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MSE Seminar: “Materials Growth and Discovery for Magnetic and Quantum Applications”

Wu and Chen Auditorium (Room 101), Levine Hall 3330 Walnut Street, Philadelphia, PA, United States

For functional materials that are in a nascent stage, such as the antiferromagnetic spintronics, quantum information storage, and new semiconducting compounds, it is not clear what will be the high-performance materials of tomorrow. There is a pressing need to examine the complex properties of these emerging materials, and growing single crystals is a crucial step […]

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POSTPONED // MSE Seminar & Grace Hopper Lecture: “Materials for Quantum Technologies Through a Computational Lens”

Wu and Chen Auditorium (Room 101), Levine Hall 3330 Walnut Street, Philadelphia, PA, United States

Refreshments served at 10:15 AM In this talk, I will describe theoretical and computational strategies based on quantum mechanical calculations, aimed at predicting material properties suitable for the development of quantum technologies. Specifically, I will discuss the electronic structure and coherent states of spin defects in two- and three-dimensional semiconductors and insulators, obtained using both classical […]

Penn Engineering 2021-22 Heilmeier Award Lecture: Ritesh Agarwal

Wu and Chen Auditorium (Room 101), Levine Hall 3330 Walnut Street, Philadelphia, PA, United States

"Utilizing Quantum Geometry and Topology for Enabling Integrated Chiral Photonics" Classical and quantum computing devices need to ferry vast amounts of data, and optical interconnects provide a promising approach allowing faster speeds and larger bandwidths. Critical interconnect components are light sources, waveguides and detectors. Currently, the information is encoded in intensity and frequency but other […]

MEAM Seminar: “Materials and Manufacturing Solutions for Sustainable Energy”

Wu and Chen Auditorium (Room 101), Levine Hall 3330 Walnut Street, Philadelphia, PA, United States

In response to the grave and escalating threat of climate change, the US Department of Energy has announced a series of ambitious Energy Earth Shot Initiatives. These target an 80% reduction in the cost of clean hydrogen by 2030 and net-zero carbon emissions by 2050. The first of the initiatives focuses on establishing a green […]

LRSM Special Lecture: “Pursuing a Scientific Career at a National Laboratory”

Glandt Forum, Singh Center for Nanotechnology 3205 Walnut Street, Philadelphia, PA, United States

If you are finishing your PhD or your postdoctoral tenure you may be asking yourself, What’s next? Should I pursue an academic career, as my thesis adviser or postdoctoral supervisor has done? Or should I look elsewhere, perhaps at industry, or government? These are great questions that most of us have asked ourselves at the […]

MSE Seminar: “Additive Manufacturing of Compositionally Complex Alloys with Engineered Microstructures”

Wu and Chen Auditorium (Room 101), Levine Hall 3330 Walnut Street, Philadelphia, PA, United States

The increasing demand for structural metals has driven increasingly complex compositions, which bring critical challenges in processing of these materials. Additive manufacturing, also called 3D printing, is a disruptive technology for creating structural materials and components in a single print. In this talk, I will present our recent work on additive manufacturing of compositionally complex […]

MSE Seminar: “What Governs Grain Boundary Migration?”

Wu and Chen Auditorium (Room 101), Levine Hall 3330 Walnut Street, Philadelphia, PA, United States

Curvature is the common driving force for grain boundary motion in all polycrystals. However, models and simulations derived from curvature-based motion cannot predict irregular, albeit commonly observed, grain growth behavior. To build better predictive models, we need to employ new tools to understand what governs grain growth. First, I will demonstrate how high energy x-ray […]

MSE Seminar: “A More Sustainable Future via Polymer Circularity”

Wu and Chen Auditorium (Room 101), Levine Hall 3330 Walnut Street, Philadelphia, PA, United States

In a Circular Economy, atoms and molecules are kept inside the economy where they continue to produce value, and they are kept out of unwanted places like our environment.  At a high level, this concept applied to polymers and plastics should reduce the flow of material into the environment, while improving efficiency and reducing demand […]

MSE Seminar: “Emerging Energy Materials: Joule Heating and Wood”

Wu and Chen Auditorium (Room 101), Levine Hall 3330 Walnut Street, Philadelphia, PA, United States

I lead an Energy Materials and Devices research group at the University of Maryland, College Park, with a major mission to address the CO2 challenge. Our current research interests include (1) ultrahigh-temperature synthesis of new materials and their use in advanced energy devices, (2) beyond Li-ion batteries for transportation and the grid, and (3) wood […]

MSE Seminar: “Understanding Degradation in Metal Halide Perovskite Solar Cells and Modules”

Wu and Chen Auditorium (Room 101), Levine Hall 3330 Walnut Street, Philadelphia, PA, United States

Halide perovskite solar cells (PSCs) have been the focus of much research in recent years due to their extremely high photoconversion efficiencies and their ability to be synthesized by solution processing.  These materials crystallize in the perovskite, AMX3 crystal structure where A is a monovalent cation (e.g. methyl ammonium, MA, formamidinium, FA, and/or Cs), M is the […]