Hydrophilic antimicrobial diamond coating
AssigneeUnited States Department of Energy
InventorsAnirudha V. Sumant, Shikai Deng
Life of this patent
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Abstract
A method for creating a hydrophilic antimicrobial diamond coating on a silicon or glass surface includes providing a silicon or glass surface, creating a second surface by seeding a plurality of nanodiamond particles on the silicon or glass surface by microwave plasma chemical vapor deposition (MPCVD), and forming a silver nitrate and hydroxylamine solution. A third surface may be created by seeding a plurality of silver nanoparticles onto the second surface by applying the silver nitrate and hydroxylamine solution onto the second surface and maintaining the silver nitrate and hydroxylamine solution on the second surface for a predetermined time. The third surface may then be exposed to an oxygen plasma treatment.
Claims23
A method for creating a hydrophilic antimicrobial diamond coating on a silicon or glass surface comprising the steps of:
- providing a silicon or glass surface;
- creating a second surface by seeding a plurality of nanodiamond particles on the silicon or glass surface by microwave plasma chemical vapor deposition (MPCVD);
- forming a silver nitrate and hydroxylamine solution by mixing a silver nitrate solution of approximately 0.03-0.08 mg/L with hydroxylamine;
- creating a third surface comprising:
- seeding a plurality of silver nanoparticles onto the second surface by applying the silver nitrate and hydroxylamine solution onto the second surface, and
- maintaining the silver nitrate and hydroxylamine solution on the second surface for a predetermined time;
- and
- exposing the third surface to an oxygen plasma treatment.
A method for creating a hydrophilic antimicrobial diamond coating on a silicon or glass surface comprising the steps of:
- providing a silicon or glass surface;
- creating a second surface by seeding a plurality of nanodiamond particles on the silicon or glass surface by microwave plasma chemical vapor deposition (MPCVD);
- creating a third surface by exposing the second surface to an oxygen plasma treatment;
- forming a silver nitrate and hydroxylamine solution by mixing a silver nitrate solution of approximately 0.03-0.08 mg/L with hydroxylamine;
- seeding a plurality of silver nanoparticles onto the third surface by applying the silver nitrate and hydroxylamine solution onto the third surface;
- and
- maintaining the silver nitrate and hydroxylamine solution on the third surface for a predetermined time.
A hydrophilic surface comprising:
- a glass surface;
- ultrananocrystalline diamond (UNCD) formed on the glass surface having a size of between approximately 2-5 nm;
- silver nanoparticles seeded on the UNCD;
- and
- oxygen plasma treatment on the UNCD or the silver nanoparticles.
Dependencies are inferred from the claim text.