Berlin 2008 – scientific programme
Parts | Days | Selection | Search | Downloads | Help
DS: Fachverband Dünne Schichten
DS 18: Poster: Towards Molecular Spintronics, Organic Thin Films, Optical Layers, Vibrational Spectroscopy, Tayloring organic interfaces
DS 18.37: Poster
Tuesday, February 26, 2008, 14:30–19:30, Poster A
Tip-Enhanced Optical Microscopy of Single-Walled Carbon Nanotubes — •Carsten Georgi1, Huihong Qian1, Neil Anderson2, Lukas Novotny2, and Achim Hartschuh1 — 1Department Chemie und Biochemie & CeNS, Ludwig-Maximilians-Universität München, Germany — 2University of Rochester, The Institute of Optics, Rochester, New York 14627, USA
Optical Microscopy with nanoscale spatial resolution is an essential technique for the detection and characterization of individual nanoobjects and nanostructured materials. We use the field enhancement in the proximity of a laser-illuminated sharp metal tip to locally excite and probe the optical response of nanoscale systems. In particular, we image the vibrational and electronic properties of single-walled carbon nanotubes with a spatial resolution of down to 10nm, limited only by the tip diameter [1,2]. Local perturbations along an individual nanotube, as well as energetic coupling between different nanotubes can thereby be directly observed, revealing the interaction of phonons and excitons with the nanotube structure and its environment.
[1] A. Hartschuh et al., Nano Lett. 5, 2310 (2005)
[2] N. Anderson et al., Nano Lett. 7, 577 (2007)