Christian Riekel
Associate Editor for Materials Soft Matter and Biological Instrumentations

Claudio Ando Nicolini

Christian Riekel received his Ph.D. in Chemistry at the University of Munich in 1973. He started his career at the neutron research reactor in Grenoble-France (ILL) where he developed in-situ neutron diffraction techniques for studying solid-state chemical reactions. He then moved to the Polymer Department of the University of Hamburg and developed a synchrotron radiation scattering beamline at DESY for studying polymer phase transformations in real time by small-angle and wide-angle X-ray scattering (SAXS/WAXS) techniques in the group of Prof. Zachmann. He also habilitated in Polymer Chemistry at the University of Hamburg. He joined in 1986 the founding team of the European Synchrotron (ESRF) in Grenoble. He became responsible for the build-up and operation of the Microfocus beamline (ID13) and the development of an in-house scientific life as scientist and group leader for Soft Condensed Matter. After his retirement, the ID13 beamline continues to be routinely available to the scientific community. The principal scattering techniques available to users are SAXS/WAXS including GISAXS and X-ray fluorescence with beam sizes ranging from about 1 micron to sub-100 nm. Scientific applications range from hard to soft condensed matter, biomaterials and nanomaterials. Indeed, protein microcrystallography has been pioneered at the ID13 beamline.

Christian Riekel holds currently an emeritus scientist position at the ESRF and pursues his interdisciplinary scientific interests with an emphasis on the relation of microscopic structure to macroscopic function of soft and biological materials. One of the recurrent R&D topics are beta-sheet materials such as silks and amyloids. Indeed, he has developed single fibre diffraction techniques and studied biospinning of spiders in-vivo. He is also interested in R&D of sample environments adapted to X-ray micro- and nanobeams. Examples are microfluidic cells, inkjet systems, optical tweezers and artificially structured surfaces. Indeed, "smart" surfaces have been used for X-ray probing of the self-assembly of highly oriented amyloidic fibrils and gold nanoparticles clusters.

Areas of Expertise: Inorganic, organic, polymeric and soft materials. Functional biomaterials and biomimicry. Micro- and nanostructured functional materials including surfaces. Synchrotron radiation and neutron scattering methods related to materials and life science topics. Microfluidics including digital microfluidics.

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