[cid:image004.jpg@01D685C0.EB336F80] The BNC Faculty Seminar Series is designed to provide faculty a platform to present an overview of their research and the opportunity for collaborative discussion with other BNC faculty and researchers across six colleges and 15 academic units. Michelle Thompson Assistant Professor of Department of Earth, Atmospheric, and Planetary Sciences April 22nd, 2021 | 12:00pm Join Zoom: https://purdue-edu.zoom.us/j/91754078808

From Atomic Scales to Asteroid Surfaces: Understanding Planetary Surfaces across the Solar System through the Coordinated Analysis of Returned Samples Abstract: Soils on the surfaces of airless planetary bodies such as the Moon and asteroids are continuously being modified by their exposure to interplanetary space. These surface materials experience micrometeorite bombardment and irradiation by energetic particles from the solar wind, a phenomenon collectively known as space weathering. Such interactions change the chemical and microstructural characteristics of soil grains and, as a result, their optical properties which we can measure with remote sensing spacecraft. In order to understand the nature of space weathering processes on airless planetary surfaces, my group combines nanoscale analyses of returned samples with experimental simulations of space weathering in the laboratory. I will present my work using various techniques to simulate micrometeorite impacts and solar wind irradiation of both returned samples and analog materials. I will discuss the analysis of these samples using various electron microscopy techniques. I will put these results into context for what we know about the Moon from the Apollo samples, and the ongoing NASA OSIRIS-REx and JAXA Hayabusa2 missions to near-Earth asteroids. Bio: Michelle Thompson got her bachelors' degrees in Geological Engineering and Biology at Queen's University in Kingston, Ontario, Canada. She received her MSc and PhD in planetary science from the University of Arizona. She completed a NASA Postdoctoral Fellowship at Johnson Space Center before moving to Purdue in 2018. She is currently an Assistant Professor in the department of Earth, Atmospheric, and Planetary Sciences. She is a member of the science team for the OSIRIS-REx and Hayabusa2 sample return missions. series: https://nanohub.org/groups/ml/handsontraining Upcoming BNC Virtual Faculty Seminars and Recorded Talks, Spring 2021: Date Faculty Title 10/14/21 Xiaoping Bao, Assistant Professor, Davidson School of Chemical Engineering Engineer and Manufacture Off-the-Shelf CAR-NK Cells for Targeted Cancer Immunotherapy 10/21/21 10/28/21 Andres Arrieta, Assistant Professor, School of Mechanical Engineering 11/4/21 Tian Li, Assistant Professor of Mechanical Engineering Naturally Nanostructured Cellulose towards Energy Water Nexus 11/11/21 Caitlin Proctor, Assistant Professor of Agricultural and Biological Engineering & Environmental and Ecological Engineering Biofilms in Everyday Life 11/18/21 Brett Savoie, Charles Davidson Assistant Professor of Chemical Engineering How Things Fall Apart: Learning from Degradation Chemistry

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