Pathogenic bacteria can survive from a few hours to several days on a surface, especially if this surface is soft and / or wet, which can last for days or even weeks.
This represents a significant health risk, especially in hospital settings and in the implantation of prostheses or surgical implants.
This can be remedied using the technique developed at Purdue University in Indiana (USA) capable of killing bacteria on a metal surface by modifying the texture of its surface.
Through the action of a laser they modify the structure of the surface on a nanometric scale (millionth of a millimeter), creating patterns that make it rougher, causing bacteria to "break" and die.
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Researchers have found that their new technique applied to a copper surface makes it capable of killing even drug-resistant bacteria.
This antimicrobial surface applied to medical implants, would prevent the spread of possible infections and also bacterial resistance to antibiotics since it would not be necessary to use them.
It also makes the surface more hydrophilic, allowing bone cells to adhere more strongly, improving the integration of the implant with the bone.
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Unfortunately, this technique is useless against our new enemy, the Covid 19 coronavirus, or for any other virus due to the difference in size.
As you all know, compared to the size of viruses, bacteria are the size of an adult cow, in fact viruses infect bacteria.
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https://www.purdue.edu/newsroom/releases/2020/Q2/now-metal-surfaces-can-be-instant-bacteria-killers,-thanks-to-new-laser-treatment-technique.html