Dresden 2006 – wissenschaftliches Programm
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CPP: Chemische Physik und Polymerphysik
CPP 13: POSTER New Experimental Techniques
CPP 13.13: Poster
Dienstag, 28. März 2006, 17:00–19:00, P3
New methods for the characterisation of orientation in thin polymer films and application to light-induced anisotropy — •Christoph Jung1, Joachim Stumpe2, Olga Kulikovska2, Emiel Peeters3, and Bianca van der Zande3 — 1Lehrstuhl EPIV/ Prof. Dr. J. Köhler, University of Bayreuth, Universitätsstr. 30, 95447 Bayreuth, Germany — 2Fraunhoferinstitute of Applied Polymer Research, Geiselbergstr. 69, 14476 Potsdam, Germany — 3Philips Research Laboratories, Prof. Holstlaan 4, 5656 AA Eindhoven, The Netherlands
The recently developed method of Immersion Transmission Ellipsometry (ITE, patent pending) allows to fully characterise the absolute 3D refractive indices and the thicknesses of anisotropic films, which are thinner than the wavelength of the probing light, with high accuracy.The three-dimensional properties of anisotropic thin films are important for the display technology and optical data storage, predominantly. In addition, the method of waveguide spectroscopy is refined to explore the tilt gradient of thicker films in its profile. Different biaxial, tilted and splayed films were generated by photo-orientation and photoalignment in the bulk of photochromic and liquid crystalline polymer films and subsequently characterised.
[1] C. C. Jung and J. Stumpe; Immersion transmisssion ellipsometry (ITE): a new method for the precise determination of the 3D indicatrix of thin films, Appl. Phys. B, 80, 231-238 (2005).
[2] C. C. Jung, J. Stumpe, E. Peeters, B. M. I. van der Zande; Novel way for Full Characterisation of Splayed Retarders using Wentzel-Kramers-Brillouin Method, Jpn. J. Appl. Phys., 44, 4000-4005 (2005).