In-Person CNLS Conference Room (TA-3, Bldg 1690) Thursday, Jan. 19, 2022 3:45 – 4:45 pm (MT) Light refreshments 3:15 - 3:45 pm Speaker: Prof. Miguel Jose Yacaman Northern Arizona University “Multimetallic nanoparticles and thin films: The new paradigm for fabricating advanced materials” Abstract: It is well known that when two metals are alloyed there is an enhancement of properties beyond the simple addition of properties. A very important case was the discovery of Pt:Re catalysts back in the seventies that allow the fabrication of unleaded gasoline. Or the Pt-Rh-Pd three-way catalyst which greatly help to reduced pollution in our cities. An important development is the fabrication of multimetallic bulk alloys such as High Entropy Alloys and Quasicrystals with novel properties. The rules of alloying in the case of the bulk are well known and it is possible to tailor some of their properties. In the case nanoparticles and thin films, the situation is more complicated. In this case surface and planar defects play a key role. In this talk we will discuss some approaches to produce multimetallic nanoparticles and thin films with controlled structure and composition. Bio: Dr Jose Yacaman got his PhD from the National University of Mexico (UNAM) and has held positions at UNAM, The University of Texas, and currently at Northern Arizona University. He is the Regent’s Professor and Chair of the Applied Physics and Materials Science department. He held endowed Professor positions at the University of Texas at Austin and San Antonio. His work has been centered on structure and shape of clusters and nanoparticles where he has made important contributions particularly on electron microscopy and electron diffraction. He has around 600 publications and around 42,000 citations. He has received several awards including the Mehl award of the TMS, the Bouchet and Wheatley award of the American Physical Society, among others. He is a fellow of the APS, MRS, AVS, AAAS, and MSA.