Dresden 2011 – scientific programme
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DS: Fachverband Dünne Schichten
DS 8: Thin Film Characterisation: Structure Analysis and Composition (XRD, TEM, XPS, SIMS, RBS, ...) I
DS 8.2: Talk
Monday, March 14, 2011, 10:30–10:45, GER 38
BioRef - a versatile time-of-flight reflectometer for soft matter applications at Helmholtz-Zentrum Berlin für Materialien und Energie, Berlin — •Markus Strobl1, Roland Steitz1, Martin Kreuzer1,2, Reiner Dahint2, and Michael Grunze2 — 1Helmholtz Zentrum Berlin für Materialien und Energie, Hahn-Meitner Platz 1, 14109 Berlin — 2Universität Heidelberg, Im Neuenheimer Feld 229, 69120 Heidelberg
BioRef is a versatile novel time-of-flight (TOF) reflectometer at the reactor neutron source BER II of the Helmholtz Centre Berlin (HZB) featuring an infrared spectrometer for complementary in-situ ATR-FTIR measurements. The instrument has recently undergone commissioning and is now available for specular and off-specular neutron reflectivity measurements. BioRef is especially dedicated to the investigation of soft matter systems and studies at the solid liquid interface. Due to flexible resolution modes and variable utilized wavelength bands that allow for focusing onto a selected q-range BioRef enables a broad range of surface and interface investigations and even kinetic studies with sub-second time resolution. The instrumental conditions can be tailored to the specific requirements of a wide range of applications. The performance is demonstrated by several reference measurements and the unique option of in-situ on-board infrared spectroscopy is introduced by the example of a phase transition study in a lipid multilayer film.