Systems and methods for low pressure diamond growth without plasma including seeding growth
AssigneesThe Texas A&M University System, King Abdulaziz City for Science and Technology, Ulm University, Max-Planck Institute for Polymer Research
InventorsPhilip R. Hemmer, Masfer Hassan A. Alkahtani, Fedor Jelezko, Todd Zapata, Tanja Weil, Isaac V. Rampersaud
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Abstract
A method for low-pressure diamond growth includes heating a composition comprising a diamond growth seed and a source of reactive carbon to a temperature below 800° C., wherein the heating takes place under low pressure. Responsive to the heating, growing diamonds from the composition.
Claims21
1-43. (canceled)
A method for low-pressure diamond growth, the method comprising:
- heating a composition comprising a source of reactive carbon to a temperature below 800° C. where diamond does not spontaneously convert to graphite, wherein the heating takes place at a pressure below 1 GPa where diamond is not the most stable form of carbon;
- and
- responsive to the heating, growing diamonds from the composition,
- wherein the composition comprises a catalyst that enhances a growth rate or a nucleation efficiency of the diamonds;
- and
- wherein the catalyst comprises a sheet or a powder of nanoporous material that binds growth material by physisorption or chemisorption.
A method for low-pressure diamond growth, the method comprising:
- heating a composition comprising a source of reactive carbon to a temperature below 800° C. where diamond does not spontaneously convert to graphite, wherein the heating takes place at a pressure below 1 GPa where diamond is not the most stable form of carbon;
- responsive to the heating, growing diamonds from the composition,
- wherein the composition comprises a seed crystal that serves as a diamond growth template or as a precursor for a fluorescent color center;
- and
- wherein the seed crystal is a hydrogen-terminated diamond surface or a hydrogen-terminated diamond surface that is functionalized with atomic or molecular groups that serve as precursors for fluorescent color centers, or any combination thereof.
A method for low-pressure diamond growth, the method comprising:
- heating a composition comprising a source of reactive carbon to a temperature below 800° C. where diamond does not spontaneously convert to graphite, wherein the heating takes place at a pressure below 1 GPa where diamond is not the most stable form of carbon;
- and
- responsive to the heating, growing diamonds from the composition,
- wherein the composition comprises a catalyst that enhances a growth rate or a nucleation efficiency of the diamonds;
- and
- wherein the catalyst comprises an amorphous carbon film, graphene flakes, or graphite particles, or any combination thereof.
Dependencies are inferred from the claim text.