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November 23rd 2017
The light-driven water splitting reaction to generate molecular hydrogen and oxygen is one of the most promising processes for producing clean fuels. In the approach we are following we attempt to construct a photoelectrochemical (PEC) cell based on molecular components. The two half reactions, water oxidation (anode-side) and proton reduction (cathode-side), both require their own specialized catalysts, linkages, chromophores, and electrode materials. Initially, these components are made and studied separately, first in solution and subsequently as integrated part of the electrode.
November 16th 2017
Many layered materials can be mechanically exfoliated to atomically thin sheets, the most famous being graphene. This opens the possibility to stack different layer types together to form materials with novel properties: van der Waals (vdW) systems. The extent to which vdW systemsdiffer from the mother materials is governed by the interaction between the different layers. Here, we investigate interlayer interactions using several novel techniques developed in our lab. At the basis is a low-energy electron microscope (LEEM).
November 10th 2017
Biomass treatment by atmospheric pressure plasmas to enable the production of bioethanol is a big issue today. Discharges favor the degradation of lignin because it creates efficiently reactive species that interact strongly with the biomass. A surface wave discharge (SWD) in argon at atmospheric-pressure generated by a Surfatron device was studied by optical emission and mass spectrometries. The electron density ne, electron temperature Te and gas temperature Tg was determined as a function of applied power and gas flow rate.
November 9th 2017
In this talk I will give an overview of ongoing efforts at Delft University in the area of particle transport methods for both neutron transport as occurring in reactor physics systems as well as for proton transport that is relevant for proton radiotherapy. For neutron transport I will discuss the various approaches that are most often used and their relative merits in the reactor physics field. Focus will be on mesh adaptation, uncertainty quantification and on multi-physics analyses.
October 26th 2017
   The recent progress of plasma-detachment research as well as plasma-material interaction studies in Nagoya Univ. are outlined in this seminar. Research on plasma detachment, which is thought to be one of the most promising methods to reduce heat load on divertor plate, is currently underway in the linear diverter plasma simulator, NAGDIS-II. We have measured the detailed plasma structure around the recombination front region by using 2D Langmuir probe system and Thomson scattering diagnostics.