Here is a new defense against bacteria and other microbes which can be used on many different mediums. They use tiny molecular daggers which latch onto fibers and stab and destroy microbes. This could easily lead to killer clothes or bandages. You can read the details below.

"...When bacterial or fungal spores approach the fabric, their negatively charged fatty membranes are attracted to positive charges on the nitrogen-rich rings and to the fat-seeking blades. This forces the bug or spore onto the blade, which then penetrates the bacterial membrane.

Once inside, this charged end wreaks havoc and kills the spore by disrupting the delicate bonds inside. Each spore encounters a number of these molecular chains and eventually breaks up. "The bacteria effectively spill their guts," says Engel. ..."

New Scientist