PMID- 18020474 OWN - NLM STAT- MEDLINE DCOM- 20080312 LR - 20200930 IS - 1530-6984 (Print) IS - 1530-6984 (Linking) VI - 7 IP - 12 DP - 2007 Dec TI - Variation of radial elasticity in multiwalled carbon nanotubes. PG - 3891-4 AB - Correlations between the local diameter and local radial elastic modulus in multiwalled carbon nanotubes (MWNTs) were investigated via ultrasonic force microscopy. Spatial cross-correlation analysis showed that local radial modulus variations were inversely correlated with local diameter gradients ("bamboo" structures) in MWNTs grown via chemical vapor deposition (CVD). In contrast, uniform MWNTs grown via arc discharge exhibited no such correlation, indicating that reductions of elastic modulus previously reported for CVD-grown MWNTs originated from increased defect density associated with local increases in diameter. FAU - Muthaswami, Lata AU - Muthaswami L AD - College of Nanoscale Science and Engineering, University at Albany, Albany, NY 12203, USA. FAU - Zheng, Yuegui AU - Zheng Y FAU - Vajtai, Robert AU - Vajtai R FAU - Shehkawat, G AU - Shehkawat G FAU - Ajayan, Pulickel AU - Ajayan P FAU - Geer, Robert E AU - Geer RE LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, Non-P.H.S. DEP - 20071120 PL - United States TA - Nano Lett JT - Nano letters JID - 101088070 RN - 0 (Nanotubes, Carbon) SB - IM MH - Elasticity MH - Kinetics MH - Microscopy, Atomic Force MH - Microscopy, Electron MH - Models, Molecular MH - Nanotubes, Carbon/*chemistry MH - Ultrasonics EDAT- 2007/11/21 09:00 MHDA- 2008/03/13 09:00 CRDT- 2007/11/21 09:00 PHST- 2007/11/21 09:00 [pubmed] PHST- 2008/03/13 09:00 [medline] PHST- 2007/11/21 09:00 [entrez] AID - 10.1021/nl072002o [doi] PST - ppublish SO - Nano Lett. 2007 Dec;7(12):3891-4. doi: 10.1021/nl072002o. Epub 2007 Nov 20.