Method to create hydrophilic antimicrobial diamond coating
AssigneeUnited States Department of Energy
InventorsAnirudha V. Sumant, Shikai Deng
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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 spraying 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.
Claims20
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) such that each of the plurality of nanodiamond particles has a grain size of approximately 2-5 nm;
- forming a silver nitrate and hydroxylamine solution by mixing a silver nitrate solution of approximately 0.03-0.08 mg/L with hydroxylamine at a predetermined temperature;
- creating a third surface comprising:
- seeding a plurality of silver nanoparticles onto the second surface by spraying 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 for 10-40s, at a power of approximately 40 W, a pressure of 100-200 mTorr, and an oxygen flow rate of 20-25 sccm.
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) such that each of the plurality of nanodiamond particles has a grain size of approximately 2-5 nm;
- creating a third surface by exposing the second surface to an oxygen plasma treatment for 10-40s, at a power of approximately 40 W, a pressure of 100-200 mTorr, and an oxygen flow rate of 20-25 sccm;
- forming a silver nitrate and hydroxylamine solution by mixing a silver nitrate solution of approximately 0.03-0.08 mg/L with hydroxylamine at a predetermined temperature;
- seeding a plurality of silver nanoparticles onto the third surface by spraying 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.
Dependencies are inferred from the claim text.