TY - JOUR A1 - Franz, Robert U. A1 - Conway, D. G. T1 - The transforming world of business -organizing global business processes: Tomorrow's experts JF - In: SAP Info 140 (2006),70-71 Y1 - 2006 SP - 70 EP - 71 ER - TY - JOUR A1 - Franz, Robert U. A1 - Conway, Dan G. T1 - Real world experience in international teamwork using cross cultural collaborative learning JF - In: Enterprise resource planning : teaching and research, SAP / F. Akaiwa and A.K. Soni (Eds.) Indiana University. - Bloomington : Indiana University, 2008. - (Innovation monograph ; 3) Y1 - 2008 SP - 21 EP - 27 ER - TY - JOUR A1 - Haas, G. A1 - Franz, Robert U. A1 - Rotermund, H. H. A1 - Tromp, R. M. A1 - Ertl, G. T1 - Imaging surface reactions with light JF - In: Surface Science Vol. 352–354 (1996), pp 1003–1006 N2 - Two new optical imaging methods with submonolayer surface sensitivity are applied together to investigate pattern formation of adsorbate concentrations on surfaces during heterogeneously catalysed reactions. Ellipso-microscopy for surface imaging (EMSI) is based on an ellipsometric effect, reflection anisotropy microscopy (RAM) on the polarising properties of surface anisotropies. For the CO oxidation reaction on a Pt(110) surface features like front propagation, target patterns and spiral waves are observed, similar as in prior investigations by photoemission electron microscopy (PEEM). By applying EMSI and RAM simultaneously and imaging the same spot of the surface, supplementary information is gained on the properties of the reaction diffusion fronts. When observing a reaction front by EMSI and RAM at temperatures between 330 and 420 K the image of the front in RAM trails behind its image in EMSI. EMSI seems to display changes in the coverage of adsorbates while RAM relates to variations in surface structure. Y1 - 1996 U6 - https://doi.org/10.1016/0039-6028(95)01316-4 SP - 1003 EP - 1006 ER - TY - JOUR A1 - Rotermund, H. H. A1 - Haas, G. A1 - Franz, Robert U. A1 - Tromp, R. M. A1 - Ertl, G. T1 - Imaging Pattern Formation in Surface Reactions from Ultrahigh Vacuum up to Atmospheric Pressures JF - In: Science 270 (1995) 5236, pp. 608-610 N2 - Two optical methods that allow pattern formation to be investigated at an arbitrary pressure are here applied to image concentration patterns of adsorbed species associated with heterogeneous catalytic reactions. In contrast to most surface physical techniques, these methods are not restricted to high vacuum conditions and thus bridge the “pressure gap.” With carbon monoxide oxidation on a (110) surface of platinum as an example, the coupling mechanisms responsible for spatiotemporal self-organization in surface reactions were followed from reaction-diffusion control to the thermokinetic region, associated with phenomena not previously observed in pattern formation. Y1 - 1995 U6 - https://doi.org/10.1126/science.270.5236.608 SP - 608 EP - 610 ER - TY - JOUR A1 - Rotermund, H. H. A1 - Haas, G. A1 - Franz, Robert U. A1 - Tromp, R. M. A1 - Ertl, G. T1 - Imaging pattern formation: bridging the pressure gap JF - In: Applied Physics A 61 (1995) 6, pp 569-574 N2 - Two surface-sensitive optical imaging methods, Ellipso-Microscopy for surface Imaging (EMSI) and Reflection Anisotropy Microscopy (RAM) are introduced. They allow imaging of pattern formation on surfaces, e.g., due to submonolayer coverages of adsorbates, at any arbitrary pressure. In spatio-temporal pattern formation during heterogeneously catalysed reactions this bridges the ‘pressure gap’ between well-defined UHV experiments and ‘real catalysis’. For the CO oxidation on Pt(110), the parameter space for pattern formation was extended up to 100 mbar, i.e., by 5 orders of magnitude compared to earlier investigations by Photo-Emission Electron Microscopy (PEEM) which had to be conducted below 10−3 mbar. With increasing pressure, the synchronisation mechanisms responsible for the observed pattern showed a gradual shift from reaction-diffusion to thermal-kinetic coupling unveiling previously unseen features of pattern formation in catalysis. Y1 - 1995 U6 - https://doi.org/10.1007/BF01542865 SP - 569 EP - 574 ER - TY - JOUR A1 - Schiebel, P. A1 - Ahlert, D. A1 - Franz, Robert U. A1 - Hohlwein, D. A1 - Prandl, W. A1 - Siemensmeyer, K. A1 - Wulf, K. T1 - Partial conversion of neutron incoherent into coherent scattering by NH3 quantum rotators JF - In: Physica B: Condensed Matter 226 (1996) 1–3, pp 234–237 N2 - Neutron diffraction experiments on powders are used to investigate the quantum mechanical behaviour of uniaxial rotators, i.e. NH3-molecules in Ni(NH3)6(PF6)2, Co(NH3)6(PF6)2 and Ni(NH3)6I2. A diffuse temperature dependent component of the total scattering, modulated ∼ sin QrH-H/QrH-H, is observed at a temperature of ≃ 20 K and below. This observation is due to the fact, that on cooling the sample to kT ∼ B (rotational constant) the rotational ground state is strongly populated. The ground state of a uniaxial free rotator, however, is completely polarized. As a consequence the scattering of those NH3 groups being in the ground state becomes coherent and is observable in diffraction experiments. Y1 - 1996 U6 - https://doi.org/10.1016/0921-4526(96)00312-2 SP - 234 EP - 237 ER -