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AssigneeInternational Business Machines Corporation
InventorsAli Afzali-Ardakani, Bhupesh Chandra, George S. Tulevski
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A process comprises combining a Ce (IV) salt with a carbon material comprising CNT or graphene wherein the Ce (IV) salt is selected from a Ce (IV) ammonium salt of a nitrogen oxide acid and is dissolved in a solvent comprising water. The process is conducted under conditions to substantially oxidize the carbon material to produce an oxidized material that is substantially non-conducting. After the oxidation, the Ce (IV) is substantially removed from the oxidized material. This produces a product made by the process. An article of manufacture comprises the product on a substrate. The oxidized material can be formed as a pattern on the substrate. In another embodiment the substrate comprises an electronic device with the oxidized material patterning non-conductive areas separate from conductive areas of the non-oxidized carbon material, where the conductive areas are operatively associated with the device.
A process comprising applying a Ce (IV) salt dissolved in a solvent comprising water to a carbon material comprising CNT or graphene wherein said Ce (IV) salt is selected from a Ce (IV) cationic salt of a nitrogen oxide acid, Ce (IV) salt of a lower alkyl organo sulfur oxide acid, or Ce (IV) salt of a lower alkane organo sulfur oxide acid where said process is conducted for a period of time and at a temperature and solution concentration sufficient to substantially oxidize said carbon material to produce an oxidized material that is substantially non-conducting, and after said oxidation said Ce (IV) is substantially removed from said oxidized material.
A process comprising applying Ce (IV) ammonium sulfate dissolved in a solvent comprising water to a carbon material comprising CNT or graphene where the process is conducted for a period of time and at a temperature and solution concentration sufficient to substantially oxidize said carbon material to produce an oxidized material that is substantially non-conducting, and after said oxidation said Ce (IV) is substantially removed from said oxidized material.
Dependencies are inferred from the claim text.