8th Liquid Matter Conference September 6-10, 2011 Wien, Austria ...

P4.50Fri 911:10-14:00Application of holographic gratings recorded innanoparticle-polymer composites as cold-neutrondiffractive elementsWilfried Schranz, 1 Juergen Klepp, 1 Christian Pruner, 2 Martin Fally, 1 YasuoTomita, 3 Irena Drevensek-Olenik, 4 and Saso Gyergyek 51 University of Vienna, Boltzmanngasse 5, 1090, Vienna, Austria2 University of Salzburg, Salzburg, Austria3 University of Electro-Communications, Tokyo, Japan4 University of Ljubljana, Ljubljana, Slovenia5 Jozef Stefan Institute, Ljubljana, SloveniaPrevious experiments with holographically produced neutron optical gratings, containing polymerdispersedliquid-crystals or deuterated (poly)methylmethacrylate, culminated in the successfultests of triple-Laue interferometers for cold neutrons. New data shows that gratings in nanoparticlepolymercomposites offer advantages for tuning the parameters crucial for neutron diffraction bysuitable choice of the species and concentration of nanoparticles. Recently, a beam splitter forneutrons of 2nm wavelength has been demonstrated with a grating recorded in such materials.Furthermore, we show how our concept can be extended to include magnetic interactions of neutronswith superparamagnetic nanoparticles to obtain polarizing beam splitters for cold neutrons.50