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DTSTART;TZID=America/New_York:20220729T120000
DTEND;TZID=America/New_York:20220729T140000
DTSTAMP:20260405T194621
CREATED:20220722T182303Z
LAST-MODIFIED:20220722T182303Z
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SUMMARY:BE Doctoral Dissertation Defense: "Designing Hyaluronic Acid Granular Hydrogels for Biomaterials Applications" (Victoria Grace Muir)
DESCRIPTION:The Department of Bioengineering at the University of Pennsylvania and Dr. Jason Burdick are pleased to announce the Doctoral Dissertation Defense of Victoria Grace Muir.\n\nTitle: Designing Hyaluronic Acid Granular Hydrogels for Biomaterials Applications\nDate: Friday\, July 29th\, 2022\nTime: 12pm ET\nLocation: John Morgan Building\, Class of 62 Auditorium\, 3620 Hamilton Walk\, Philadelphia\, PA 19104.\n\nThe public is welcome to attend.
URL:https://seasevents.nmsdev7.com/event/be-doctoral-dissertation-defense-designing-hyaluronic-acid-granular-hydrogels-for-biomaterials-applications-victoria-grace-muir/
LOCATION:Class of 62 Auditorium\, John Morgan Building\, 3620 Hamilton Walk\, Philadelphia\, PA\, 19104
CATEGORIES:Doctoral,Graduate,Student,Dissertation or Thesis Defense
ORGANIZER;CN="Bioengineering":MAILTO:be@seas.upenn.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20220729T120000
DTEND;TZID=America/New_York:20220729T130000
DTSTAMP:20260405T194621
CREATED:20220628T170005Z
LAST-MODIFIED:20220628T170005Z
UID:10007203-1659096000-1659099600@seasevents.nmsdev7.com
SUMMARY:Quantum Engineering Summer Seminar Series: Hannes Bernien\, PhD [trapped ion systems] (University of Chicago)
DESCRIPTION:About the Series: The Quantum Engineering Summer Seminar Series is hosted by the Quantum Engineering Graduate Association (QEGA) every Friday at 12:00 – 1:00 pm EDT throughout the summer months and will be followed by a separate Fall series. The series invites leading world leading experts across academia\, industry\, and government working on experimental\, theoretical\, and policy aspects of quantum science and engineering. Each seminar will be followed by a 10 minute networking session with the invited speaker. \nSpeaker List: \nJuly 8th\, 2022 – Jon Felbinger\, PhD [private-public partnerships] (Quantum Economic Development Consortium) \nJuly 15th\, 2022 – William Oliver\, PhD [superconducting qubits] (MIT and MIT Lincoln Labs) \nJuly 22nd\, 2022 – Sinead Griffin\, PhD [novel qubit materials design] (Lawrence Berkeley National Laboratory) \nJuly 29th\, 2022 – Hannes Bernien\, PhD [trapped ion systems] (University of Chicago) \nAugust 5th\, 2022 – Prineha Narang\, PhD [computational quantum dynamics] (Harvard University) \nAugust 12th\, 2022 – Peter McMahon\, PhD [quantum annealing] (Cornell University) \nAugust 19th\, 2022 – Nick Bronn\, PhD [NISQ era quantum computing] (IBM) \nAugust 26th\, 2022 – Riccardo Manenti\, PhD [scalable quantum computing systems] (Rigetti) \nMeeting Information: The seminar series will be a hybrid event with talks broadcasted on campus (Wu and Chen Auditorium\, Levine Hall) and available online via Zoom. The Zoom link will be posted weekly for each individual talk. \nJoin QEGA: The Quantum Engineering Graduate Association (QEGA) is a new organization at Penn founded by Nima Leclerc and Noah Johnson\, two Penn ESE PhD students in the Sigillito Group. QEGA’s goal is to increase graduate student and faculty engagement in quantum engineering at Penn through school-wide events such as this seminar series\, quantum-career networking opportunities\, and a quantum engineering outreach program program. If you would like to stay connected with us\, please email Nima at nleclerc@seas.upenn.edu with the subject line ‘qega listserv’ to get added to our mailing list!
URL:https://seasevents.nmsdev7.com/event/quantum-engineering-summer-seminar-series-hannes-bernien-phd-trapped-ion-systems-university-of-chicago/
LOCATION:https://upenn.zoom.us/j/96715197752
CATEGORIES:Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20220729T090000
DTEND;TZID=America/New_York:20220729T110000
DTSTAMP:20260405T194621
CREATED:20220722T181929Z
LAST-MODIFIED:20220722T181929Z
UID:10007217-1659085200-1659092400@seasevents.nmsdev7.com
SUMMARY:BE Doctoral Dissertation: "Fundamentals and Application of 3D Suspension Bath Bioprinting for the Engineering of Meniscal Tissue" (Margaret Prendergast)
DESCRIPTION:The Department of Bioengineering at the University of Pennsylvania and Dr. Jason Burdick are pleased to announce the Doctoral Dissertation Defense of Margaret Prendergast. \n\nTitle: Fundamentals and Application of 3D Suspension Bath Bioprinting for the Engineering of Meniscal Tissue\nDate: Friday\, July 29th\, 2022\nTime: 9 AM ET\nLocation: Towne Building\, Room 337\, 107 Towne Bldg\, Philadelphia PA 19104 \n(If you wish to join virtually\, Please reach out to Maggie (prendm@seas.upenn.edu) for zoom link and passcode.)
URL:https://seasevents.nmsdev7.com/event/be-doctoral-dissertation-fundamentals-and-application-of-3d-suspension-bath-bioprinting-for-the-engineering-of-meniscal-tissue-margaret-prendergast/
LOCATION:Room 337\, Towne Building\, 220 South 33rd Street\, Philadelphia\, PA\, 19104\, United States
CATEGORIES:Doctoral,Graduate,Student,Dissertation or Thesis Defense
ORGANIZER;CN="Bioengineering":MAILTO:be@seas.upenn.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20220726T100000
DTEND;TZID=America/New_York:20220726T113000
DTSTAMP:20260405T194621
CREATED:20220718T182441Z
LAST-MODIFIED:20220718T182441Z
UID:10007214-1658829600-1658835000@seasevents.nmsdev7.com
SUMMARY:MEAM Seminar: "Motion Planning for a Variable Topology Truss Robot"
DESCRIPTION:Variable Topology Trusses (VTTs) are a new type of modular\, self-reconfigurable robot (MSRR). Like other self-reconfigurable robot systems\, a VTT can change its shape to adapt to a variety of tasks\, offering a wider range of capabilities than a single robot configuration. While most MSRRs consist of robot modules that are connected in a chain or lattice architecture\, VTTs use a truss-based architecture instead. A VTT can be thought of as a variable geometry truss—a set of linear actuator modules that are connected together to form a rigid structure—with the additional ability to reconfigure by merging and splitting the truss nodes. This truss architecture gives improved structural efficiency and scalability\, but it presents unique challenges for motion planning and reconfiguration planning. \nIn this talk\, I will first introduce the Variable Topology Truss concept and show our recent progress on developing the robot hardware. Then\, I will present my work on motion planning for reconfiguration and shape morphing of VTTs. Traditional probabilistic motion planning techniques are ineffective because the collision constraints generate a configuration space with many narrow passageways and inaccessible regions. I will present a technique that guides a motion planner by leveraging the topological and knot-theoretic information embedded in a robot configuration.
URL:https://seasevents.nmsdev7.com/event/meam-seminar-motion-planning-for-a-variable-topology-truss-robot/
LOCATION:Towne 313\, 220 S. 33rd Street\, Philadelphia\, PA\, 19104\, United States
CATEGORIES:Seminar
ORGANIZER;CN="Mechanical Engineering and Applied Mechanics":MAILTO:meam@seas.upenn.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20220725T150000
DTEND;TZID=America/New_York:20220725T160000
DTSTAMP:20260405T194621
CREATED:20220711T194048Z
LAST-MODIFIED:20220711T194048Z
UID:10007212-1658761200-1658764800@seasevents.nmsdev7.com
SUMMARY:MEAM Ph.D. Thesis Defense: "The Design of a Community-Informed Socially Interactive Humanoid Robot and End-effectors for Novel Edge-Rolling"
DESCRIPTION:This dissertation discusses my work in building an HRI platform called Quori and my once separate now integrated work on a manipulation method that can enable robots like Quori\, or any more capable robot\, to move large circular cylindrical objects. \nQuori is a novel\, affordable\, socially interactive humanoid robot platform for facilitating noncontact human-robot interaction (HRI) research. The design of the system is motivated by feedback sampled from the HRI research community. The overall design maintains a balance of affordability and functionality. Ten Quori platforms have been awarded to a diverse group of researchers from across the United States to facilitate HRI research to build a community database from a common platform. \nThis dissertation concludes with a demonstration of Quori transporting a large cylinder for which Quori does not have the power to lift nor the range of motion to dexterously manipulate. Quori is able to achieve this otherwise insurmountable tasks through a novel robotic manipulation technique called robotic edge-rolling. Edge-rolling refers to transporting a cylindrical object by rolling on its circular edge\, as human workers maneuver a gas cylinder on the ground for example. This robotic edge-rolling is achieved by controlling the object to roll on the bottom edge in contact with the ground\, and to slide on the surface of the robot’s end-effector. It can thus be regarded as a form of robotic dexterous\, in-hand manipulation with nonprehensile grasps. This work mainly addresses the problem of grasp planning for edge-rolling by studying how to design appropriately shaped end-effectors with zero internal mobility and how to find feasible grasps for stably rolling the object with the simple end-effectors.
URL:https://seasevents.nmsdev7.com/event/meam-ph-d-thesis-defense-the-design-of-a-community-informed-socially-interactive-humanoid-robot-and-end-effectors-for-novel-edge-rolling/
LOCATION:Room 337\, Towne Building\, 220 South 33rd Street\, Philadelphia\, PA\, 19104\, United States
ORGANIZER;CN="Mechanical Engineering and Applied Mechanics":MAILTO:meam@seas.upenn.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20220725T120000
DTEND;TZID=America/New_York:20220725T130000
DTSTAMP:20260405T194621
CREATED:20220601T151235Z
LAST-MODIFIED:20220601T151235Z
UID:10007191-1658750400-1658754000@seasevents.nmsdev7.com
SUMMARY:Physical Sciences Onco-development Colloquium (PSOC): "From physics to therapeutics – An entrepreneurial journey across disciplines" (Kandaswamy Vijayan)
DESCRIPTION:Physical Sciences Onco-development Colloquium (PSOC) \nHybrid talk in Raisler Lounge and on Zoom (contact manu@seas.upenn.edu for the Zoom link).
URL:https://seasevents.nmsdev7.com/event/psocpenn-talk-tba-3/
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:20220722T120000
DTEND;TZID=America/New_York:20220722T130000
DTSTAMP:20260405T194621
CREATED:20220628T165814Z
LAST-MODIFIED:20220628T165814Z
UID:10007202-1658491200-1658494800@seasevents.nmsdev7.com
SUMMARY:Quantum Engineering Summer Seminar Series: Sinead Griffin\, PhD [novel qubit materials design] (Lawrence Berkeley National Laboratory)
DESCRIPTION:About the Series: The Quantum Engineering Summer Seminar Series is hosted by the Quantum Engineering Graduate Association (QEGA) every Friday at 12:00 – 1:00 pm EDT throughout the summer months and will be followed by a separate Fall series. The series invites leading world leading experts across academia\, industry\, and government working on experimental\, theoretical\, and policy aspects of quantum science and engineering. Each seminar will be followed by a 10 minute networking session with the invited speaker. \nSpeaker List: \nJuly 8th\, 2022 – Jon Felbinger\, PhD [private-public partnerships] (Quantum Economic Development Consortium) \nJuly 15th\, 2022 – William Oliver\, PhD [superconducting qubits] (MIT and MIT Lincoln Labs) \nJuly 22nd\, 2022 – Sinead Griffin\, PhD [novel qubit materials design] (Lawrence Berkeley National Laboratory) \nJuly 29th\, 2022 – Hannes Bernien\, PhD [trapped ion systems] (University of Chicago) \nAugust 5th\, 2022 – Prineha Narang\, PhD [computational quantum dynamics] (Harvard University) \nAugust 12th\, 2022 – Peter McMahon\, PhD [quantum annealing] (Cornell University) \nAugust 19th\, 2022 – Nick Bronn\, PhD [NISQ era quantum computing] (IBM) \nAugust 26th\, 2022 – Riccardo Manenti\, PhD [scalable quantum computing systems] (Rigetti) \nMeeting Information: The seminar series will be a hybrid event with talks broadcasted on campus (Wu and Chen Auditorium\, Levine Hall) and available online via Zoom. The Zoom link will be posted weekly for each individual talk. \nJoin QEGA: The Quantum Engineering Graduate Association (QEGA) is a new organization at Penn founded by Nima Leclerc and Noah Johnson\, two Penn ESE PhD students in the Sigillito Group. QEGA’s goal is to increase graduate student and faculty engagement in quantum engineering at Penn through school-wide events such as this seminar series\, quantum-career networking opportunities\, and a quantum engineering outreach program program. If you would like to stay connected with us\, please email Nima at nleclerc@seas.upenn.edu with the subject line ‘qega listserv’ to get added to our mailing list!
URL:https://seasevents.nmsdev7.com/event/quantum-engineering-summer-seminar-series-sinead-griffin-phd-novel-qubit-materials-design-lawrence-berkeley-national-laboratory/
LOCATION:https://upenn.zoom.us/j/96715197752
CATEGORIES:Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20220721T130000
DTEND;TZID=America/New_York:20220721T150000
DTSTAMP:20260405T194621
CREATED:20220718T132329Z
LAST-MODIFIED:20220718T132329Z
UID:10007213-1658408400-1658415600@seasevents.nmsdev7.com
SUMMARY:BE Doctoral Dissertation: "Rapid\, scalable\, amplified RNA detection in situ with clampFISH 2.0" (Ian Dardani)
DESCRIPTION:The Department of Bioengineering at the University of Pennsylvania and Dr. Arjun Raj are pleased to announce the Doctoral Dissertation Defense of Ian Dardani.\n\nTitle: “Rapid\, scalable\, amplified RNA detection in situ with clampFISH 2.0″\n\n\nDate: Thursday\, July 21\, 2022\nTime: 1pm ET\n\nAdd to Google Calendar\nLocation: In-person: Smilow Center for Translational Research\, Room 09-146\nZoom: https://upenn.zoom.us/j/94182106925
URL:https://seasevents.nmsdev7.com/event/be-doctoral-dissertation-rapid-scalable-amplified-rna-detection-in-situ-with-clampfish-2-0-ian-dardani/
LOCATION:Smilow Center for Translational Research\, Room 09-146
CATEGORIES:Doctoral,Graduate,Student,Dissertation or Thesis Defense
ORGANIZER;CN="Bioengineering":MAILTO:be@seas.upenn.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20220719T100000
DTEND;TZID=America/New_York:20220719T113000
DTSTAMP:20260405T194621
CREATED:20220707T200712Z
LAST-MODIFIED:20220707T200712Z
UID:10007211-1658224800-1658230200@seasevents.nmsdev7.com
SUMMARY:MEAM Seminar: "Modboats: Building an Aquatic Modular Self-Reconfigurable Robotic System out of Underactuated Modules"
DESCRIPTION:Modular robots offer the promise of flexibility; we will be able to deploy teams of generalist modules and reconfigure them into various specialists to perform whatever task is necessary. Surface swimming aquatic modular robots in particular are not well studied\, however\, because the literature assumes that the modules need to be holonomic\, which makes them expensive and difficult to build and maintain. We disrupt this assumption with the Modboat – an inexpensive\, underactuated surface swimmer that uses only one motor to propel and steer itself along the ocean surface\, and is capable of all the behaviors required of a modular self-reconfigurable robotic system (MSRR). In this seminar\, I present my work on designing the Modboat modules\, achieving near holonomic motion capabilities using temporal multiplexing\, and developing the capabilities needed for modular self-reconfiguration.
URL:https://seasevents.nmsdev7.com/event/meam-seminar-modboats-building-an-aquatic-modular-self-reconfigurable-robotic-system-out-of-underactuated-modules/
LOCATION:Towne 313\, 220 S. 33rd Street\, Philadelphia\, PA\, 19104\, United States
CATEGORIES:Seminar
ORGANIZER;CN="Mechanical Engineering and Applied Mechanics":MAILTO:meam@seas.upenn.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20220718T120000
DTEND;TZID=America/New_York:20220718T130000
DTSTAMP:20260405T194621
CREATED:20220601T150747Z
LAST-MODIFIED:20220601T150747Z
UID:10007188-1658145600-1658149200@seasevents.nmsdev7.com
SUMMARY:PSOC@Penn Talk: David Basanta Gutierrez & Conor C. Lynch (Moffit Cancer Center)
DESCRIPTION:Contact manu@seas.upenn.edu for the Zoom link.
URL:https://seasevents.nmsdev7.com/event/psocpenn-talk-david-basanta-gutierrez-conor-c-lynch-moffit-cancer-center/
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:20220715T120000
DTEND;TZID=America/New_York:20220715T130000
DTSTAMP:20260405T194621
CREATED:20220628T165440Z
LAST-MODIFIED:20220628T165440Z
UID:10007201-1657886400-1657890000@seasevents.nmsdev7.com
SUMMARY:Quantum Engineering Summer Seminar Series: William Oliver\, PhD [superconducting qubits] (MIT and MIT Lincoln Labs)
DESCRIPTION:About the Series: The Quantum Engineering Summer Seminar Series is hosted by the Quantum Engineering Graduate Association (QEGA) every Friday at 12:00 – 1:00 pm EDT throughout the summer months and will be followed by a separate Fall series. The series invites leading world leading experts across academia\, industry\, and government working on experimental\, theoretical\, and policy aspects of quantum science and engineering. Each seminar will be followed by a 10 minute networking session with the invited speaker. \nSpeaker List: \nJuly 8th\, 2022 – Jon Felbinger\, PhD [private-public partnerships] (Quantum Economic Development Consortium) \nJuly 15th\, 2022 – William Oliver\, PhD [superconducting qubits] (MIT and MIT Lincoln Labs) \nJuly 22nd\, 2022 – Sinead Griffin\, PhD [novel qubit materials design] (Lawrence Berkeley National Laboratory) \nJuly 29th\, 2022 – Hannes Bernien\, PhD [trapped ion systems] (University of Chicago) \nAugust 5th\, 2022 – Prineha Narang\, PhD [computational quantum dynamics] (Harvard University) \nAugust 12th\, 2022 – Peter McMahon\, PhD [quantum annealing] (Cornell University) \nAugust 19th\, 2022 – Nick Bronn\, PhD [NISQ era quantum computing] (IBM) \nAugust 26th\, 2022 – Riccardo Manenti\, PhD [scalable quantum computing systems] (Rigetti) \nMeeting Information: The seminar series will be a hybrid event with talks broadcasted on campus (Wu and Chen Auditorium\, Levine Hall) and available online via Zoom. The Zoom link will be posted weekly for each individual talk. \nJoin QEGA: The Quantum Engineering Graduate Association (QEGA) is a new organization at Penn founded by Nima Leclerc and Noah Johnson\, two Penn ESE PhD students in the Sigillito Group. QEGA’s goal is to increase graduate student and faculty engagement in quantum engineering at Penn through school-wide events such as this seminar series\, quantum-career networking opportunities\, and a quantum engineering outreach program program. If you would like to stay connected with us\, please email Nima at nleclerc@seas.upenn.edu with the subject line ‘qega listserv’ to get added to our mailing list!
URL:https://seasevents.nmsdev7.com/event/quantum-engineering-summer-seminar-series-william-oliver-phd-superconducting-qubits-mit-and-mit-lincoln-labs/
LOCATION:Wu and Chen Auditorium (Room 101)\, Levine Hall\, 3330 Walnut Street\, Philadelphia\, PA\, 19104\, United States
CATEGORIES:Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20220714T123000
DTEND;TZID=America/New_York:20220714T143000
DTSTAMP:20260405T194621
CREATED:20220617T153612Z
LAST-MODIFIED:20220617T153612Z
UID:10007198-1657801800-1657809000@seasevents.nmsdev7.com
SUMMARY:ESE Ph.D. Thesis Defense: "Creating dynamical robots of different morphologies and sizes through automatic origami design"
DESCRIPTION:Origami robots are machines whose morphologies and functions are created by folding locally flat sheets. This thesis makes three contributions to the design and fabrication of origami robots aimed at the development of an automated computational pipeline for the specification and construction of widely different morphologies and body sizes capable of highly dynamic operation. The initial contribution recruits recent advances in the design of compliant folded structures to build the first soft robots that exhibit highly dynamic behavior. Specifically\, the proof-of-concept robots reported here achieve their juggling and hopping behaviors by actuating their origami springs as power-cascading devices. Second\, this thesis advances the origami design literature by automating the construction of compliant origami kinematic chains. The “Kinegami” algorithm reported here accepts a Denavit-Hartenberg kinematic specification and uses a catalog of tunably compliant origami modules to generate a crease pattern that folds into the prescribed serial robot mechanism. Finally\, the thesis addresses the problem of scalability in general (not just origami) robot design by studying the simultaneous interaction of structural integrity and actuator affordance. Four contrasting abstract task domains impose different scaling criteria that reveal the relative advantages and disadvantages of three distinct structural principles combined with three different actuator types. For example\, applying the unloaded dynamic task criterion to a direct drive actuation type reveals that the origami-style shell structure supports superior length scale-up. An accompanying empirical study confirms that structural alternatives cannot achieve a one-degree-of-freedom hopping task at the same five-fold scale-up of the original hopper design exhibited by the shell structure design. \nConsidered in isolation\, these contributions advance\, respectively\, the recent soft robotics literature\, the older origami design literature\, and the traditional engineering scaling literature. Considered together\, they advance the agenda for the rapid\, computer-assisted design of customized\, high-performance robots.
URL:https://seasevents.nmsdev7.com/event/ese-ph-d-thesis-defense-creating-dynamical-robots-of-different-morphologies-and-sizes-through-automatic-origami-design/
LOCATION:Levine 307\, 3330 Walnut Street\, Philadelphia\, PA\, 19104\, United States
CATEGORIES:Dissertation or Thesis Defense
ORGANIZER;CN="Electrical and Systems Engineering":MAILTO:eseevents@seas.upenn.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20220714T100000
DTEND;TZID=America/New_York:20220714T120000
DTSTAMP:20260405T194621
CREATED:20220630T202745Z
LAST-MODIFIED:20220630T202745Z
UID:10007210-1657792800-1657800000@seasevents.nmsdev7.com
SUMMARY:ESE Ph.D. Thesis Defense: "Learning Environmental Models with Multi-Robot Teams Using a Dynamical Systems Approach"
DESCRIPTION:Robots have the capability to sense and track natural phenomena for environmental monitoring\, deepening our understanding of the world. Robotic modeling of such phenomena is essential to operating in complex environments\, allowing robots to perform in more realistic scenarios. Thus\, representing complex environments is paramount to the success of multi-robot teams. While considerable efforts have been made for modeling with multi-robot teams\, specifically in coordination and distributed methods\, these techniques have limitations in spatiotemporal\, complex environments. These environments can be vastly different\, such as fluid flows\, oceans\, and space. Robots operating in these environments typically create representations of their surroundings using computationally expensive techniques or by leveraging human expert knowledge. \nInterestingly\, though these environmental processes may seem unrelated\, they can all be analyzed with dynamical systems theory. This thesis presents methods for representing the environment as a dynamical system with machine learning techniques. We formulate machine learning methods that lend to data-driven modeling of the phenomena for robotic applications\, specifically using dimensionality reduction techniques and kernel methods. The data-driven modeling explicitly leverages theoretical foundations of dynamical systems theory. Dynamical systems theory offers mathematical and physically interpretable intuitions about the environmental representation. The procedures presented include distributed algorithms\, online adaptation\, uncertainty quantification\, and feature extraction to allow for the actualization of these techniques on-board robots. The environmental representations guide robot behavior in developing strategies such as optimal sensing and energy-efficient navigation. The methods and procedures provided in this thesis were verified across prototypical environments and on experimental robots.
URL:https://seasevents.nmsdev7.com/event/ese-ph-d-thesis-defense-learning-environmental-models-with-multi-robot-teams-using-a-dynamical-systems-approach/
LOCATION:PERCH 303\, Pennovation 3rd Floor\, 3401 Grays Ferry Avenue\, Bldg 6176\, Philadelphia\, PA\, 19146\, United States
CATEGORIES:Dissertation or Thesis Defense
ORGANIZER;CN="Electrical and Systems Engineering":MAILTO:eseevents@seas.upenn.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20220713T100000
DTEND;TZID=America/New_York:20220713T110000
DTSTAMP:20260405T194621
CREATED:20220629T144235Z
LAST-MODIFIED:20220629T144235Z
UID:10007208-1657706400-1657710000@seasevents.nmsdev7.com
SUMMARY:ESE Ph.D. Thesis Defense: "Optical and Spin Dynamics of Quantum Emitters in Hexagonal Boron Nitride at Room Temperature"
DESCRIPTION:Hexagonal boron nitride (h-BN) is a van der Waals material that hosts defect-based quantum emitters (QEs) at room temperature\, providing an unparalleled platform for realizing devices for quantum technologies and studying light-matter interactions. Recent observations suggest the existence of multiple distinct defect structures responsible for QEs. Theoretical proposals suggest vacancies\, substitutional atoms\, and their complexes as likely defect candidates. However\, experimental identification of the QEs’ electronic structure is lacking\, and key details of the QEs’ charge and spin properties remain unknown. This thesis focuses on understanding the optical and spin dynamics of QEs in h-BN at room temperature. Starting with the motivation for studying quantum systems and QEs\, this thesis introduces QEs in h-BN and discusses its current understanding. Next\, it discusses the materials and methods developed and utilized during the course of this thesis. Next\, it discusses the optical dynamics acquired using photoluminescence spectroscopy and photon emission correlation spectroscopy (PECS) and shows several QEs exhibit pure single-photon emission. It discusses the complex optical dynamics associated with excitation and relaxation through multiple electronic excited states – revealed by PECS and polarization-resolved excitation and emission. Following\, it presents the optical dynamics simulations of electronic structure models that are consistent with the observations\, and discusses the results in the context of ab initio theoretical calculations. Next\, it discusses magnetic-field-dependent PECS that can be used as a framework to probe the presence of single spins that are otherwise elusive. Following\, it presents detection and confirmation of single-spin using optically detected magnetic resonance. Finally\, it discusses the spin dynamics and time-domain measurements acquired using optical and microwave pulse protocols crucial to developing methods to coherently control the QE’s spin. To conclude\, it discusses the future directions that can help identify the chemical nature of QEs in h-BN and establish it as a scalable material platform for quantum technologies.
URL:https://seasevents.nmsdev7.com/event/ese-ph-d-thesis-defense-optical-and-spin-dynamics-of-quantum-emitters-in-hexagonal-boron-nitride-at-room-temperature/
LOCATION:Raisler Lounge (Room 225)\, Towne Building\, 220 South 33rd Street\, Philadelphia\, PA\, 19104\, United States
CATEGORIES:Dissertation or Thesis Defense
ORGANIZER;CN="Electrical and Systems Engineering":MAILTO:eseevents@seas.upenn.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20220712T100000
DTEND;TZID=America/New_York:20220712T113000
DTSTAMP:20260405T194621
CREATED:20220630T131730Z
LAST-MODIFIED:20220630T131730Z
UID:10007209-1657620000-1657625400@seasevents.nmsdev7.com
SUMMARY:MEAM Seminar: "Sedimentation of Active Suspensions: Hindrance and Phase-separation"
DESCRIPTION:Sedimentation of active matter is found in many natural and industrial processes. It plays an important role on the distribution of plankton in oceans\, which is key part of the carbon cycle (i.e. ocean’s biological pump) that transports carbon from the ocean’s surface to depth. In this seminar\, I will present an investigation on the dynamics of the sedimentation of spherical colloids in presence of swimming microorganisms at various concentration within the dilute regime. In the first part of this talk\, I will show how bacterial activity hinders the sedimentation speeds of passive particle. These results can be described by an advection-diffusion equation with an added population dynamics term. In the second part of this talk\, I will show the appearance of two sedimentation fronts\, particle and bacterial. Even passive systems of poly-dispersed (by size) particles are known to show segregating sedimentation fronts; larger (and faster) settling particles will separate from smaller (and slower) ones\, given enough time. Here\, I will show how the increase of activity affects sedimentation speeds and the timescales associated with the appearance of the bacteria front. These timescales associated with the second front leads to a phenomenological model that captures the sedimentation of passive particles in active fluids.
URL:https://seasevents.nmsdev7.com/event/meam-seminar-sedimentation-of-active-suspensions-hindrance-and-phase-separation/
LOCATION:Towne 313\, 220 S. 33rd Street\, Philadelphia\, PA\, 19104\, United States
CATEGORIES:Seminar
ORGANIZER;CN="Mechanical Engineering and Applied Mechanics":MAILTO:meam@seas.upenn.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20220711T120000
DTEND;TZID=America/New_York:20220711T130000
DTSTAMP:20260405T194621
CREATED:20220601T150235Z
LAST-MODIFIED:20220601T150235Z
UID:10007187-1657540800-1657544400@seasevents.nmsdev7.com
SUMMARY:PSOC@Penn: “Fat accumulation induces heterogeneous regions of softness in fatty liver” (David Li)
DESCRIPTION:Contact manu@seas.upenn.edu for the Zoom link.
URL:https://seasevents.nmsdev7.com/event/psocpenn-fat-accumulation-induces-heterogeneous-regions-of-softness-in-fatty-liver-david-li/
LOCATION:Raisler Lounge (Room 225)\, Towne Building\, 220 South 33rd Street\, Philadelphia\, PA\, 19104\, United States
CATEGORIES:Seminar,Postdoctoral
ORGANIZER;CN="PSOC":MAILTO:manu@seas.upenn.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20220708T120000
DTEND;TZID=America/New_York:20220708T130000
DTSTAMP:20260405T194621
CREATED:20220628T164921Z
LAST-MODIFIED:20220628T164921Z
UID:10007200-1657281600-1657285200@seasevents.nmsdev7.com
SUMMARY:Quantum Engineering Summer Seminar Series: Jon Felbinger\, PhD [private-public partnerships] (Quantum Economic Development Consortium)
DESCRIPTION:About the Series: The Quantum Engineering Summer Seminar Series is hosted by the Quantum Engineering Graduate Association (QEGA) every Friday at 12:00 – 1:00 pm EDT throughout the summer months and will be followed by a separate Fall series. The series invites leading world leading experts across academia\, industry\, and government working on experimental\, theoretical\, and policy aspects of quantum science and engineering. Each seminar will be followed by a 10 minute networking session with the invited speaker. \nSpeaker List: \nJuly 8th\, 2022 – Jon Felbinger\, PhD [private-public partnerships] (Quantum Economic Development Consortium) \nJuly 15th\, 2022 – William Oliver\, PhD [superconducting qubits] (MIT and MIT Lincoln Labs) \nJuly 22nd\, 2022 – Sinead Griffin\, PhD [novel qubit materials design] (Lawrence Berkeley National Laboratory) \nJuly 29th\, 2022 – Hannes Bernien\, PhD [trapped ion systems] (University of Chicago) \nAugust 5th\, 2022 – Prineha Narang\, PhD [computational quantum dynamics] (Harvard University) \nAugust 12th\, 2022 – Peter McMahon\, PhD [quantum annealing] (Cornell University) \nAugust 19th\, 2022 – Nick Bronn\, PhD [NISQ era quantum computing] (IBM) \nAugust 26th\, 2022 – Riccardo Manenti\, PhD [scalable quantum computing systems] (Rigetti) \nMeeting Information: The seminar series will be a hybrid event with talks broadcasted on campus (Wu and Chen Auditorium\, Levine Hall) and available online via Zoom. The Zoom link will be posted weekly for each individual talk. \nJoin QEGA: The Quantum Engineering Graduate Association (QEGA) is a new organization at Penn founded by Nima Leclerc and Noah Johnson\, two Penn ESE PhD students in the Sigillito Group. QEGA’s goal is to increase graduate student and faculty engagement in quantum engineering at Penn through school-wide events such as this seminar series\, quantum-career networking opportunities\, and a quantum engineering outreach program program. If you would like to stay connected with us\, please email Nima at nleclerc@seas.upenn.edu with the subject line ‘qega listserv’ to get added to our mailing list!
URL:https://seasevents.nmsdev7.com/event/quantum-engineering-summer-seminar-series-jon-felbinger-phd-private-public-partnerships-quantum-economic-development-consortium/
LOCATION:Wu and Chen Auditorium (Room 101)\, Levine Hall\, 3330 Walnut Street\, Philadelphia\, PA\, 19104\, United States
CATEGORIES:Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20220705T100000
DTEND;TZID=America/New_York:20220705T233000
DTSTAMP:20260405T194621
CREATED:20220621T183437Z
LAST-MODIFIED:20220621T183437Z
UID:10007199-1657015200-1657063800@seasevents.nmsdev7.com
SUMMARY:MEAM Seminar: "Mixing with Activity: Transport of Swimming Microorganisms in Complex Flows"
DESCRIPTION:How will swimming microorganisms affect the mixing of a diffusive contaminant in chaotic flows? Answers to this question can lead to improved understanding of the spread of pollutants (e.g. algal blooms) in oceans and lakes\, as well as potentially useful applications in biofuel and vaccine productions. In this talk\, I present recent experiments on the chaotic mixing of a passive pollutant in dilute suspensions of swimming Escherichia coli. I will first discuss the results in a two-dimensional (2D) time-periodic flow that preserves spatial symmetry. Second\, I will extend these results to a more realistic case of spatially disordered 2D vortical flows that resemble geological flows in nature. Overall\, these results show that the interaction between active swimming particles and dynamical structures of the flow (i.e. Lagrangian coherent structures) can lead to profound changes in the transport and mixing of passive scalar quantities.
URL:https://seasevents.nmsdev7.com/event/meam-seminar-mixing-with-activity-transport-of-swimming-microorganisms-in-complex-flows/
LOCATION:Towne 313\, 220 S. 33rd Street\, Philadelphia\, PA\, 19104\, United States
CATEGORIES:Seminar
ORGANIZER;CN="Mechanical Engineering and Applied Mechanics":MAILTO:meam@seas.upenn.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20220628T100000
DTEND;TZID=America/New_York:20220628T110000
DTSTAMP:20260405T194621
CREATED:20220614T175156Z
LAST-MODIFIED:20220614T175156Z
UID:10007195-1656410400-1656414000@seasevents.nmsdev7.com
SUMMARY:MEAM Ph.D. Thesis Defense: "Enhancing Strength and Toughness Via Reinforcement with Nanocellulose Fibers"
DESCRIPTION:Cellulose nanofibrils (CNFs) are a nanomaterial obtained from plant sources and have excellent mechanical properties\, high aspect ratios\, and are biodegradable. As a reinforcing phase\, CNFs have the potential to improve the mechanical properties of polymer materials. The overarching objective of this thesis is to investigate the use of CNFs to enhance the strength and toughness of polymers and traditional papers. \nIn the first part of this thesis\, poly methyl methacrylate (PMMA) fibers are reinforced using CNFs to increase the strength and toughness. Fourier transform infrared (FTIR) spectroscopy is used to measure PMMA molecular orientation in the composite fibers. Tensile tests and fiber-based fracture tests using edge-cracked fibers are used to quantify the enhancement of modulus\, strength\, and fracture toughness through the addition of CNFs to PMMA. Specifically\, a 2 improvement in fracture toughness is observed at 1% wt. CNF content. \nIn the second part of the thesis\, filter paper\, which is a network of microscale cellulose fibers is infiltrated with CNFs to create all-cellulose sheets with heterogenous mechanical properties. This is realized by printing and subsequent drying of an aqueous CNF solution and patterning of the infiltrated regions is used to engineer the strength and toughness of the materials. Single edge notch tension (SENT) tests are performed on the specimens to evaluate their fracture behavior. It is shown that geometric and elastic heterogeneity can be utilized to tune the toughness over a large range while maintaining or improving the strength. \nFinally\, to overcome limitations of the SENT\, a new experimental fracture specimen\, denoted the hinged rigid beam (HRB)\, was developed. The HRB eliminates the compressive stresses developed in conventional beam-bending fracture tests like the double cantilever beam method\, thus making it suitable for testing thin materials such as paper. A mechanics model of the HRB was developed to allow critical strain energy release rate to be calculated from the measured force-displacement response and the specimen was validated via finite element analysis and experiments on thin PMMA sheets. This technique was used to characterize the toughness of several materials\, including filter paper\, copy paper and 2D lattice materials. Finally\, the HRB was used to characterize and further understand the fracture behavior of patterned nanocellulose infiltrated sheets.
URL:https://seasevents.nmsdev7.com/event/meam-ph-d-thesis-defense-enhancing-strength-and-toughness-via-reinforcement-with-nanocellulose-fibers/
LOCATION:Room 337\, Towne Building\, 220 South 33rd Street\, Philadelphia\, PA\, 19104\, United States
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:20220627T120000
DTEND;TZID=America/New_York:20220627T130000
DTSTAMP:20260405T194621
CREATED:20220601T145938Z
LAST-MODIFIED:20220601T145938Z
UID:10007186-1656331200-1656334800@seasevents.nmsdev7.com
SUMMARY:PSOC@Penn Talk: "Microtechnology-based Single Cell and EV Profiling” (Jina Ko)
DESCRIPTION:Contact manu@seas.upenn.edu for the Zoom link.
URL:https://seasevents.nmsdev7.com/event/psocpenn-talk-microtechnology-based-single-cell-and-ev-profiling-jina-ko/
LOCATION:Room 337\, Towne Building\, 220 South 33rd Street\, Philadelphia\, PA\, 19104\, United States
CATEGORIES:Seminar,Faculty
ORGANIZER;CN="PSOC":MAILTO:manu@seas.upenn.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20220627T100000
DTEND;TZID=America/New_York:20220627T120000
DTSTAMP:20260405T194621
CREATED:20220518T184309Z
LAST-MODIFIED:20220518T184309Z
UID:10007182-1656324000-1656331200@seasevents.nmsdev7.com
SUMMARY:ESE Ph.D. Thesis Defense: "Machine Learning on Large-Scale Graphs"
DESCRIPTION:Graph neural networks (GNNs) are successful at learning representations from most types of network data but suffer from limitations in large graphs\, which do not have the Euclidean structure that time and image signals have in the limit. Yet\, large graphs can often be identified as being similar to each other in the sense that they share structural properties. Indeed\, graphs can be grouped in families converging to a common graph limit — the graphon. A graphon is a bounded symmetric kernel which can be interpreted as both a random graph model and a limit object of a convergent sequence of graphs. Graphs sampled from a graphon almost surely share structural properties in the limit\, which implies that graphons describe families of similar graphs. We can thus expect that processing data supported on graphs associated with the same graphon should yield similar results. In my research\, I formalize this intuition by showing that the error made when transferring a GNN across two graphs in a graphon family is small when the graphs are sufficiently large. This enables large-scale graph machine learning by transference: training GNNs on moderate-scale graphs and executing them on large-scale graphs.
URL:https://seasevents.nmsdev7.com/event/ese-ph-d-thesis-defense-machine-learning-on-large-scale-graphs/
LOCATION:Room 452 C\, 3401 Walnut\, 3401 Walnut Street\, Philadelphia\, PA\, 19104\, United States
CATEGORIES:Seminar,Dissertation or Thesis Defense
ORGANIZER;CN="Electrical and Systems Engineering":MAILTO:eseevents@seas.upenn.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20220622T120000
DTEND;TZID=America/New_York:20220622T130000
DTSTAMP:20260405T194621
CREATED:20220616T144838Z
LAST-MODIFIED:20220616T144838Z
UID:10007197-1655899200-1655902800@seasevents.nmsdev7.com
SUMMARY:CT3N Seminar: "Design of Targeted Antimicrobials" (Christopher A. Alabi)
DESCRIPTION:This hybrid seminar is hosted by the Center for Targeted Therapeutics and Translational Nanomedicine (CT3N)\n\nJoin Zoom Meeting\nhttps://pennmedicine.zoom.us/j/93635057985?pwd=S200Sk9ONHZySm8zRUhvNWp0bEpldz09\n \nMeeting ID: 936 3505 7985\nPasscode: 06222022\n \n \nOne tap mobile\n+13017158592\,\,93635057985# US (Washington DC)\n+13126266799\,\,93635057985# US (Chicago)\n \nDial by your location\n+1 301 715 8592 US (Washington DC)\n+1 312 626 6799 US (Chicago)\n+1 929 205 6099 US (New York)\n+1 253 215 8782 US (Tacoma)\n+1 346 248 7799 US (Houston)\n+1 669 900 6833 US (San Jose)\nMeeting ID: 936 3505 7985\nFind your local number: https://pennmedicine.zoom.us/u/aI802pUrP
URL:https://seasevents.nmsdev7.com/event/ct3n-seminar-design-of-targeted-antimicrobials-christopher-a-alabi/
LOCATION:Smilow 10th Floor\, Room 146AB
CATEGORIES:Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20220621T120000
DTEND;TZID=America/New_York:20220621T130000
DTSTAMP:20260405T194621
CREATED:20220601T151057Z
LAST-MODIFIED:20220601T151057Z
UID:10007190-1655812800-1655816400@seasevents.nmsdev7.com
SUMMARY:PSOC@Penn Talk “Small fat droplets are sufficiently rigid to indent a nucleus\, dilute the lamina\, and cause rupture" (Irena Ivanoska)
DESCRIPTION:Contact manu@seas.upenn.edu for the Zoom link. \nTitle: “Small fat droplets are sufficiently rigid to indent a nucleus\, dilute the lamina\, and cause rupture”
URL:https://seasevents.nmsdev7.com/event/psocpenn-talk-tba-2/
LOCATION:Room 337\, 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:20220621T100000
DTEND;TZID=America/New_York:20220621T113000
DTSTAMP:20260405T194621
CREATED:20220614T183413Z
LAST-MODIFIED:20220614T183413Z
UID:10007196-1655805600-1655811000@seasevents.nmsdev7.com
SUMMARY:MEAM Seminar: "Mobile Wireless Infrastructure on Demand in Robot Teams"
DESCRIPTION:The promise of multi-robot systems is that they can complete tasks quicker and more efficiently than a single robot. However\, such performance gains are only realized if robots can communicate with each other and coordinate their actions. As on-board autonomy advances\, robots are increasingly being deployed in environments without existing wireless infrastructure and must rely instead on peer-to-peer or ad-hoc networks in order to exchange information. In these scenarios\, control actions taken to complete the task objective often move robots out of direct communication range of one another\, introducing a tension between task fulfillment and communication network maintenance. In this seminar\, I will present my work towards eliminating this tension and enabling multi-robot teams to operate in challenging environments by using robots as mobile wireless infrastructure.
URL:https://seasevents.nmsdev7.com/event/meam-seminar-mobile-wireless-infrastructure-on-demand-in-robot-teams/
LOCATION:Towne 313\, 220 S. 33rd Street\, Philadelphia\, PA\, 19104\, United States
CATEGORIES:Seminar
ORGANIZER;CN="Mechanical Engineering and Applied Mechanics":MAILTO:meam@seas.upenn.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20220617T120000
DTEND;TZID=America/New_York:20220617T130000
DTSTAMP:20260405T194621
CREATED:20220510T134909Z
LAST-MODIFIED:20220510T134909Z
UID:10007175-1655467200-1655470800@seasevents.nmsdev7.com
SUMMARY:Department of Bioengineering 2022 Juneteenth Address: "Perspectives on Diversity\, Equity and Inclusion Through a Rehabilitation\, Medicine and Robotics Research Lens" (Dr. Michelle Johnson)
DESCRIPTION:Join the Department of Bioengineering for a Juneteenth Address delivered by Dr. Michelle Johnson\, Associate Professor in Physical Medicine and Rehabilitation and in Bioengineering and Director of the Rehabilitation Robotics Lab. The address will be followed by a Q&A. This hybrid event will be held live on campus and on Zoom and is open to the entire Penn Bioengineering community. \nRoom: Towne 337 \nFor Zoom link & passcode\, check email or contact ksas@seas.upenn.edu.
URL:https://seasevents.nmsdev7.com/event/department-of-bioengineering-2022-juneteenth-address-perspectives-on-diversity-equity-and-inclusion-through-a-rehabilitation-medicine-and-robotics-research-lens-dr-michelle-johnson/
LOCATION:Room 337\, Towne Building\, 220 South 33rd Street\, Philadelphia\, PA\, 19104\, United States
CATEGORIES:Seminar,Faculty,Diversity, Equity and Inclusion
ORGANIZER;CN="Bioengineering":MAILTO:be@seas.upenn.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20220615T110000
DTEND;TZID=America/New_York:20220615T120000
DTSTAMP:20260405T194621
CREATED:20220110T153029Z
LAST-MODIFIED:20220110T153029Z
UID:10007004-1655290800-1655294400@seasevents.nmsdev7.com
SUMMARY:CEMB Future Leaders: "Sensing the force from within: the nucleus as regulator of migration plasticity"
DESCRIPTION:Launched in May 2021\, the Future Leaders in Mechanobiology is a monthly seminar series featuring up-and-coming leaders in mechanobiology–PhD students and postdocs from a wide range of fields\, backgrounds\, and institutions. By providing an international stage to share one’s work and opportunities to interact with researchers at all career stages\, we aim to create an inclusive and valuable series for early-stage researchers and the mechanobiology community as a whole. \nRegister HERE for access to the Zoom link and visit the CEMB website for more information.
URL:https://seasevents.nmsdev7.com/event/cemb-future-leaders-sensing-the-force-from-within-the-nucleus-as-regulator-of-migration-plasticity/
LOCATION:https://upenn.zoom.us/j/96715197752
ORGANIZER;CN="Center for Engineering MechanoBiology (CEMB)":MAILTO:annjeong@seas.upenn.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20220614T150000
DTEND;TZID=America/New_York:20220614T170000
DTSTAMP:20260405T194621
CREATED:20220608T180916Z
LAST-MODIFIED:20220608T180916Z
UID:10007194-1655218800-1655226000@seasevents.nmsdev7.com
SUMMARY:MSE Ph.D. Defense: "Understanding the Fracture Behavior of Polymer-infiltrated Nanoparticle Films" (Yiwei Qiang)
DESCRIPTION:Abstract:\nPolymer-infiltrated nanoparticle films (PINFs) are a new class of polymer nanocomposites that overcome many of the challenges in manufacturing highly loaded nanocomposite films (PNCFs). PINFs have a wide range of applications as functional coatings and membranes and have excellent mechanical properties\, including high stiffness\, hardness\, scratch and wear resistance. Fracture toughness is another critical mechanical property that plays an important role in the durability and reliability of PINFs. Establishing a fundamental understanding of the fracture behavior of PINFs is crucial to the design of damage tolerant PINFs. \nIn this work\, the effect of particle shape\, confinement\, and polymer-nanoparticle (NP) interactions on the fracture behavior of PINFs is investigated. The results show that well-aligned\, high aspect ratio (AR) nanoplatelet films have significantly higher fracture toughness and larger enhancement in modulus\, hardness and scratch resistance upon polymer infiltration than low AR NP films. Using a thin-film fracture testing method based on the double cantilever beam specimen\, the role of confinement on fracture toughness is investigated by tuning the polymer molecular weight (MW) and NP size. The effect of polymer-NP interaction strength is also investigated by varying the type of polymer and changing the surface chemistry of NPs. The results show that the polymers can significantly toughen NP films through a confinement-induced molecular bridging mechanism when they are under extreme confinement and completely lose interchain entanglement. This mechanism is controlled by polymer MW\, pore size and polymer-NP interaction strength and ultimately limited by the strength of polymer backbone. As the degree of confinement decreases\, the bridging mechanism becomes less pronounced. In this case\, entanglement-based mechanism becomes dominant and the fracture toughness of PINFs is dependent on the fracture properties of polymers. Finally\, it is shown that the fracture toughness of PINFs can be further enhanced using mesoporous NPs due to the increase of polymer-NP interaction area and the interlocking between the polymer and NPs via mesopores. Thus\, this work provides important guidelines for the design of mechanically robust PINFs as well as other highly loaded PNCFs. \nDissertation Committee: Dr. Daeyeon Lee (Co-advisor)\, Dr. Kevin T. Turner (Co-advisor)\, Dr. Karen I. Winey and Dr. Robert A. Riggleman \nLocation: Attendees are welcome in person in Towne 337 and via Zoom: https://upenn.zoom.us/j/99675230377.
URL:https://seasevents.nmsdev7.com/event/mse-ph-d-defense-understanding-the-fracture-behavior-of-polymer-infiltrated-nanoparticle-films-yiwei-qiang/
LOCATION:Room 337\, Towne Building\, 220 South 33rd Street\, Philadelphia\, PA\, 19104\, United States
CATEGORIES:Doctoral,Graduate,Student,Dissertation or Thesis Defense
ORGANIZER;CN="Materials Science and Engineering":MAILTO:johnruss@seas.upenn.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20220614T150000
DTEND;TZID=America/New_York:20220614T160000
DTSTAMP:20260405T194621
CREATED:20220602T154706Z
LAST-MODIFIED:20220602T154706Z
UID:10007192-1655218800-1655222400@seasevents.nmsdev7.com
SUMMARY:CEMB Distinguished Lecture: Bioengineered Synthetic Hydrogels for Regenerative Medicine
DESCRIPTION:The Center for Engineering MechanoBiology (CEMB) welcomes Dr. García for a Distinguished Lecture on June 14th at 3pm. A reception will follow the seminar in the Levine Lobby.
URL:https://seasevents.nmsdev7.com/event/cemb-distinguished-lecture-bioengineered-synthetic-hydrogels-for-regenerative-medicine/
LOCATION:Wu and Chen Auditorium (Room 101)\, Levine Hall\, 3330 Walnut Street\, Philadelphia\, PA\, 19104\, United States
CATEGORIES:Seminar,Distinguished Lecture
ORGANIZER;CN="Center for Engineering MechanoBiology (CEMB)":MAILTO:annjeong@seas.upenn.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20220613T120000
DTEND;TZID=America/New_York:20220613T130000
DTSTAMP:20260405T194621
CREATED:20220601T150934Z
LAST-MODIFIED:20220601T150934Z
UID:10007189-1655121600-1655125200@seasevents.nmsdev7.com
SUMMARY:PSOC@Penn Talk (TBA)
DESCRIPTION:Contact manu@seas.upenn.edu for the Zoom link.
URL:https://seasevents.nmsdev7.com/event/psocpenn-talk-tba/
LOCATION:PA
CATEGORIES:Seminar
ORGANIZER;CN="PSOC":MAILTO:manu@seas.upenn.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20220613T103000
DTEND;TZID=America/New_York:20220613T123000
DTSTAMP:20260405T194621
CREATED:20220606T145430Z
LAST-MODIFIED:20220606T145430Z
UID:10007193-1655116200-1655123400@seasevents.nmsdev7.com
SUMMARY:BE Doctoral Dissertation Defense: "Machine Learning and Quantitative Neuroimaging in Epilepsy and Low-field MRI" (T. Campbell Arnold)
DESCRIPTION:The Department of Bioengineering and Dr. Brian Litt are pleased to announce the Doctoral Dissertation Defense of T. Campbell Arnold. \nMonday\, June 13\, 2022 \n10:30 AM\nThe public is welcome to attend.\n\nRoom: Glandt Forum\, Singh Center\nZoom link: https://upenn.zoom.us/j/91843511143?pwd=K1QwQWpNdjVxN3haTGl2cmZFYnZqUT09\nMeeting ID: 918 4351 1143\nPasscode: 496383
URL:https://seasevents.nmsdev7.com/event/be-doctoral-dissertation-defense-machine-learning-and-quantitative-neuroimaging-in-epilepsy-and-low-field-mri-t-campbell-arnold/
LOCATION:Glandt Forum\, Singh Center for Nanotechnology\, 3205 Walnut Street\, Philadelphia\, PA\, 19104\, United States
CATEGORIES:Doctoral,Graduate,Student,Dissertation or Thesis Defense
ORGANIZER;CN="Bioengineering":MAILTO:be@seas.upenn.edu
END:VEVENT
END:VCALENDAR