Electrified Graphene Turns Into A Bacterial Bug Zapper

提供:鈴木広大
2025年11月15日 (土) 15:14時点におけるFranceFalbo480 (トーク | 投稿記録)による版
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Graphene's lengthy list of achievements is slightly longer as we speak, as researchers from Rice University have used the fabric to make a bacterial bug zapper. A form of the material referred to as laser-induced graphene (LIG) has previously been found to be antibacterial, and now the workforce has discovered that these properties may be kicked up a notch by including just a few volts of electricity. The Rice group, headed up by Professor James Tour, first created LIG in 2014 by utilizing a laser beam to etch patterns right into a sheet of polyimide. That churns up the material into a porous graphene foam, UV bug zapper which has been found to be efficient at stopping microbes from constructing up on its surface. To further test LIG's bacteria-blasting talents, the researchers took a sheet of polyimide and Zap Zone used a laser to turn half of the surface into LIG. The fabric was then positioned in a solution stuffed with Pseudomonas aeruginosa micro organism, and a small cost was run via the LIG electrodes.



At 1.1 volts, Zap Zone the micro organism, which had been fluorescently tagged so the researchers may see them clearly, were interested in the LIG anode and moved towards it, like a bug zapper. At 1.5 volts, the bacteria that got here into contact with the LIG had been killed within 30 seconds, and when the juice was cranked up to 2.5 volts, it only took one second for Zone Defender them to disappear almost completely. And because LIG is already a good antifouling materials, the dead bugs do not accumulate on its surface. Next up, the researchers examined the material as a water-purification approach, leaving these LIG electrodes in a solution of micro organism and partially-treated wastewater. After 9 hours at 2.5 volts, the zapper had killed 99.9 % of the bugs, with out forming a lot of a biofilm on the floor. The scientists aren't sure exactly what's killing the micro organism, however the state of affairs they suspect sounds pretty ugly. First the sharp edges of the graphene pierce their cell membranes, then the charge electrocutes them, and any remaining survivors are then quickly poisoned by the hydrogen peroxide that's created in the process.



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