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  1. No Access

    Article

    Chemical interface dam** of surface plasmon excitation in metal nanoparticles: a study by persistent spectral hole burning

    As demonstrated recently, persistent spectral hole burning in the optical spectra of metal nanoparticles makes possible the determination of the ultrafast dephasing time T2 of surface plasmon excitation. Here, th...

    C. Hendrich, J. Bosbach, F. Stietz, F. Hubenthal, T. Vartanyan… in Applied Physics B (2003)

  2. No Access

    Article

    Application of metal nanoparticles in confocal laser scanning microscopy: improved resolution by optical field enhancement

    We describe experiments in which the field enhancement by metal nanoparticles that accompanies surface plasmon excitation has been exploited in confocal laser scanning microscopy. The objective was to make use...

    M. Alschinger, M. Maniak, F. Stietz, T. Vartanyan, F. Träger in Applied Physics B (2003)

  3. No Access

    Article

    Spectral hole burning in absorption profiles of metal nanoparticles prepared by laser assisted growth

    We have combined two novel methods, i.e. persistent spectral hole burning and laser assisted growth, to measure the decay time T2 of surface plasmon excitation in metal nanoparticles of different size at constant...

    J. Bosbach, C. Hendrich, T. Vartanyan… in The European Physical Journal D - Atomic, … (2001)

  4. No Access

    Article

    Theory of spectral hole burning for the study of ultrafast electron dynamics in metal nanoparticles

    In order to study the ultrafast relaxation dynamics of surface plasmon excitation in metal nanoparticles in the presence of inhomogeneous line broadening and investigate the influence of the reduced dimensions...

    T. Vartanyan, J. Bosbach, F. Stietz, F. Träger in Applied Physics B (2001)

  5. No Access

    Article

    Laser manipulation of the size and shape of supported nanoparticles

    Laser manipulation of the size and shape of metal nanoparticles prepared by self assembly of atoms on dielectric surfaces is discussed. The technique relies on the optical properties of the aggregates and the ...

    F. Stietz in Applied Physics A (2001)

  6. No Access

    Article

    Silicon nanoclusters formed through self-assembly on CaF2 substrates: morphology and optical properties

    We studied the influence of the size and shape of silicon nanoclusters on their optical response. For this purpose, clusters were prepared by deposition, and subsequent diffusion and nucleation, of Si atoms on...

    M. Andersson, A. Iline, F. Stietz, F. Träger in Applied Physics A (2000)

  7. No Access

    Article

    Laser-induced manipulation of the size and shape of small metal particles: Towards monodisperse clusters on surfaces

    A novel experimental technique is presented for post growth narrowing of the size distribution of metal nanoparticles on dielectric substrates. In order to demonstrate the potential of the method, oblate Ag cl...

    J. Bosbach, D. Martin, F. Stietz, T. Wenzel… in The European Physical Journal D - Atomic, … (1999)

  8. No Access

    Article

    Sha** nanoparticles and their optical spectra with photons

    An experimental method to tailor the shape and the optical absorption spectra of metallic nanoparticles is presented. It exploits the influence of laser irradiation on particle growth by self-assembly of atoms...

    T. Wenzel, J. Bosbach, A. Goldmann, F. Stietz, F. Träger in Applied Physics B (1999)

  9. No Access

    Article

    Formation of gold nanowires through self-assembly during scanning force microscopy

    Gold films with a nominal thickness of 5–40 monolayers were grown on dielectric substrates and imaged by scanning force microscopy (SFM). The films originally consisted of well-separated or densely packed clus...

    M. Andersson, A. Iline, F. Stietz, F. Träger in Applied Physics A (1999)

  10. No Access

    Chapter and Conference Paper

    Laser-induced manipulation of the size and shape of small metal particles: Towards monodisperse clusters on surfaces

    A novel experimental technique is presented for post growth narrowing of the size distribution of metal nanoparticles on dielectric substrates. In order to demonstrate the potential of the method, oblate Ag cl...

    J. Bosbach, D. Martin, F. Stietz, T. Wenzel, F. Träger in The European Physical Journal D (1999)

  11. No Access

    Article

    Adsorbate-induced transition between different mechanisms of laser-stimulated desorption

    were measured as a function of laser fluence, number of laser pulses, and oxygen exposure. If the laser fluence exceeds 10 mJ/cm2 desorption from clean particles occurs as a thermal reaction. Oxygen exposure as ...

    F. Stietz, T.A. Vartanyan, J. Viereck, T. Wenzel, F. Träger in Applied Physics A (1998)

  12. No Access

    Article

    Influence of molecular adsorbate layers on the optical spectra of small metal particles

    , N2O, CO2 or N2 on the particle surface. Depending on the molecules to which the clusters are exposed, different changes of the surface plasmon resonance in the spectra can be identified. The most essential expe...

    T. Brandt, W. Hoheisel, A. Iline, F. Stietz, F. Träger in Applied Physics B (1997)