Electrified Graphene becomes A Bacterial Bug Zapper > 자유게시판

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Graphene's long record of achievements is a little longer at this time, as researchers from Rice University have used the material to make a bacterial bug zapper. A form of the material referred to as laser-induced graphene (LIG) has previously been discovered to be antibacterial, and Zap Zone Defender Testimonial now the team has found that those properties will be kicked up a notch by adding a couple of volts of electricity. The Rice staff, Zap Zone Defender headed up by Professor James Tour, first created LIG in 2014 through the use of a laser beam to etch patterns into a sheet of polyimide. That churns up the material right into a porous graphene foam, which has been discovered to be effective at preventing microbes from constructing up on its floor. To further check LIG's micro organism-blasting talents, the researchers took a sheet of polyimide and Zap Zone Defender Testimonial used a laser to turn half of the surface into LIG. The fabric was then positioned in a solution full of Pseudomonas aeruginosa bacteria, and a small cost was run via the LIG electrodes.

At 1.1 volts, the micro organism, which had been fluorescently tagged so the researchers might see them clearly, have been attracted to the LIG anode and moved towards it, like a bug zapper. At 1.5 volts, the micro organism that came into contact with the LIG had been killed inside 30 seconds, and when the juice was cranked up to 2.5 volts, it only took one second for them to disappear virtually completely. And since LIG is already a very good antifouling material, the dead bugs do not accumulate on its floor. Next up, the researchers examined the material as a water-purification technique, leaving these LIG electrodes in a solution of bacteria and partially-handled wastewater. After nine hours at 2.5 volts, the zapper had killed 99.9 percent of the bugs, without forming much of a biofilm on the floor. The scientists aren't sure precisely what's killing the micro organism, but the state of affairs they suspect sounds pretty grotesque. First the sharp edges of the graphene pierce their cell membranes, then the cost electrocutes them, and Zap Zone Defender any remaining survivors are then quickly poisoned by the hydrogen peroxide that is created in the method.

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