Abstract
We report the direct measurements on the bulk morphology of vertically aligned multiwalled carbon nanotube (CNT) arrays using small angle neutron scattering (SANS). SANS measurements at different heights of CNT arrays corresponding to different stages of the growth reveal increasing alignment order along the thickness and two distinctly different CNT morphologies. The observations suggest that the evolution of the macroscopic CNT morphologies be driven by competing collective growth and spatial constraints.
| Original language | English |
|---|---|
| Article number | 213111 |
| Journal | Applied Physics Letters |
| Volume | 88 |
| Issue number | 21 |
| DOIs | |
| State | Published - May 21 2006 |
Funding
One of the authors (H.W.) acknowledges the NSF Career Award DMR-0348895 and the support of the National Institute of Standards and Technology in providing the neutron research facilities used in this work. Another author (G.E.) is supported by the Oak Ridge National Laboratory, managed by UT-Battelle, LLC, for the U.S. Department of Energy under Contract No. DE-AC05-00OR22725 and the Laboratory-Directed Research and Development Program at ORNL. Part of this research was conducted at the Center for Nanophase Materials Sciences, which is sponsored at Oak Ridge National Laboratory by the Division of Scientific User Facilities, U.S. Department of Energy.
| Funders | Funder number |
|---|---|
| Laboratory-Directed Research and Development Program | |
| National Science Foundation | DMR-0348895 |
| U.S. Department of Energy | DE-AC05-00OR22725 |
| National Institute of Standards and Technology | |
| Basic Energy Sciences | |
| Oak Ridge National Laboratory |