Nice, 25.09.2006 Achim Hartschuh, Nano-Optics München 1 Near-field Optical Imaging of Carbon Nanotubes Achim Hartschuh, Huihong Qian Tobias Gokus, Department Chemie und Biochemie and CeNS, Universität München Neil Anderson, Lukas Novotny The Institute of Optics, University of Rochester, Rochester, NY
Near-field Optical Imaging of Carbon Nanotubes. Achim Hartschuh, Huihong Qian Tobias Gokus, Department Chemie und Biochemie and CeNS, Universität München Neil Anderson, Lukas Novotny The Institute of Optics, University of Rochester, Rochester, NY. - PowerPoint PPT Presentation
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Nice, 25.09.2006 Achim Hartschuh, Nano-Optics München 1
Near-field Optical Imaging of
Carbon Nanotubes
Achim Hartschuh, Huihong QianTobias Gokus,
Department Chemie und Biochemie and CeNS,
Universität München
Neil Anderson, Lukas NovotnyThe Institute of Optics, University of Rochester,
S.M. Stoeckle et al., Chem. Phys. Lett. 318, 131 (2000)N. Hayazawa et al., Chem. Phys. Lett. 335, 369 (2001) A. Hartschuh et al. Phys. Rev. Lett. 90, 95503 (2003)B. Pettinger et al., Phys. Rev. Lett. 92, 96101 (2004)N. Anderson et al., J. Am. Chem. Soc. 127, 2533 (2005)C.C. Neacsu et al., Phys. Rev. B 73, 193406 (2006)D. Methani, N. Lee, R. D. Hartschuh et al. J. Raman Spectrosc. 36, 1068 (2005).................................
Raman scattering
Two-photon excited fluorescenceE.J. Sánchez et al., Phys. Rev. Lett. 82, 4014 (1999)
H.G. Frey et al., Phys. Rev.Lett. 81, 5030 (2004)J. Farahani et al. Phys. Rev. Lett. 95, 017402 (2005)A. Hartschuh et al. Nano Lett. 5, 2310 (2005)
High-resolution optical microscopy of carbon High-resolution optical microscopy of carbon nanotubes using a sharp laser-illuminated metal tipnanotubes using a sharp laser-illuminated metal tip
• PL and Raman spectroscoy and imaging• Spatial resolution < 15 nm• Signal enhancement
ResultsResults• Resolved RBM variations (IMJ) on the nanoscale• Non-uniform emission energies that result from local
variations of dielectric environment• Strongly confined emission signals bound excitons?• PL-Quantum yield can be enhanced by metal tip
Nice, 25.09.2006 Achim Hartschuh, Nano-Optics München 32
Thanks to
PC Tuebingen:Alfred J. MeixnerMathias SteinerAntonio Virgilio Failla