Enrichment of armchair carbon nanotubes via density gradient ultracentrifugation: Raman spectroscopy evidence.
نویسندگان
چکیده
We have used resonant Raman scattering spectroscopy to fully analyze the relative abundances of different (n,m) species in single-walled carbon nanotube samples that are metallically enriched by density gradient ultracentrifugation. Strikingly, the data clearly show that our density gradient ultracentrifugation process enriches the metallic fractions in armchair and near-armchair species. We observe that armchair carbon nanotubes constitute more than 50% of each (2n + m) family.
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ورودعنوان ژورنال:
- ACS nano
دوره 4 4 شماره
صفحات -
تاریخ انتشار 2010