Berlin 2005 – wissenschaftliches Programm

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O: Oberflächenphysik

O 36: Postersitzung (Elektronische Struktur, Grenzfl
äche fest-flüssig, Halbleiteroberfl
ächen und -grenzfl
ächen, Nanostrukturen, Oberfl
ächenreaktionen, Teilchen und Cluster, Struktur und Dynamik reiner Oberfl
ächen)

O 36.46: Poster

Montag, 7. März 2005, 15:00–18:00, Poster TU F

Evaluation of the Elasticity on Single-Walled Nanotubes on Graphite(0001) with Dynamic Force Spectroscopy — •Timo Behnke, Makoto Ashino, and Roland Wiesendanger — Institute of Applied Physics, University of Hamburg,

Due to their unique mechanical and electronic properties, carbon nanotubes are one of the promising canditates for future functional nanostructures. We study the elasto-mechancial properties of single-walled carbon nanotubes (SWNT) at the nanoscale using dynamic force microscopy and spectroscopy with frequency modulation technique. Site specific frequency shift data were recorded by changing the tip-sample distance at different positions on SWNTs and Graphite, respectivly, and converted into a force versus distance relationship. The results obtained in the attractive and repulsive regime are compared with respect to theoretical estimations. Possible elastic deformation of SWNTs under radial compression will be discussed.