Fabrication of carbon nanoribbons from carbon nanotube arrays

US10646846B2 · kind B2 · utility

Assignees

• Northwestern University · US
• Massachusetts Institute of Technology · US

Inventors

• Yung Joon Jung · Lexington, US
• Hyun Young Jung · Yongin-si, KR
• Swastik Kar · Belmont, US
• Chi Won AHN · Daejeon, KR
• Mildred Dresselhaus · Arlington, US
• Paulo Antonio Trindade Araujo · Belo Horizonte, BR

Key dates

• Filing date: Sep 14, 2015
• Grant date: May 12, 2020
• Expiry date: Mar 21, 2037

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S977/932
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Inter-allotropic transformations of carbon are provided using moderate conditions including alternating voltage pulses and modest temperature elevation. By controlling the pulse magnitude, small-diameter single-walled carbon nanotubes are transformed into larger-diameter single-walled carbon nanotubes, multi-walled carbon nanotubes of different morphologies, and multi-layered graphene nanoribbons.