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US Patent 11189774 High-temperature carbon-based superconductor: B-doped Q-carbon

Patent 11189774 was granted and assigned to North Carolina State University on November, 2021 by the United States Patent and Trademark Office.

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Patent
Patent
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Patent attributes

Patent Applicant
North Carolina State University
North Carolina State University
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Current Assignee
North Carolina State University
North Carolina State University
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Patent Jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
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Patent Number
111897740
Patent Inventor Names
Jagdish Narayan0
Date of Patent
November 30, 2021
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Patent Application Number
166146860
Date Filed
May 31, 2018
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Patent Primary Examiner
‌
Jae Lee
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Patent abstract

Certain embodiments involve processes or systems for creating various high-temperature superconductive structures or materials. For example, a method can involve depositing a first layer of boron and a second layer of un-doped amorphous carbon on a substrate. The un-doped amorphous carbon is ferromagnetic. The first layer of boron and the second layer of un-doped amorphous carbon are melted by a laser pulse to form a melted boron-doped amorphous carbon. The melted boron-doped amorphous carbon is quenched to create a quenched boron-doped amorphous carbon that is diamagnetic and superconducting. The quenched melted boron-doped amorphous carbon includes a mixture of sp3 bonded carbon atoms and sp2 bonded carbon atoms and a superconducting transition temperature of the quenched boron-doped amorphous carbon is much higher than diamond and increases based on a boron concentration. Undoped Q-carbon is ferromagnetic with Curie temperature above 500K.

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