A MODIFIED SURFACE CAPABLE OF HAVING BACTERIOSTATIC AND BACTERICIDE ACTIVITY, THE METHOD FOR OBTAINING IT AND USE THEREOF

摘要

The present invention relates to a modified surface capable of having bacteriostatic and bactericidal activity when it is light irradiated, thus converting the surface of the substrate into a bacteriostatic and a bactericidal surface as many times as it is desired, and for a long time. According to the invention, the modified surface upon light irradiation avoids the attachment of a microorganism to this surface, inhibits the formation of a biofilm on this surface and destroys an already formed biofilm on this surface. These effects can be achieved as many times as it is desired, and for indefinite time.

主权项

1. A modified surface capable of having bacteriostatic, bactericidal and antimicrobial activity, wherein said modified surface comprises:
a substrate configured to anchor thermal nanoparticles supporting local surface plasmon resonance; and, thermal nanoparticles supporting local surface plasmon resonance bonded to said substrate forming a thermal coating, wherein the thermal coating has a density of thermal nanoparticles per μm2 of the substrate's surface ranging from 10 to 1000, the thermal nanoparticles being able to increase their temperature by light irradiation in a wavelength range that matches with the wavelength of the local surface plasmon resonance of said nanoparticles, whereby said thermal coating rises its temperature, allowing the temperature rise of said thermal coating to avoid the attachment of a microorganism to this surface, to inhibit the formation of a biofilm on this surface and/or to destroy an already formed biofilm on this surface.