Speakers

Biography: Frances M. Ross is a faculty member at the Department of Materials Science and Engineering at the Massachusetts Institute of Technology in Cambridge, MA, USA. She received her B.A. in Physics and Ph.D. in Materials Science from Cambridge University, UK, and along the way became an enthusiast of electron microscopy. She extended her interests to include in situ microscopy during her postdoc at A.T.&T. Bell Laboratories, then as a Staff Scientist at the National Center for Electron Microscopy, Lawrence Berkeley National Laboratory, and finally as a Research Staff Member at the IBM T. J. Watson Research Center, before joining MIT. Her research is based around the development of in situ electron microscopy techniques to help understand crystal growth, epitaxy, self-assembly and electrochemical and other liquid phase processes.

Talk title: Measuring and controlling atomic-scale transformations via in situ electron microscopy

Abstract: Electron microscopy helps us visualize the details of crystal growth and phase transformations with high spatial and temporal resolution, offering prospects for understanding and controlling the formation of nanostructures with useful properties. Two strategies for driving transformations in the microscope are to expose a sample to a gas-phase reactive environment or to excite it with a precisely placed electron beam. I will show examples of both approaches and discuss how they can be generalised. I will first describe transformations in faceted nanoscale islands. Oxide formation, silicidation and other processes can be studied by forming metal islands on inert graphene membranes then exposing them to oxygen or other gases, all under ultra high vacuum conditions in a customized microscope. We can quantify size effects and fabricate heterostructures by sequential metal deposition to yield information on strain relief and dislocation formation. I will then show phase transformations that are triggered and measured at individual atomic columns of a crystal using high-precision electron beam targeting. The resulting structural changes may offer a route to create defect arrays with electronic properties suited for quantum computing applications. As the sample environment and beam steering in the electron microscope continue to become more accurately controlled, broad prospects lie ahead for designing nanomaterials using electron microscopy.

Talk Title: Spectral imaging microscopy - from basic science to drug matching

Talk Title: The dynamic nature of netrin-1 filaments unraveled by cryo-EM

Talk Title: Bench to bedside. 3D fluorescence microscopy: a powerful clinical tool for oncology prognostic applications

Talk Title: A winding road - using microscopy to map the trafficking of MHC II

Talk Title: High speed super resolution microscopy to study events in mitosis and the properties of nanoscale condensates

Talk Title: Nanoscopy powered by machine learning: Novel insight into subcellular structure

Talk Title: Adaptive responses to HER2 targeting therapies fuel recurrences of breast cancer brain metastasis

Talk Title: Brain responses to laser interstitial thermal therapy (PITT) of brain tumors

Talk Title: Epitaxy governs the location and orientation of nucleation in crystalline systems (by

Talk Title: Imaging Materials Dynamics with Ultrafast Electron Microscopy

Talk Title: Electron Ptychography for Deep Sub-angstrom Resolution Without an Aberration Corrector

Talk Title: Looking at water in porous media

Talk Title: Exploring Industrial Solidification Phenomena via Advanced X-ray Imaging Techniques

Talk Title: In situ microscopy to understand electro-catalytic materials and processes