Dr. Raul Garcia Diez wins the Dissertationspreis Adlershof 2017
Dr. Raul Garcia Diez was awarded for his PhD Thesis with the Dissertationspreis Adlershof 2017.
Jury with nominees and the winner, Dr. Raul Garcia Diez, (left), Photo: Matthias Brandt
With his talk on the properties of nanoparticles and how they can be measured more accurately at BESSY II, Dr. Raul Garcia Diez convinced the jury and was awarded the Dissertationspreis Adlershof 2017. Humboldt-Universität zu Berlin, IGAFA e. V. and the WISTA MANAGEMENT GmbH are the sponsors of this prize endowed with 3000 Euros. Garcia Diez completed his PhD in 2017 at PTB and TU Berlin and is now active as a post-doctoral researcher at HZB.
The use of nanoparticles in medicine is continuously growing, for example as platforms for drug-delivery or encapsulating imaging agents. In order to tailor nanoparticles for these applications, the functional properties of these particles need to be well understood.
In his thesis on "Characterization of Nanoparticles by Continuous Contrast Variation with Small-Angle X-ray Scattering" Raul Garcia Diez developed a method to study nanoparticles in a realistic environment with X-ray small-angle scattering in order to gain valuable information. The work was carried out with the HZB SAXS instrument, which is operated at the FCM beamline of the Physikalisch-Technische Bundesanstalt (PTB) in BESSY II under the cooperation between PTB and HZB.
With his work at PTB with Prof. Matthias Richter, he obtained his PhD title in May 2017 at the TU Berlin. Since then, Garcia Diez is a postdoctoral fellow with Prof. Marcus Bär at the HZB.
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- Metallic nanocatalysts: what really happens during catalysisUsing a combination of spectromicroscopy at BESSY II and microscopic analyses at DESY's NanoLab, a team has gained new insights into the chemical behaviour of nanocatalysts during catalysis. The nanoparticles consisted of a platinum core with a rhodium shell. This configuration allows a better understanding of structural changes in, for example, rhodium-platinum catalysts for emission control. The results show that under typical catalytic conditions, some of the rhodium in the shell can diffuse into the interior of the nanoparticles. However, most of it remains on the surface and oxidises. This process is strongly dependent on the surface orientation of the nanoparticle facets.
- KlarText Prize for Hanna TrzesniowskiThe chemist has been awarded the prestigious KlarText Prize for Science Communication by the Klaus Tschira Foundation.