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Content archived on 2024-05-29

Nuclear organisation in the regulation of Hox gene clusters

Final Activity Report Summary - NORHC (Nuclear organisation in the regulation of Hox gene clusters)

INS data of the protons has been collected and also data of the perovskite lattice itself. Upon introduction of H into the BCY sample clear bands appear in the higher energy regions and these modes are undoubtedly connected to H modes in the system. Contrary to the common picture of H in the BCY being part of an OH bond, only very weak peak is seen in the energy transfer corresponding to an OH stretching mode (around 400 meV).

Various aspects of the proposed research have been dealt with in the last 24 months. By themselves they cannot yet point definitely towards a specific model of H motion in yttrium-doped barium cerate. Referring back to the introduction, the current data show overall that this particular perovskite system cannot provide significant proton conductivity at temperatures beyond 600 degrees Celsius, due to dehydration. However, more pieces of information need to be collected and the contribution of simulation is emphasised, but also coupling the neutron scattering measurements to mass measurements to give a clear idea about the hydrogen content under any given combination of temperature and humidity.