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:
Mar. 28, 2023
Filed:
Dec. 22, 2020
Applicant:
Tsinghua University, Beijing, CN;
Inventors:
Assignee:
Tsinghua University, Beijing, CN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01B 32/158 (2017.01); C01B 32/162 (2017.01);
U.S. Cl.
CPC ...
C01B 32/158 (2017.08); C01B 32/162 (2017.08); C01B 2202/04 (2013.01); C01B 2202/06 (2013.01); C01B 2202/30 (2013.01); C01B 2202/34 (2013.01); C01B 2202/36 (2013.01);
Abstract
This disclosure relates to the technical field of carbon nanotubes, provides an ultra-long chiral carbon nanotube and a method for preparing the same. The ultra-long chiral carbon nanotube has a diameter of about 1.5 nm to 5.5 nm and has a length of about 100 mm to 650 mm, the ultra-long chiral carbon nanotube includes a double-walled carbon nanotube and a triple-walled carbon nanotube, and each layer of the ultra-long chiral carbon nanotube is semiconducting and has a helix angle greater than 10°.