TY - JOUR A1 - Henneberg, Oliver A1 - Geue, Thomas A1 - Pietsch, Ullrich A1 - Winter, Bernd T1 - Investigation of azobenzene side group orientation in polymer surface relief gratings by means of photoelectron spectroscopy N2 - The molecular orientation of azobenzene side groups in polymer films before (nonpatterned) and after (patterned) development of a surface relief grating has been investigated by photoelectron spectroscopy using synchrotron radiation. The photoemission spectra obtained for 60-100 eV photons of a patterned and a nonpatterned surface are similar when the polarization vector of the synchrotron light is parallel to the grating vector. However, for perpendicular excitation, considerable spectral intensity differences can be observed for 9-14 eV electron binding energy. The observed changes are attributed to the formation of well-oriented azobenzenes at the surface. (C) 2004 American Institute of Physics Y1 - 2004 UR - http://scitation.aip.org/journals/doc/APPLAB-ft/vol_84/iss_9/1561_1.html ER -