On the way towards more accurate understanding of the dynamics under gas atmosphere, Ernst Ruska-Center for Microscopy and Spectroscopy with Electrons has launched a Master Student Project that will deal with the challenges of beam effects on catalyst nanoparticles under gas environment. More specifically, in this project a systematic study on the effect of electron dose on the DENSsolutions Climate Nano-Reactor will be carried out as well as on the catalyst nanoparticles, with the aim of determining the optimum dose level in the trade-off between damage and signal. Characterizing the effect of the electron beam will result in a greater understanding of in-situ experiments in the electron microscope in order to bridge the ‘pressure-gap’. Towards the end of the project the optimized dose will be used to look at Pt/carbon catalysts for hydrogen fuel-cell applications.
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In the second part of this webinar, we will look more closely at the accuracy of the in-situ heating that is required for each of the experiments presented. MEMS-based heating will be specifically discussed since these holders are now widely used to improve stability at elevated temperatures. We will discuss the technology behind DENSsolutions heating solutions as well as methods, including one EELS-based technique, used to confirm the temperature accuracy of the sample.