Preferred orientation in fibers of HiPco single wall carbon nanotubes from diffuse x-ray scattering

Neat Fibers of HiPco single wall carbon nanotubes extruded from strong acid suspensions exhibit preferred orientation along fiber axes. We characterize the extrusion-induced alignment using x-ray fiber diagrams and polarized Raman scattering, using a model which allows for some fraction of the sample to remain completely unaligned. We show that both x-ray and Raman data are required for a complete texture analysis of SWNT fibers. Comments Copyright Materials Research Society. Reprinted from MRS Proceedings Volume 740. 2002 Fall Meeting Symposium I Nanomaterials for Structural Applications Publisher URL:http://www.mrs.org/members/proceedings/fall2002/i/I12_21.pdf Author(s) Wei Zhou, Karen I. Winey, John E. Fischer, Sivarajan Ramesh, Rajesh K. Saini, Lars M. Ericson, Virginia A. Davis, M. Pasquali, Robert H. Hauge, and Richard E. Smalley This conference paper is available at ScholarlyCommons: http://repository.upenn.edu/mse_papers/23 PREFERRED ORIENTATION IN FIBERS OF HIPCO SINGLE WALL CARBON NANOTUBES FROM DIFFUSE X-RAY SCATTERING W. Zhou, K. I. Winey, J. E. Fischer Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia PA; S. Ramesh, R. K. Saini, L. M. Ericson, V. A. Davis, M. Pasquali, R. H. Hauge, R. E. Smalley Center for Nanoscale Science and Technology, Rice University, Houston TX.