“Blossoming Crystals”, Alta’s video entry in the 2014 Princeton Art of Science competition, was one of 12 videos selected as finalists from over 50 submissions. The video is being displayed in the Friend Center at Princeton University through April 2015. Learn more about how phase-field modeling was used to produce the variety of crystal morphologies shown in the video by reading this publication in Physical Review E.
A recent study of metallic phase coarsening in the anode of solid-oxide fuel cells has been published in Acta Materialia. [R. Davis, F. Abdeljawad, J. Lillibridge, M. Haataja. Acta Materialia 78, 2014.] Using phase field methods, this investigation revealed a strong dependence of performance-critical microstructural features on the interfacial wetting properties of the anode materials. These efforts open a new avenue towards the optimization of anode performance and advance microstructural characterization of composite materials. The image to the left shows a representative metallic structure resulting from simulation with the interface colored by contours of surface curvature.
Mikko was invited to speak at the CECAM workshop “Multiscale modeling of materials with atomic scale resolution using phase-field-crystal methods (MULTIMAT)” which took place May 21-23 on the campus of EPFL in Lausanne, Switzerland. Joel stood in for Mikko and gave a talk entitled “Atomistic Modeling of Crystal Plasticity and Creep Deformation with the Phase Field Crystal Approach”. A week full of familiar faces – and in a beautiful location.
Joel attended the MRS spring meeting this April in San Francisco and presented a talk entitled “Physically-Based Modeling of Redox Reactions and Mechanical Instability in SOFC Anode Materials“. His talk covered new results and work in progress concerned with extending Abdel’s model for redox damage. The Li-ion battery and SOFC modeling sessions were well-attended all week, a great time to be in San Francisco!
Over the past week, most of the group has been attending conferences in California. Mikko, Joel, and Ryan attended TMS hosted in the San Diego conference center. Mikko gave a talk on ”Mechanical Stability of Solid Oxide Fuel Cell (SOFC) Materials: A Microstructure-based Continuum Modeling Approach” and Ryan followed this up with “Phase Wettability and Morphological Evolution in Solid Oxide Fuel Cell Anodes.” Meanwhile, at the Biophysics conference in San Francisco, Tao presented on “Compositional Interface Dynamics within Symmetric and Asymmetric Planar Lipid Bilayer Membranes.” We are looking forward to these conferences next year!
The Haataja Group welcomes its newest member, Yuanda Xu (a.k.a. Larry)! Larry did his undergraduate studies at Peking University and majored in Physics. He will be pursuing interests in biophysics as he works closely with Tao Han to model lipid membranes. Good luck in your research Larry!