.

Traditionally, UV light of 185nm and 265nm are used for such purposes, which are the peak wavelengths of DNA absorbing UV light (and getting damaged in the process). The idea is that as the DNA of the bacteria is damaged, it is unable to reproduce anymore, and will die as well eventually.

But there are also some results showing that longer wavelength 365nm (and thus simpler, cheaper) UV light can be used for sterilization as well. These lights would be easier to use as they are made of LEDs.

I guess we’ll have to investigate…