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22 Nov 2006: since some deposition processes can introduce sp2 clusters. even in samples with high H content [13]. ... properties depend on the sp2 clustering. If in some conditions. sp2 clusters are produced independently of the H content, this.

13 Nov 2006: Figure 3a shows a HRTEM image of SWNTs nucleatedat 350C. We find closed SWNT tips, some of which present. ... a spherical catalyst particle, suggesting a tip growth model.Even though there is a large variation in their morphology,some SWNTs show a

28 Nov 2006: dispersion on the substrthe Au colloids do agglomerate, leading to a larger diamedistribution and to some worm-like features similar to F2b! ... especially under plasmconditions. The effect of the plasma is to preionize the source gaswell as to provide

13 Nov 2006: and some H-free amorphous carbons. Thespectra have been normalized to the G peak intensity. ... Note that PL has some-times been seen in some H-free carbons Fig.

28 Nov 2006: 2! This allows ‘‘doing Raman with IR.’’However, recently some groups contested t. ... The lines are guides to the eye. 15530. ntin. c-. and visible Raman spectra still leads some to consider tequivalence, as for Ref.