@article{PietschRochonNatansohn2000,
  author    = {Pietsch, Ullrich and Rochon, Paul and Natansohn, Almeria},
  title     = {Formation of a buried lateral density grating in azopenzene polymer films},
  year      = {2000},
  language  = {en}
}
@article{GeueSchultzGrenzeretal.2000,
  author    = {Geue, Thomas and Schultz, Michael and Grenzer, J{\"o}rg and Natansohn, Almeria and Rochon, Paul},
  title     = {X-ray investigations of the molecular mobility with polymer surface gratings},
  year      = {2000},
  language  = {en}
}
@article{HennebergGeueSaphiannikovaetal.2001,
  author    = {Henneberg, Oliver and Geue, Thomas and Saphiannikova, Marina and Pietsch, Ullrich and Rochon, Paul and Natansohn, Almeria},
  title     = {Formation and dynamics of polymer surface relief gratings},
  issn      = {0378-5963},
  year      = {2001},
  language  = {en}
}
@article{HennebergChiGeueetal.2001,
  author    = {Henneberg, Oliver and Chi, Li Feng and Geue, Thomas and Saphiannikova, Marina and Pietsch, Ullrich and Rochon, Paul and Natansohn, Almeria},
  title     = {Atomic force microscopy inspection of the early state of formation of polymer surface relief grating},
  year      = {2001},
  language  = {en}
}
@article{GeueHennebergGrenzeretal.2002,
  author    = {Geue, Thomas and Henneberg, Oliver and Grenzer, J{\"o}rg and Pietsch, Ullrich and Natansohn, Almeria and Rochon, Paul and Finkelstein, Kenneth D.},
  title     = {Formation of a buried density grating on thermal erasure of azobenzene polymer surface gratings},
  issn      = {0927-7757},
  year      = {2002},
  language  = {en}
}
@article{GeueSaphiannikovaHennebergetal.2002,
  author    = {Geue, Thomas and Saphiannikova, Marina and Henneberg, Oliver and Pietsch, Ullrich and Rochon, Paul and Natansohn, Almeria},
  title     = {Formation mechanism and dynamics in polymer surface gratings},
  year      = {2002},
  language  = {en}
}
@article{HennebergGeueSaphiannikovaetal.2002,
  author    = {Henneberg, Oliver and Geue, Thomas and Saphiannikova, Marina and Natansohn, Almeria and Rochon, Paul and Finkelstein, Kenneth D.},
  title     = {Investigation of material flow on inscribing a polymer surface grating probing X-ray and VIS light scattering},
  issn      = {0927-7757},
  year      = {2002},
  language  = {en}
}
@article{HennebergGeueSaphiannikovaetal.2003,
  author    = {Henneberg, Oliver and Geue, Thomas and Saphiannikova, Marina and Pietsch, Ullrich and Rochon, Paul},
  title     = {X-ray and VIS light scattering from light-induced polymer gratings},
  doi       = {10.1088/0022-3727/36/10A/350},
  year      = {2003},
  language  = {en}
}
@article{HennebergRochonPanzneretal.2004,
  author    = {Henneberg, Oliver and Rochon, Paul and Panzner, Tobias and Finkelstein, Kenneth D. and Geue, Thomas and Saphiannikova, Marina and Pietsch, Ullrich},
  title     = {In-situ Investigation of Surface Relief Grating Formation in Photosensitive Polymers},
  year      = {2004},
  language  = {en}
}
@article{SaphiannikovaHennebergGeneetal.2004,
  author    = {Saphiannikova, Marina and Henneberg, Oliver and Gene, T. M. and Pietsch, Ullrich and Rochon, Paul},
  title     = {Nonlinear effects during inscription of azobenzene surface relief gratings},
  issn      = {1520-6106},
  year      = {2004},
  abstract  = {Surface relief gratings were inscribed on azobenzene polymer films using a pulselike exposure of an Ar+ laser. The inscription process was initiated by a sequence of short pulses followed by much longer relaxation pauses. The development of the surface relief grating was probed by a He-Ne laser measuring the scattering intensity of the first- order grating peak. The growth time of the surface relief grating was found to be larger than the length of the pulses used. This unusual behavior can be considered as a nonlinear material response associated with the trans-cis isomerization of azobenzene moieties. In this study the polymer stress was assumed to be proportional to the number of cis-isomers. One-dimensional viscoelastic analysis was used to derive the polymer deformation. The rate of trans-cis isomerization increases with the intensity of the inscribing light; in the dark it is equal to the rate of thermal cis- trans isomerization. The respective relaxation times were estimated by fitting theoretical deformation curves to experimental data},
  language  = {en}
}