Carbon Nanotube Manufacturing Technology Wins Nano 50 Award

NASA Goddard Space Flight Center’s method for manufacturing high-quality carbon nanotubes (CNT) has been named a winner in the third annual Nanotech Briefs Nano 50 awards in the Technology category.

This award was be celebrated at the Nano 50 awards dinner November 14 at the NASA Tech Briefs National Nano Engineering Conference (NNEC 2007) in Boston, Mass.

Judged by a panel of nanotechnology experts, the Nano 50 awards recognize the top 50 technologies, products, and innovators that have significantly impacted (or are expected to impact) the state of the art in nanotechnology. The winners of the Nano 50 awards are the "best of the best"—the innovative people and designs that will move nanotechnology to key mainstream markets.

"My deepest gratitude goes out to the panel of experts at Nanotech Briefs magazine, as well as Goddard’s Innovative Partnership Program (IPP) Office, for recognizing this technology and its future impact," expressed retired Goddard innovator, Jeannette Benavides, who is presenting her award-winning technology at NNEC 2007.

Until recently, CNT use has been limited due to the complex, dangerous, and expensive methods for their production. Benavides’s technology represents a simpler, safer, and much less expensive manufacturing method.

The key innovation in the process patented by NASA Goddard is its ability to produce bundles of CNTs without using a metal catalyst. Most single-walled CNT (SWCNT) manufacturing methods—chemical vapour deposition, laser ablation, microwave, and high-pressure carbon monoxide conversion—use a metal catalyst to encourage carbon to grow in nanotube form without capping. Because Goddard’s process does not use a metal catalyst, no metal particles need to be removed from the final product, yielding a significantly better product in terms of quality and purity at a dramatically lower cost.

Given their level of purity, the high-quality SWCNTs made using Benavides’s discovery are particularly well suited for medical applications, where metal particles cannot be present, as well as applications where high strength and electrical conductivity are desired, since high purity enhances these characteristics. Yet, they can be used in other applications as well. For example, SWCNTs made with this process could be integrated into a polymer to result in a fibreglass-type material that is as strong as steel but with one-sixth the weight.

The commercial impact of this discovery is clearly demonstrated by the market’s significant interest in the technology. Goddard has licensed the technology to Idaho Space Materials, Nanotailor, and E-City NanoTechnologies, all of which were founded specifically to manufacture SWCNTs using Goddard’s technology. Goddard also has licensed the technology to American GFM.

"I'm very excited to see that the IPP Office’s licensing out of my technology is making CNTs more readily available, particularly for academic and other research programs. The fact that they now have access to lower cost CNTs bodes well for the future of nanotechnology," said Benavides.

"Dr. Benavides not only worked hard to develop the technology, but she also was very involved in the technology transfer process," explained the IPP Office’s Darryl Mitchell, who has led the licensing efforts for NASA Goddard. "Her dedication has been essential to the success of the licensing agreements."

Publication Date: 27/11/2007

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