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In situ Raman measurements of suspended individual single-walled carbon nanotubes under strain

Research output: Contribution to journalArticle

Original languageEnglish
Pages (from-to)2590-2595
Number of pages6
JournalNano Letters
Volume7
Issue number9
DOIs
Publication statusPublished - Sep 2007

Abstract

We present a technique for in situ Raman measurements of suspended individual single-walled carbon nanotubes (SWNTs) under strain. We observe a strong change in the radial breathing mode intensity with increasing strain as the nanotube moves out of (or into) resonance, and for strain greater than similar to 2%, there is a clear irreversible upshift in the G-mode frequencies accompanied by an increase in intensity of a broad peak at a position associated with the D mode. For lower strain, the G-mode peaks (A(1), E-1, and E-2) do not change significantly in position but change in relative intensity.

ID: 1508797