X-ray and VIS light scattering from light-induced polymer gratings
-
Oliver Henneberg
Abstract
Sinusoidally shaped surface relief gratings made of polymer films containing azobenzene moieties can be created by holographic illumination with laser light of about λ ≈ 500 nm. The remarkable material transport takes place at temperatures far (100 K) below the glass transition temperature of the material. As probed by visible light scattering the efficiency of grating formation crucially depends on the polarization state of the laser light and is maximal when circular polarization is used. In contrast to VIS light scattering X-ray diffraction is most sensitive for periodic surface undulations with amplitudes below 10 nm. Thus, combined in-situ X-ray and visible light scattering at CHESS were used to investigate the dynamics of surface relief grating formations upon laser illumination. The time development of grating peaks up to 9th order at laser power of P = 20 mW/cm2 could be investigated, even the onset of grating formation as a function of light polarization. A linear growth of grating amplitude was observed for all polarizations. The growth velocity is maximal using circularly polarized light but very small for s-polarized light.
© 2004 Oldenbourg Wissenschaftsverlag GmbH
Articles in the same Issue
- Editorial: Structure Analysis of Thin Films and Nanostructures
- High resolution X-ray diffraction of MOVPE-grown ZnO/GaN/sapphire layers
- Exact determination of Indium incorporation in (InxGa1–xN/GaN)-multiple quantum well structures by X-ray diffraction and -reflectivity and its impact on optical properties
- Annealing studies of high Ge composition Si/SiGe multilayers
- Lateral periodicity of elastic domains in MnAs/GaAs(001) epitaxial layers studied by high resolution X-ray diffraction
- X-ray reflectivity study of the influence of temperature fluctuations on the density profile of thin liquid films
- Polymeric structures at interfaces: An X-ray scattering study
- X-ray and VIS light scattering from light-induced polymer gratings
- Imaging plates – a new life for electron diffraction structure analysis
- On the superstructure of KTiO2(OH)
- Molecular and crystal structure of Ac-(Z)-ΔAbu-NMe2 and Ac-DL-Abu-NMe2 as compared to those of related molecules
- J-aggregate structures in crystals of three bisazomethine dyes
- Books Received
Articles in the same Issue
- Editorial: Structure Analysis of Thin Films and Nanostructures
- High resolution X-ray diffraction of MOVPE-grown ZnO/GaN/sapphire layers
- Exact determination of Indium incorporation in (InxGa1–xN/GaN)-multiple quantum well structures by X-ray diffraction and -reflectivity and its impact on optical properties
- Annealing studies of high Ge composition Si/SiGe multilayers
- Lateral periodicity of elastic domains in MnAs/GaAs(001) epitaxial layers studied by high resolution X-ray diffraction
- X-ray reflectivity study of the influence of temperature fluctuations on the density profile of thin liquid films
- Polymeric structures at interfaces: An X-ray scattering study
- X-ray and VIS light scattering from light-induced polymer gratings
- Imaging plates – a new life for electron diffraction structure analysis
- On the superstructure of KTiO2(OH)
- Molecular and crystal structure of Ac-(Z)-ΔAbu-NMe2 and Ac-DL-Abu-NMe2 as compared to those of related molecules
- J-aggregate structures in crystals of three bisazomethine dyes
- Books Received
