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January 2022

MEAM Seminar: “Assembly Engineering of Patchy Particles into Complex Structures, and Beyond”

January 18 at 10:00 AM - 11:30 AM
Zoom – Email MEAM for Link, peterlit@seas.upenn.edu

The ability to predict, design and make the perfect material with just the right properties to do what we want, how we want, and when we want is the holy grail of materials research. Such “materials on demand” require control over thermodynamics, kinetics, nonequilibrium behavior, and structure across many length and time scales. With continuing advances in computer simulation capabilities, we have never been closer to the goal, but many challenges – and opportunities – remain. Many of those are…

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MEAM Seminar: “‘Tiny-but-tough’ GaN- and Graphene-based Nanoelectronics for Extreme Harsh Environments”

January 25 at 10:00 AM - 12:00 PM
Zoom – Email MEAM for Link, peterlit@seas.upenn.edu

Gallium nitride (GaN) nanoelectronics have operated at temperatures as high as 1000°C making it a viable platform for robust space-grade (“tiny-but-tough”) electronics and nano-satellites. Even with these major technological breakthroughs, we have just begun the “GaN revolution.” New communities are adopting this nanoelectronic platform for a multitude of emerging device applications including the following: sensing, energy harvesting, actuation, and communication. In this talk, we will review and discuss the benefits of GaN’s two-dimensional electron gas (2DEG) over silicon’s p-n junction…

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PICS Colloquium: “Taking a layman’s perspective to turbulence modeling”

January 28 at 2:00 PM - 3:00 PM
PICS Conference Room 534 – A Wing , 5th Floor, 3401 Walnut Street
Philadelphia, PA 19104 United States
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Abstract: Turbulence is an unsolved problem in classical physics. Its modeling often involves physical, mathematical, and numerical concepts that are daunting to even experienced engineers. This makes it very hard for a user to take a turbulence model from the literature and apply it in real-world engineering. This talk will take a layman's perspective to turbulence modeling. Special attention will be given to near-wall turbulence modeling. We will try to discuss the following two possibilities, both of which are brought…

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February 2022

PICS Colloquium “Driving physics of inverted flag flapping”

February 25 at 2:00 PM - 3:00 PM
Zoom – email kathom@seas.upenn.edu

Abstract: Fluid-structure interaction (FSI) is ubiquitous in the natural and engineered world, and a better understanding of FSI systems can aid in the design of renewable energy harvesting technologies, bio-inspired propulsion vehicles, and biomedical devices (to name a few applications). In this talk we will investigate “inverted” flag flapping, in which the flag is clamped at its trailing edge with respect to the incoming uniform flow. This canonical system exhibits a diverse range of behavioral regimes, including flapping with amplitudes comparable to the…

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