US 11,884,544 B2
Covalent reinforcement of carbon nanotube assemblies
Xavier N. Lepro Chavez, Dublin, CA (US); Chantel M. Aracne-Ruddle, Livermore, CA (US); Leonardus Bimo Bayu Aji, Livermore, CA (US); Sergei O. Kucheyev, Oakland, CA (US); and Michael Stadermann, Pleasanton, CA (US)
Assigned to Lawrence Livermore National Security, LLC, Livermore, CA (US)
Filed by Lawrence Livermore National Security, LLC, Livermore, CA (US)
Filed on Jun. 20, 2022, as Appl. No. 17/844,492.
Application 17/844,492 is a division of application No. 15/867,576, filed on Jan. 10, 2018, granted, now 11,479,467.
Prior Publication US 2023/0101816 A1, Mar. 30, 2023
Int. Cl. B32B 9/00 (2006.01); C01B 32/168 (2017.01); B01J 19/08 (2006.01); C01B 32/16 (2017.01); C01B 32/164 (2017.01); B82Y 40/00 (2011.01); B82Y 30/00 (2011.01)
CPC C01B 32/168 (2017.08) [B01J 19/084 (2013.01); C01B 32/16 (2017.08); C01B 32/164 (2017.08); B01J 2219/0879 (2013.01); B82Y 30/00 (2013.01); B82Y 40/00 (2013.01); C01B 2202/08 (2013.01); Y10S 977/748 (2013.01); Y10S 977/843 (2013.01); Y10S 977/847 (2013.01); Y10T 428/30 (2015.01)] 13 Claims
OG exemplary drawing
 
1. A method of fabricating a covalently reinforced carbon nanotube (CNT) assembly, comprising:
producing a CNT assembly by pulling entangled CNTs from a CNT array fabricated on a substrate, the CNT assembly including a plurality of CNTs that are aligned; and
inducing a high stiffness in the CNT assembly by applying a high energy ion irradiation to the CNT assembly such that an intensity of a D band of Raman spectroscopy of the CNT assembly is greater than an intensity of a G band of the Raman spectroscopy of the CNT assembly, wherein an irradiation cross-section of the high energy ion irradiation is selected such that the ions of the high energy ion irradiation pass through an overall thickness of the CNT assembly to generate defects uniformly without inducing ion implantation.