Speaker: Sergei V. Kalinin, Director
Affiliation: Institute for Functional Imaging of Materials and the Center for Nanophase Materials Sciences, Oak Ridge National Laboratory
The biased view of the nanoworld by beams and probes: from nanometer scale electrochemistry to atom-by-atom assembly
Ever accelerating pace of scientific progress in XXI century necessitates more efficient ways to design and prepare new materials, and developing new materials and device functionalities via nanometer and atom-by-atom control. Chief among those are electrochemical and electromechanical responses, underpinning electroresistive and ferroelectric memories, artificial muscles and molecular machines, and energy storage and conversion devices. In this presentation, I will present recent developments in scanning probe and electron microscopies that have opened the pathway to explore structure and electrochemical functionalities on nanometer and atomic scales. I will discuss the scanning probe microscopy-based studies of electrochemical phenomena on the nanometer- and atomic scale, and the evolution of big data and machine learning approaches in SPM. These advances bring forth the challenges of extracting relevant physical and (electro) chemical behaviors that can be linked to preparation pathways and predictive theory. Hence, I further discuss the extension of this approach to scanning transmission electron microscopy and present the opportunities opened by synergy of physics-informed big data and machine learning techniques with imaging to probe materials behavior, as exemplified by thermodynamics of solid solutions from the atomically resolved images of atom distribution, flexoelectric coupling from topological defects in ferroics, and reaction-diffusion constants from STEM movies of electrochemical growth, providing vital feedback to processing and device fabrication. I will further delineate the use of electron beam probes to explore atomic-scale reactions and phase evolution and assembly of matter atom by atom.
About the Speaker
Sergei V. Kalinin is the director of the ORNL Institute for Functional Imaging of Materials and distinguished research staff member at the Center for Nanophase Materials Sciences (CNMS) at Oak Ridge National Laboratory (at ORNL since 2002). He also holds a Joint Associate Professor position at the Department of Materials Science and Engineering at the University of Tennessee-Knoxville, and an Adjunct Faculty position at Pennsylvania State University and Sung Kyun Kwan University. His research interests include application of big data, deep data, and smart data approaches in atomically resolved and mesoscopic imaging to guide the development of advanced materials for energy and information technologies, as well as electromechanical, electrical, and transport phenomena and matter patterning on the nanoscale via scanning probe and electron microscopy.
Dr. Kalinin received his Ph.D. from the University of Pennsylvania in 2002, followed by a Wigner fellowship at ORNL (2002-2004). He is a fellow of APS, MRS, IEEE, IoP, and AVS; a recipient of the RMS medal for Scanning Probe Microscopy (2015); Presidential Early Career Award for Scientists and Engineers (PECASE) (2009); IEEE-UFFC Ferroelectrics Young Investigator Award (2010); Burton medal of Microscopy Society of America (2010); ISIF Young Investigator Award (2009); American Vacuum Society Peter Mark Memorial Award (2008); 3 R&D100 Awards (2008, 2010, and 2016); Ross Coffin Award (2003); Robert L. Coble Award of American Ceramics Society (2009); and a number of other distinctions. He has published more than 550 peer-reviewed journal papers, edited 3 books, and holds more than 18 patents. He has organized numerous symposia (including symposia on Scanning Probe Microscopy on Materials Research Society Fall meeting in 2004, 2007, and 2009) and workshops (including International workshop series on PFM and Nanoferroelectrics), and acted as consultant for companies such as Intel and several Scanning Probe Microscopy manufacturers. He is also a member of editorial boards for several international journals, including Nanotechnology, Journal of Applied Physics/Applied Physics Letters, and recently established Nature Partner Journal Computational Materials.
Date(s) - Feb 13, 2018
1:30 pm - 2:30 pm