期刊
NATURE NANOTECHNOLOGY
卷 4, 期 1, 页码 64-70出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/NNANO.2008.364
关键词
-
资金
- US Army Telemedicine and Advanced Technology Research Center [DAMD17-05-1-0381]
- National Science Foundation [DMR-0520513, EEC-0647560, DMR-0706067]
- Natural Sciences and Engineering Research Council of Canada Postgraduate Scholarship
- Alfred P. Sloan Research Fellowship
- NSF-NSEC
- NSF-MRSEC
- Keck Foundation
- State of Illinois and Northwestern University
Carbon nanotubes consist of one or more concentric graphene cylinders and are under investigation for a variety of applications that make use of their excellent thermal, mechanical, electronic and optical properties. Double-wall nanotubes are ideal systems for studying the interwall interactions influencing the properties of nanotubes with two or more walls. However, current techniques to synthesize double-wall nanotubes produce unwanted single- and multiwall nanotubes. Here, we show how density gradient ultracentrifugation can be used to separate double-wall nanotubes from mixtures of single- and multiwall nanotubes through differences in their buoyant density. This technique results in samples that are highly enriched in either single- or double-wall nanotubes of similar outer wall diameter, with the double-wall nanotubes being, on average, similar to 44% longer than the single-wall nanotubes. The longer average length of the double-wall nanotubes provides distinct advantages when they are used in transparent conductors.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据