Full Content is available to subscribers

Subscribe/Learn More  >

Optimizing the Purification of Biofunctionalized Carbon Nanotubes

[+] Author Affiliations
M. S. Arnold, S. I. Stupp, M. C. Hersam

Northwestern University, Evanston, IL

Paper No. MSEC2006-21046, pp. 373-380; 8 pages
  • ASME 2006 International Manufacturing Science and Engineering Conference
  • Manufacturing Science and Engineering, Parts A and B
  • Ypsilanti, Michigan, USA, October 8–11, 2006
  • Conference Sponsors: Manufacturing Engineering Division
  • ISBN: 0-7918-4762-4 | eISBN: 0-7918-3786-8
  • Copyright © 2006 by ASME


The utilization of single-walled carbon nanotubes (SWNTs) in large quantities for molecular electronics, optoelectronics, biosensors, and medical applications will require SWNTs of the same physical structure, electronic type, and band gap. Since current methods of synthesis produce mixtures of nanotubes with different physical structures and electrical properties, the development of strategies for the postproduction separation of these one-dimensional materials is highly desirable. In this work, we demonstrate a scalable method for separating SWNTs by diameter using density gradient centrifugation. Of particular interest for biosensing applications is the bulk purification of SWNTs through centrifugation of DNA wrapped SWNTs in aqueous density gradients. The dependence of this process on DNA sequence and length has been determined. In addition, strategies for decreasing the purification time are outlined. Overall, this nondestructive and scalable separation strategy is expected to impact a variety of applications for SWNTs where monodisperse structure and properties are essential.

Copyright © 2006 by ASME



Interactive Graphics


Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In