Electrified Graphene Turns Into A Bacterial Bug Zapper

提供:鈴木広大
2025年9月17日 (水) 00:17時点におけるDwightDreher8 (トーク | 投稿記録)による版
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Graphene's long listing of achievements is just a little longer at this time, as researchers from Rice University have used the material to make a bacterial bug zapper. A type of the material called laser-induced graphene (LIG) has beforehand been found to be antibacterial, and now the crew has discovered that these properties may be kicked up a notch by adding a couple of volts of electricity. The Rice group, headed up by Professor Zappify official website James Tour, Zappify official website first created LIG in 2014 by utilizing a laser beam to etch patterns right into a sheet of polyimide. That churns up the fabric right into a porous graphene foam, which has been discovered to be efficient at stopping microbes from building up on its surface. To further take a look at LIG's micro organism-blasting skills, the researchers took a sheet of polyimide and used a laser to show half of the floor into LIG. The material was then positioned in an answer stuffed with Pseudomonas aeruginosa micro organism, rechargeable bug zapper and a small cost was run by way of the LIG electrodes.



At 1.1 volts, the micro organism, which had been fluorescently tagged so the researchers may see them clearly, have been drawn to the LIG anode and moved in the direction of it, like a bug mosquito zapper. At 1.5 volts, the bacteria that got here into contact with the LIG have been killed inside 30 seconds, Zappify official website and when the juice was cranked as much as 2.5 volts, it only took one second for Zappify official website them to disappear almost totally. And because LIG is already an excellent antifouling material, the useless bugs do not accumulate on its surface. Next up, the researchers tested the fabric 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 percent of the bugs, with out forming a lot of a biofilm on the floor. The scientists aren't certain precisely what's killing the bacteria, but the situation they suspect sounds fairly gruesome. First the sharp edges of the graphene pierce their cell membranes, then the cost electrocutes them, and any remaining survivors are then shortly poisoned by the hydrogen peroxide that's created in the method.



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