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:
Sep. 24, 2013
Filed:
May. 07, 2007
Kirk J. Ziegler, Gainesville, FL (US);
Urs Rauwald, Bramen, DE;
Robert H. Hauge, Houston, TX (US);
Howard K. Schmidt, Cypress, TX (US);
W. Carter Kittrell, Houston, TX (US);
Zhenning Gu, Sugar Land, TX (US);
Irene Morin Marek, Houston, TX (US);
Kirk J. Ziegler, Gainesville, FL (US);
Urs Rauwald, Bramen, DE;
Robert H. Hauge, Houston, TX (US);
Howard K. Schmidt, Cypress, TX (US);
Richard E. Smalley, Houston, TX (US);
W. Carter Kittrell, Houston, TX (US);
Zhenning Gu, Sugar Land, TX (US);
William Marsh Rice University, Houston, TX (US);
Abstract
According to some embodiments, the present invention provides a method for attaining short carbon nanotubes utilizing electron beam irradiation, for example, of a carbon nanotube sample. The sample may be pretreated, for example by oxonation. The pretreatment may introduce defects to the sidewalls of the nanotubes. The method is shown to produces nanotubes with a distribution of lengths, with the majority of lengths shorter than 100 tun. Further, the median length of the nanotubes is between about 20 nm and about 100 nm.