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DTSTART;TZID=America/New_York:20211003T130000
DTEND;TZID=America/New_York:20211003T160000
DTSTAMP:20260406T144921
CREATED:20210824T180730Z
LAST-MODIFIED:20210824T180730Z
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SUMMARY:ODEI Spotlight: Penn Pride Palooza 2021
DESCRIPTION:Kick-off LGBTQ+ History Month and warm-up for National Coming Out Day with a bang! Come to our festival featuring queer dance lessons (no experience needed)\, progressive pride flags galore\, and of course yummy food (gluten-free and vegan options available; more TBA. All are welcome.
URL:https://seasevents.nmsdev7.com/event/odei-spotlight-pride-a-palooza-2021/
LOCATION:LGBT Center – 3907 Spruce Street\, 3907 Spruce Street\, Philadelphia\, United States
CATEGORIES:Diversity, Equity and Inclusion
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20211004T100000
DTEND;TZID=America/New_York:20211004T110000
DTSTAMP:20260406T144921
CREATED:20210927T160737Z
LAST-MODIFIED:20210927T160737Z
UID:10006915-1633341600-1633345200@seasevents.nmsdev7.com
SUMMARY:MEAM PhD Thesis Defense: "Dynamic Behavior of Periodic Media and Elastic Metamaterials"
DESCRIPTION:Periodic media and resonant\, acoustic/elastic metamaterials possess extraordinary frequency band gaps where no waves may propagate. In this dissertation\, we leverage numerical simulations to gain insight into practical ways to effectively measure and characterize the behavior of these materials from experimental observables and also explore physical mechanisms to optimize their performance\, particularly in the context of resonant metamaterials. With respect to the former\, the finite nature of experiments prevents the usage of Bloch’s theorem and unit cell analysis. To circumvent this\, an FFT procedure combined with an exponential fitting method are used to extract the real and imaginary part of dispersion relations from real-time simulation data. Difficulties such as sample length and frequency domain resolution\, associated with this type of analysis\, are examined parametrically using synthetic data from numerical simulations. In addition to this study\, an additively manufactured\, resonant metamaterial made of a soft PDMS rubber is analyzed using both experimental data and finite element models. By isolating several physical features of the material\, a new mechanism for band gap formation is discovered where band gaps associated with different vibrational modes are combined to produce an ultrabroad band gap through the use of a compliant frame.
URL:https://seasevents.nmsdev7.com/event/meam-phd-thesis-defense-dynamic-behavior-of-periodic-media-and-elastic-metamaterials/
LOCATION:Zoom – Email MEAM for Link\, peterlit@seas.upenn.edu
CATEGORIES:Doctoral,Dissertation or Thesis Defense
ORGANIZER;CN="Mechanical Engineering and Applied Mechanics":MAILTO:meam@seas.upenn.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20211004T120000
DTEND;TZID=America/New_York:20211004T130000
DTSTAMP:20260406T144921
CREATED:20210913T132848Z
LAST-MODIFIED:20210913T132848Z
UID:10006887-1633348800-1633352400@seasevents.nmsdev7.com
SUMMARY:PSOC@Penn: "Microtubule Deacetylation Enables in vivo Collective Cell Migration by Tuning Cell Stiffness in Relation to Substrate Stiffness" (Abdul N. Malmi-Kakkada)
DESCRIPTION:Room: Towne 225/Raisler Lounge \nFor zoom link\, contact manu@seas.upenn.edu.
URL:https://seasevents.nmsdev7.com/event/psocpenn-microtubule-deacetylation-enables-in-vivo-collective-cell-migration-by-tuning-cell-stiffness-in-relation-to-substrate-stiffness-abdul-n-malmi-kakkada/
LOCATION:Raisler Lounge (Room 225)\, Towne Building\, 220 South 33rd Street\, Philadelphia\, PA\, 19104\, United States
CATEGORIES:Seminar
ORGANIZER;CN="PSOC":MAILTO:manu@seas.upenn.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20211005T100000
DTEND;TZID=America/New_York:20211005T113000
DTSTAMP:20260406T144921
CREATED:20210916T145236Z
LAST-MODIFIED:20210916T145236Z
UID:10006901-1633428000-1633433400@seasevents.nmsdev7.com
SUMMARY:MEAM Seminar: "Electrets\, Magnetics and Deformation in Soft Materials"
DESCRIPTION:Soft robotics\, energy harvesting\, large-deformation sensing and actuation\, are just some of the applications that can be enabled by soft dielectrics that demonstrate substantive electromechanical coupling. Imagine now also a material that will produce electricity and deform substantively via a contactless\, wireless magnetic signal. Unfortunately\, truly soft\, naturally occurring piezoelectric or magnetoelectric materials essentially do not exist. In this presentation\, I will illustrate how mechanics and the concept of electrets i.e. materials with immobile embedded charges and dipoles\, may be used for the design of soft piezoelectric\, magnetoelectric\, and electrocaloric materials. I will also briefly discuss the ramifications our results to explain biophysical phenomena such as the infrared vision of snakes or the ability of some animals to detect magnetic fields.
URL:https://seasevents.nmsdev7.com/event/meam-seminar-electrets-magnetics-and-deformation-in-soft-materials/
LOCATION:Zoom – Email MEAM for Link\, peterlit@seas.upenn.edu
CATEGORIES:Seminar
ORGANIZER;CN="Mechanical Engineering and Applied Mechanics":MAILTO:meam@seas.upenn.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20211005T130000
DTEND;TZID=America/New_York:20211005T140000
DTSTAMP:20260406T144921
CREATED:20210920T141931Z
LAST-MODIFIED:20210920T141931Z
UID:10006911-1633438800-1633442400@seasevents.nmsdev7.com
SUMMARY:MEAM PhD Thesis Defense: "Analytical Homogenization Estimates for the Effective Properties and Field Statistics of Viscoplastic Composites and Particle Suspensions"
DESCRIPTION:Heterogeneous materials are commonly found in nature (e.g. soil\, rock\, blood) and engineering applications (e.g. paints\, lubricants\, sintered materials). Understanding the microstructure-properties relations is crucial to predicting how these materials fail and behave during processing. \nIn this thesis\, we develop semi-analytical homogenization estimates for the macroscopic properties and field statistics of viscoplastic composites. A generalization of classical homogenization estimates for anisotropic linear two-phase composites is proposed. The generalized estimates are consistent with known bounds for the effective properties and satisfy certain duality properties relating the primal and dual formulations of the homogenization problem. Particularly for composites with large phase contrast\, the new estimates are expected to have improved predictive capabilities as they can capture — at least qualitatively — the onset of clustering of the inclusion phase at non-dilute volume fractions. The new estimates also have important implications for the phase averages of the stress and strain-rate fields as well as the field fluctuations. In addition\, for the special case of monodisperse suspensions of rigid spheres in a Newtonian fluid\, the new estimates for the shear viscosity are validated against experimental results. \nThe generalized estimates are then used to estimate the effective behavior of nonlinear viscoplastic composites. To that end\, we employ the variational linear comparison methods\, which make use of optimally chosen linear comparison composite media\, allowing the direct conversion of estimates for linear composites into corresponding estimates for nonlinear composites. For suspensions of rigid spheres in a Herschel-Bulkley fluid\, the estimates for the effective yield and flow stress are validated against experimental results. Second-order linear comparison homogenization estimates for nonlinear viscoplastic composites with infinite phase contrast are generated and the dependence of the effective behavior on the macroscopic loading conditions is investigated. Special attention is devoted to the method’s ability to capture the highly localized anisotropic deformation patterns that emerge in composites with a finite yield stress. Under pure shear loading conditions the dependence of the effective yield stress is found to be non-analytic for dilute inclusion volume fractions which is shown to be connected to the emergence of shear bands.
URL:https://seasevents.nmsdev7.com/event/meam-phd-thesis-defense-analytical-homogenization-estimates-for-the-effective-properties-and-field-statistics-of-viscoplastic-composites-and-particle-suspensions/
LOCATION:Zoom – Email MEAM for Link\, peterlit@seas.upenn.edu
CATEGORIES:Doctoral,Dissertation or Thesis Defense
ORGANIZER;CN="Mechanical Engineering and Applied Mechanics":MAILTO:meam@seas.upenn.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20211006T113000
DTEND;TZID=America/New_York:20211006T123000
DTSTAMP:20260406T144921
CREATED:20211004T125558Z
LAST-MODIFIED:20211004T125558Z
UID:10006922-1633519800-1633523400@seasevents.nmsdev7.com
SUMMARY:ESE Fall Colloquium Seminar - "Toward Practical Quantum Advantage: Many-body Physics in the NISQ Era"
DESCRIPTION:Quantum processors of today are already capable of surpassing classical supercomputers on certain specialized tasks [1]. A current milestone for the quantum information science community is the fulfilment of quantum computational advantage on a practical problem of interest. The beginning of this talk will outline our technical progress on realizing various high-fidelity quantum gates on Google’s Sycamore processor\, such as iSWAP and CPHASE. We then focus on two experiments studying many-body phenomena that have previously proven elusive on all quantum computing or simulation platforms: discrete time-crystals (DTC) and quantum scrambling. \nIn the DTC work\, we implement Floquet dynamics on a 1D chain of 20 superconducting qubits [2]. Engineered disorders in the two-qubit couplings allow many-body localization (MBL) to occur despite strong external drive\, thereby stabilizing a non-equilibrium phase of matter [3]. We carefully validate the phase structure of the DTC by probing the average response of all eigenstates belonging to the Floquet unitary. Using a suitable choice of order parameter\, we further identify the location of the MBL-ergodicity crossover via experimentally observed finite-size effects. These results open a direct path to studying quantum phase transitions and critical phenomena on NISQ quantum processors. In the quantum scrambling work [4]\, we deploy a full 2D grid of 53 qubits and implement quantum circuits with tunable complexity. By measuring the quantum fluctuation of out-of-time-ordered correlators (OTOCs)\, we resolve the two key requisites of quantum scrambling: operator spreading and operator entanglement. Results from the most complex quantum circuits require ~100 hours to simulate on a CPU core via best-known classical algorithms\, indicating the potential for achieving practical quantum advantage in the near term. \n[1] Google AI Quantum and Collaborators\, Nature 574\, 505 (2019). \n[2] X. Mi\, M. Ippoliti\, K. Kechedzhi\, V. Khemani\, P. Roushan et al.\,  arXiv:2107.13571 (2021). \n[3] M. Ippoliti\, K. Kechedzhi\, R. Moessner\, S. Shivaji\, V. Khemani\,  PRX Quantum (In press). \n[4] X. Mi\, P. Roushan\, C. Quintana\, K. Kechedzhi\, V. Smelyanskiy\, Y. Chen et al.\, arXiv:2101.08870 (2021).
URL:https://seasevents.nmsdev7.com/event/ese-fall-colloquium-seminar-toward-practical-quantum-advantage-many-body-physics-in-the-nisq-era/
LOCATION:Raisler Lounge (Room 225)\, Towne Building\, 220 South 33rd Street\, Philadelphia\, PA\, 19104\, United States
ORGANIZER;CN="Electrical and Systems Engineering":MAILTO:eseevents@seas.upenn.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20211006T120000
DTEND;TZID=America/New_York:20211006T130000
DTSTAMP:20260406T144921
CREATED:20210908T175428Z
LAST-MODIFIED:20210908T175428Z
UID:10006883-1633521600-1633525200@seasevents.nmsdev7.com
SUMMARY:PICS Student Seminar: "Keshav Patil and Yansong Gao"
DESCRIPTION:Yansong Gao Title: “A Free-Energy Principle for Representation Learning” \nKeshav Patil Title: “Altered protein dynamics delineates the oncogenic potential of various kinase mutations” \nOn Wednesday\, October 6 at 12:00\, PICS will host a virtual student seminar featuring Yansong Gao\, a 4th year PhD in the Chaudhari group; and Keshav Patil\, 4th year PhD in the Radhakrishnan group. At this seminar each student will present for 30 minutes and then take questions. \n 
URL:https://seasevents.nmsdev7.com/event/pics-student-serminar-keshav-patil-and-yansong-gao/
LOCATION:Zoom – email kathom@seas.upenn.edu
CATEGORIES:Student
ORGANIZER;CN="Penn Institute for Computational Science (PICS)":MAILTO:dkparks@seas.upenn.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20211006T153000
DTEND;TZID=America/New_York:20211006T163000
DTSTAMP:20260406T144921
CREATED:20210826T180855Z
LAST-MODIFIED:20210826T180855Z
UID:10006870-1633534200-1633537800@seasevents.nmsdev7.com
SUMMARY:CBE Seminar: "Electrolytes for High Energy Li-ion and Li Metal Batteries"
DESCRIPTION:Abstract \nElectrolytes are critical enabling components for Li-ion batteries to safely operate within a wide temperature range\, under extreme fast charging\, and under intense abuse conditions without sacrificing energy density and cycle life. Current electrolytes cannot satisfy these requirements. We developed advanced all-fluorinated electrolytes\, water-in-sale (WIS) electrolytes and solid-state electrolytes aiming to simultaneously enhance cell energy density and safety.  Guided by the electrolyte design principle for high-capacity electrodes with large volume changes\, we developed serval organic liquid electrolytes suitable for micro-sized Si and Li metal anodes and NMC cathodes. We also reduced the salt concentration of water-in-salt electrolytes from 21m to 4.5m\, and extended the electrochemical stability window from 3.0V of WIS to 3.4V. These improved electrolytes enable LiMn2O4/Li4Ti5O12 pouch cells with an areal capacity of 2.5 mAh/cm2 and a P/N capacity ratio of 1.14 to achieve a long cycle life of 500. For solid state electrolyte Li metal batteries\, we suppressed the Li dendrite growth and reduced the interface resistance by constructing a lithionphobic-lithiophoilic interlayer between solid electrolyte and Li metal anodes. The critical role of solid electrolyte interphase in accommodating electrode volume changes was also investigated.
URL:https://seasevents.nmsdev7.com/event/cbe-seminar-electrolytes-for-high-energy-li-ion-and-li-metal-batteries/
LOCATION:Wu and Chen Auditorium (Room 101)\, Levine Hall\, 3330 Walnut Street\, Philadelphia\, PA\, 19104\, United States
CATEGORIES:Seminar
ORGANIZER;CN="Chemical and Biomolecular Engineering":MAILTO:cbemail@seas.upenn.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20211007T121500
DTEND;TZID=America/New_York:20211007T133000
DTSTAMP:20260406T144921
CREATED:20210817T151734Z
LAST-MODIFIED:20210817T151734Z
UID:10006856-1633608900-1633613400@seasevents.nmsdev7.com
SUMMARY:MSE Seminar: "Metals and Alloys: A Critical Weapon in the Fight against Climate Change"
DESCRIPTION:Today in the U.S.\, we deal with the severe\, wide ranging effects of climate change from the West to East Coast in the form of heat waves\, drought\, wildfires\, and flooding. To end these disasters\, we need to drastically change the way we produce and use energy. For example\, in 2020\, over 72 % of the energy consumed in the U.S. came from burning natural gases (31.5 %)\, coal (9.21 %) and petroleum (32.2 %)\, [1] which are all major contributors to U.S. carbon pollution. Experts agree that we need to move away from fossil fuels and embrace renewable energy technologies. At present\, some of our most sophisticated renewable energy efforts involve the transition from coal and gasoline to Li-ion battery and hydrogen energy technologies. A fundamental problem with these solutions is the extremely low volumetric energy density of Li-ion batteries (blue marker in Fig. 1) and hydrogen fuel (red marker in Fig. 1) compared to coal and gasoline (grey markers in Fig. 1). [2] In addition\, Li-ion battery technology suffers from several drawbacks\, which Dr. Detsi will discuss in this talk\, alongside with the efforts of his group to mitigate these issues\, including the highly inefficient roll-to-roll battery manufacturing process and the poor cycle life of Li-ion batteries caused by a gradual degradation of electrode materials during (dis)charging. [3-5] Similarly\, the use of hydrogen as a fuel is hampered by the low scalability of sustainable hydrogen production methods\, the high costs and safety issues associated with hydrogen storage\, and the lack of hydrogen infrastructures nationwide. Thus\, hydrogen and metal-ion (such as Li-\, Na-\, K-\, and Mg-ion) battery technologies are obviously not suitable for grid scale and heavy-duty energy applications. \nAn alternative approach involves reversibly storing renewable energy in Earth-abundant metals (such as Al\, Mg\, and Fe) or metalloids (B\, Si). These materials exhibit much higher volumetric energy densities than coal and gasoline\, as shown by the green markers in Fig. 1. [2] Typically\, Fig. 1 reveals us that\, for a given fixed volume fuel\, burning Fe metal as a fuel will release twice as much energy as burning coal or gasoline; and burning Al metal will release three times as much energy as burning coal or gasoline.[2] By activating these metals through nanostructuring\, these materials can release energy through reaction with oxygen (i.e. dry metal fuel oxidation) or water (i.e. wet metal fuel oxidation). In this talk\, Dr. Detsi will discuss how we activate reactive metals like Al\, Mg\, and Zn using dealloying\, and use these metals to release energy in the form of heat and chemical bonds (hydrogen) through hydrolysis (i.e. wet metal fuel oxidation).[6-8] After energy is extracted through oxidation\, the solid reaction products in the form of metal (hydr)oxides can then be converted back into pure metals through reduction using sustainable energy resources such as hydropower\, solar power and wind power to enable a sustainable metal fuel economy.[2] In this talk\, he will also discuss the effort in his group to convert Al (hydr)oxide into metallic Al.[9]
URL:https://seasevents.nmsdev7.com/event/mse-seminar-metals-and-alloys-a-critical-weapon-in-the-fight-against-climate-change/
LOCATION:Auditorium\, LRSM Building\, 3231 Walnut Street\, Philadelphia\, PA\, 19104\, United States
ORGANIZER;CN="Materials Science and Engineering":MAILTO:johnruss@seas.upenn.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20211008T103000
DTEND;TZID=America/New_York:20211008T114500
DTSTAMP:20260406T144921
CREATED:20210930T172214Z
LAST-MODIFIED:20210930T172214Z
UID:10006920-1633689000-1633693500@seasevents.nmsdev7.com
SUMMARY:GRASP on Robotics: "Motion Planning for Autonomy: Successes and Challenges Ahead"
DESCRIPTION:The past two decades have witnessed incredible advances towards the design of autonomous systems. This talk will discuss the role of motion planning in yielding solutions for an agent that is able to execute a variety of tasks in a variety of settings. Problem decomposition has been and remains a difficult task\, and motion planning algorithms are today exploited for this purpose. Another critical step is to produce motion from high-level specifications. The specifications declare what the robot must do\, rather than how the task is to be done. In that realm\, motion planning principles guide the development of new frameworks that integrate advances in logical reasoning and program synthesis. The talk will discuss the work of my group in the above areas. \nJoin Zoom Webinar Here
URL:https://seasevents.nmsdev7.com/event/grasp-on-robotics-motion-planning-for-autonomy-successes-and-challenges-ahead/
LOCATION:Wu and Chen Auditorium (Room 101)\, Levine Hall\, 3330 Walnut Street\, Philadelphia\, PA\, 19104\, United States
CATEGORIES:Seminar
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