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US 11,076,599 B2Granted
Antimicrobial coating comprising chalcogenide nano-particles capped by chitosan
AssigneeBoard of Regents, The University of Texas System
InventorsKelly L. Nash, Grégory Guisbiers, Humberto Herman Lara Villegas
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Abstract
Disclosed herein are methods of making pure chalcogenide (e.g., selenium, tellurium, or selenium/tellurium) nanoparticles by irradiating chalcogenide pellets by nano-second laser ablation using chitosan as a capping agent to form chitosan chalcogenide nanoparticles (CS-CgNPs). CS-CgNPs and methods of using such particles are also disclosed herein, such as antimicrobials and antimicrobial coatings effective against biofilms.
Claims8
A method for producing an antimicrobial coating on a surface, the method comprising:
- mixing a chitosan capped chalcogenide nanoparticle with an application material to form a mixture;
- applying the mixture on the surface forming a surface having a chitosan capped chalcogenide nanoparticles on or in the surface that inhibit biofilm formation of bacteria and fungus, wherein the chitosan capped chalcogenide nanoparticle is present in the mixture in an amount from about 0.0001 wt. % to about 10 wt. %.
Dependencies are inferred from the claim text.