Velimir R. Radmilović, Atomistic Phenomena in Engineering Materials

Velimir R. Radmilović

Serbian Academy of Sciences and Arts, Knez Mihailova 35, 11000, Belgrade, SERBIA, and
Nanotechnology and Functional Materials Center, Faculty of Technology and Metallurgy, University of Belgrade, Karnegijeva 4, 11120 Belgrade, SERBIA
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As the recipient of this award I would like to thank the Materials Research Society of Serbia and my nominators, Professor Robert Sinclair of Stanford University and Dr. Ulrich Dahmen of the Lawrence Berkeley National Laboratory, as well as Dr. Dragan Uskoković, who coordinated the nomination and the decision making process, and many other colleagues who supported my nomination, for the honor of receiving this recognition. The results I will be presenting have been carried out not only by myself, but also by many of my graduate students and post-docs. Without their great talent and hard work none of these results would have been possible, and this recognition goes to them as well. I feel very honored to be given the opportunity to present an overview of the work from my group and the collaborations I've had throughout the years with some outstanding scientists from all over the world. Given the time constraint, I decided to present a few examples which demonstrate the main research interests of my group which are related to phase transformations in engineering systems, multi purpose thin film sensors and nanomaterials for energy related applications. The main research tools we have used were cutting edge characterization techniques, like aberration-corrected high resolution transmission electron microscopy in tandem with structure modeling and simulation, energy filtered spectrum imaging, electron energy loss spectroscopy, etc. The first example will demonstrate a way of producing coarsening resistant monodispersed Al3(LiSc) core/shell particles in an Al matrix, generated by a complex size focusing effect that drives the system in the opposite direction of typical Ostwald ripening. Our modeling and simulations show that the complex precipitation pathway can be fully understood within the framework of classical theories of nucleation and growth. The second example will show the potential of Al-Mo and Ni-Mo binary alloy thin films as resonating nanoelectromechanical system (NEMS) cantilever nanosensors, studied by means of microstructural and elastic properties measurements, using fiber optical interferometry. The third and final example will show our recent discovery of a novel method for synthesizing M2O3(ZnO)n thermoelectric nanowires (MZO, M = In, Ga, Fe) using facile solid state diffusion, which enabled us to control their defect structure at an atomic level. Processing control at an atomic level will open up new avenues in synthesis of advanced materials with unprecedented mechanical and electronic properties.

I would like to acknowledge support from Serbian Academy of Sciences and Arts, under the project No. F-14

Plenary lectures - YUCOMAT 2017

member since 2008