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MEAM Seminar: “Data-driven Physics Discovery and Scale Bridging in Materials”

Zoom - Email MEAM for Link peterlit@seas.upenn.edu

In this talk I will provide an overview of our recent work in data-driven methods---mainly machine learning---to enhance computational materials physics models. This body of work has proceeded along two main fronts. The first is system inference, where we seek to identify physical mechanisms via their mathematical signatures as differential or algebraic operators. Our approach […]

ESE Seminar: “High-Frequency Power Conversion with Wide-Bandgap Semiconductors”

Zoom - Email ESE for Link jbatter@seas.upenn.edu

With the commercialization of wide-bandgap power semiconductors, multi-MHz switching frequencies are more compelling and critical to meet new applications demanding leaps in power density and efficiency. In the past, studies of these converters reported significant gaps between measured and modeled performance, often attributed to dynamic RDS,ON in GaN HEMTs. In particular, the power semiconductors – […]

CBE Seminar: “Antibiotic Discovery by Means of Computers”

Zoom - Email CBE for link

Abstract Until now, the natural world has supplied us with antibiotics. Bacteria, however, are increasingly resistant to these drugs. The next generation of antibiotics will likely come not from nature but from computer-based discovery. Computer-driven approaches have the potential to outperform humans, as demonstrated for pattern recognition of images and text. In order for machines […]

PICS Seminar: “Shock-induced turbulent mixing and interactions with flexible panels through simulations”

Zoom - Email CIS for link cherylh@cis.upenn.edu

Two fundamental challenges that arise in the development of air-breathing supersonic combustion ramjet engines (scramjets) for hypersonic flight are: 1) the rapid mixing of fuel and oxidizer that must occur prior to combustion, and 2) the coupling between the engine structure and the flow dynamics. Interactions of shock waves and turbulence that characterize the flow […]

PSOC Webinar: Emily Hatch

Talk title TBC Physical Sciences in Oncology Center PSOC@Penn Fall 2020 Webinar Series Mondays @ Noon (EST) For webinar links, please contact manu@seas.upenn.edu

MEAM/GRASP Seminar: “Saltatorial Locomotion on Terrain Obstacles”

Zoom - Email MEAM for Link peterlit@seas.upenn.edu

Robots often struggle to move through complicated environments from cluttered living spaces to treetop canopies where humans and animals flit with ease. Jumping is an exciting locomotion mode that can enable small ground-based robots to maneuver around large obstacles and gaps in complicated environments. A high-power jumping robot can rapidly traverse obstacles, but the resulting […]

CBE Seminar: “Delineating Mechanisms of BMP-mediated Patterning and Organization During Development Through Integrative Experiment and Simulation”

Zoom - Email CBE for link

Abstract The emergence of coordinated cellular, tissue, and organismal responses rely on complex biological networks. While the connectivity of the networks is increasingly defined, understanding the dynamics of the system and the emergence of coordinated responses at multiple spatial and temporal scales is an unsolved problem in many systems. This is a challenge addressed by […]

ESE Seminar: “Accelerating MRI with Deep Learning”

Zoom - Email ESE for Link jbatter@seas.upenn.edu

Magnetic Resonance Imaging (MRI) can be accelerated by sampling below the Shannon-Nyquist rate via compressed sensing techniques. In this talk, I will consider the problem of optimizing the under-sampling pattern in a data-driven fashion, which has been an open problem for over a decade. For a given sparsity constraint, our method optimizes the under-sampling pattern […]

CBE PhD Dissertation Defense | Polymer Mechanics and Dynamics in Polymer Nanoparticle Composites

Zoom - Email CBE for link

Abstract:  "Polymer nanoparticle composites (PNCs) have become an important topic of research due to their highly tunable macroscopic properties. Compared to the pure polymers, PNCs exhibit increase in mechanical strength, altered thermodynamic properties, and simultaneous improvement in permeability and selectivity in small molecule transport. Understanding the fundamental physics that control the behavior of both components […]