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@BOOK{Spudat:136235,
      author       = {Spudat, Christian},
      title        = {{C}orrelation between {R}aman spectroscopy and electron
                      microscopy on individual carbon nanotubes and peapods},
      volume       = {11},
      school       = {Universität Duisburg},
      type         = {Dr.},
      address      = {Forschungszentrum Jülich GmbH Zentralbibliothek, Verlag},
      reportid     = {PreJuSER-136235},
      isbn         = {978-3-89336-648-4},
      series       = {Schriften des Forschungszentrums Jülich. Reihe Information
                      / information},
      pages        = {XIV, 125 S.},
      year         = {2010},
      note         = {Record converted from JUWEL: 18.07.2013; Universität
                      Duisburg, Diss., 2010},
      abstract     = {In this thesis, we investigate the possibility of filling
                      carbon nanotubes (CNTs) grown by chemical vapor deposition
                      (CVD) with guest molecules directly on substrates. This
                      requires the characterization of CNTs after synthesis. It is
                      shown by high-resolution TEM and Raman spectroscopy that the
                      diameter distribution and number of layers of as-grown CNTs
                      depends on the growth temperature T$_{CVD}$. HRTEM
                      measurements are seen to induce defects, even when performed
                      at electron energies as low as 80 keV. Raman spectroscopy,
                      on the other hand, is non-destructive for individual CNTs at
                      small laser intensities (P < 0.5mW). This fact motivated us
                      to attempt a correlation of HRTEM and Raman spectroscopy,
                      which allowed us to prove the radial phonon-coupling for an
                      individual multi-walled CNT and a bundle of single-walled
                      CNTs for the first time experimentally and to confirm our
                      results by a simple numeric model. Furthermore, it could be
                      shown that the width of the resonance profiles of radial
                      Raman modes allows one to determine whether the investigated
                      CNT is an individual single-walled CNT, located within a
                      bundle or a layer of a multi-walled CNT. This makes a
                      determination of the inter-molecular structure of CNTs
                      possible without damaging the CNTs by TEM imaging. Moreover,
                      resonant Raman spectroscopy provides important information
                      about the electronic structure of the investigated CNTs,
                      which is essential for interpreting future quantum transport
                      measurements and permits the determination of the atomic
                      structure of individual CNTs. A second part of this thesis
                      deals with the synthesis of peapods, CNTs filled with
                      fullerene molecules such as C60. We present a detailed
                      characterization of individual CNTs after each step of the
                      peapod synthesis, focusing especially on the opening of the
                      as-grown CNTs. A UHV-chamber was built up to avoid reactions
                      between the opened CNTs and the atmosphere, allowing for the
                      in situ removal of excess fullerene molecules from the CNTs.
                      Using this novel method, we obtain clean peapods in
                      different yields and with different numbers of layers
                      directly on the substrate, which opens the way for future
                      quantum transport measurements of these systems.},
      cin          = {IFF / IFF-9},
      ddc          = {500},
      cid          = {I:(DE-Juel1)VDB241 / I:(DE-Juel1)VDB789},
      shelfmark    = {FNX - Carbon, carbon materials / FNPE - Nanostructured
                      materials / FNX - Kohlenstoff, Kohlenstoffmaterialien},
      typ          = {PUB:(DE-HGF)3},
      url          = {https://juser.fz-juelich.de/record/136235},
}