The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 20, 2021
Filed:
May. 03, 2019
University of South Carolina, Columbia, SC (US);
Morgan State University, Baltimore, MD (US);
Mvs Chandrashekhar, Columbia, SC (US);
Joshua Letton, Columbia, SC (US);
Travis Williams, West Columbia, SC (US);
Abdulganiyu Ajilore, Randallstown, MD (US);
Michael Spencer, Baltimore, MD (US);
University of South Carolina, Columbia, SC (US);
Morgan State University, Baltimore, MD (US);
Abstract
The localized formation of graphene and diamond like structures on the surface of boron carbide is obtained due to exposure to high intensity laser illumination. The graphitization involves water vapor interacting with the laser illuminated surface of boron carbide and leaving behind excess carbon. The process can be done on the micrometer scale, allowing for a wide range of electronic applications. Raman is a powerful and convenient technique to routinely characterize and distinguish the composition of Boron Carbide (BC), particularly since a wide variation in C content is possible in BC. Graphitization of 1-3 μm icosahedral BC powder is observed at ambient conditions under illumination by a 473 nm (2.62 eV) laser during micro-Raman measurements. The graphitization, with ˜12 nm grain size, is dependent on the illumination intensity. The process is attributed to the oxidation of BC to BOby water vapor in air, and subsequent evaporation, leaving behind excess carbon. The effectiveness of this process sheds light on amorphization pathways of BC, a critical component of resilient mechanical composites, and also enables a means to thermally produce graphitic contacts on single crystal BC for nanoelectronics.