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DTSTART;TZID=America/New_York:20220601T153000
DTEND;TZID=America/New_York:20220601T173000
DTSTAMP:20260405T195002
CREATED:20220517T184714Z
LAST-MODIFIED:20220517T184714Z
UID:10007181-1654097400-1654104600@seasevents.nmsdev7.com
SUMMARY:BE Doctoral Dissertation Defense: "Application of Functional Near-Infrared Spectroscopy to Examine the Neurophysiology of the Injured Adolescent Brain" (Divya Jain)
DESCRIPTION:The Department of Bioengineering at the University of Pennsylvania\, Dr. Kristy Arbogast and Dr. Catherine McDonald are pleased to announce the Doctoral Dissertation Defense of Divya Jain \n  \nTitle: Application of Functional Near-Infrared Spectroscopy to Examine the Neurophysiology of the Injured Adolescent Brain \nDate: Wednesday\, June 1st\, 2022 \nTime: 3:30 PM \nLocation: Roberts Center for Pediatric Research (2716 South St\, Philadelphia\, PA 19146)\, Room 1120B \n  \nThe public is invited to attend in-person or virtually at the link below: \nZoom Link: https://upenn.zoom.us/j/91632121762?pwd=c2QzdHlmbjZ6aVE5REkyV2hWb0pqZz09 \nMeeting ID: 916 3212 1762 \nPassword: concussion
URL:https://seasevents.nmsdev7.com/event/be-doctoral-dissertation-defense-application-of-functional-near-infrared-spectroscopy-to-examine-the-neurophysiology-of-the-injured-adolescent-brain-divya-jain/
LOCATION:Room 1120B\, Roberts Center for Pediatric Research\, 2716 South Street\, Philadelphia\, PA\, 19146\, United States
ORGANIZER;CN="Bioengineering":MAILTO:be@seas.upenn.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20220606T120000
DTEND;TZID=America/New_York:20220606T130000
DTSTAMP:20260405T195003
CREATED:20220601T145534Z
LAST-MODIFIED:20220601T145534Z
UID:10007185-1654516800-1654520400@seasevents.nmsdev7.com
SUMMARY:PSOC@Penn Talk:  “Lectin-glycan affinity in nanobio theragnostics: The specific capture of pancreatic cancer exosomes and the targeted therapy of tumor cells” (Jonghoon Choi)
DESCRIPTION:Contact manu@seas.upenn.edu for the Zoom link.
URL:https://seasevents.nmsdev7.com/event/psocpenn-talk-lectin-glycan-affinity-in-nanobio-theragnostics-the-specific-capture-of-pancreatic-cancer-exosomes-and-the-targeted-therapy-of-tumor-cells-jonghoon-choi/
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:20220606T130000
DTEND;TZID=America/New_York:20220606T150000
DTSTAMP:20260405T195003
CREATED:20220510T185339Z
LAST-MODIFIED:20220510T185339Z
UID:10007177-1654520400-1654527600@seasevents.nmsdev7.com
SUMMARY:BE Doctoral Dissertation Defense: "Experimental and computational analyses of locomotor rhythm generation and modulation in Caenorhabditis elegans" (Hongfei Ji)
DESCRIPTION:The Department of Bioengineering at the University of Pennsylvania and Dr. Chris Fang-Yen are pleased to announce the Doctoral Dissertation Defense of Hongfei Ji. \nTitle: Experimental and computational analyses of locomotor rhythm generation and modulation in Caenorhabditis elegans\nDate: June 6\, 2022\nTime: 1:00 pm\nZoom link
URL:https://seasevents.nmsdev7.com/event/be-doctoral-dissertation-defense-experimental-and-computational-analyses-of-locomotor-rhythm-generation-and-modulation-in-caenorhabditis-elegans-hongfei-ji/
LOCATION:https://upenn.zoom.us/j/96715197752
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:20220607T150000
DTEND;TZID=America/New_York:20220607T170000
DTSTAMP:20260405T195003
CREATED:20220601T133316Z
LAST-MODIFIED:20220601T133316Z
UID:10007184-1654614000-1654621200@seasevents.nmsdev7.com
SUMMARY:BE Doctoral Dissertation Defense: "Machine learning as tool and theory for computational neuroscience" (Ari Benjamin)
DESCRIPTION:The Department of Bioengineering at the University of Pennsylvania and Dr. Konrad Kording are pleased to announce the Doctoral Dissertation Defense of Ari Benjamin.\n\nTitle “Machine learning as tool and theory for computational neuroscience”\,\nDate: Tuesday\, June 7th\nTime: 3:00pm\nLocation: Goddard 101 and in the Zoom room:\nhttps://upenn.zoom.us/j/92613907755?pwd=K21OU2Q4SUlKQkduelF6ZmVjalNOZz09\n\nMeeting ID: 926 1390 7755\nPasscode: 792713.\n\nThe public is welcome to attend.
URL:https://seasevents.nmsdev7.com/event/be-doctoral-dissertation-defense-machine-learning-as-tool-and-theory-for-computational-neuroscience-ari-benjamin/
LOCATION:Goddrd 101
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:20220610T140000
DTEND;TZID=America/New_York:20220610T160000
DTSTAMP:20260405T195003
CREATED:20220601T132853Z
LAST-MODIFIED:20220601T132853Z
UID:10007183-1654869600-1654876800@seasevents.nmsdev7.com
SUMMARY:BE Doctoral Dissertation: "Characterizing medial temporal lobe neurodegeneration due to  tau pathology in Alzheimer's Disease using postmortem imaging” (Sadhana Ravikumar)
DESCRIPTION:The Department of Bioengineering at the University of Pennsylvania and Dr. Paul Yushkevich are pleased to announce the Doctoral Dissertation Defense of Sadhana Ravikumar.\n\nTitle: “Characterizing medial temporal lobe neurodegeneration due to  tau pathology in Alzheimer’s Disease using postmortem imaging”\n \nDate: Friday\, June 10th\, 2022\nTime: 2:00 PM\nLocation: Biomedical Research Building (BRB)\, Classroom 0252 and Zoom.\n\nThe public is invited to attend in-person or virtually at the link below:\n\n\nLink: https://upenn.zoom.us/j/95448705068?pwd=Uk8rckFKbUlXYlpCbENtYjlrdUdjQT09\n \nMeeting ID: 954 4870 5068\nPasscode: amyloid
URL:https://seasevents.nmsdev7.com/event/be-doctoral-dissertation-characterizing-medial-temporal-lobe-neurodegeneration-due-to-tau-pathology-in-alzheimers-disease-using-postmortem-imaging-sadhana-ravikumar/
LOCATION:BRB 0252
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:20220610T150000
DTEND;TZID=America/New_York:20220610T163000
DTSTAMP:20260405T195003
CREATED:20220405T183004Z
LAST-MODIFIED:20220405T183004Z
UID:10007152-1654873200-1654878600@seasevents.nmsdev7.com
SUMMARY:CBE PhD Dissertation Defense | "The effects of platelet signaling inhibitors on clot development under flow"
DESCRIPTION:Abstract: \n“Syk and Src family kinases (SFK) inhibitors interfere with signaling from GPVI\, α2β1\, αIIbβ3\, and GPIb-IX-V to reduce thrombotic risk or induce bleeding episodes. Collagen-mediated clustering of platelet GPVI results in phosphorylation of SFKs such as Lyn and Fyn\, and active Lyn is constitutively bound to GPVI to allow rapid signaling. During clotting under flow\, the generation of fibrin can have diverse influences on platelet signaling by sequestering thrombin and potentially activating GPVI signaling within the clot interior. These inhibitors tackle the thrombus formation at earlier stages since the platelets reach the activation surface. Direct inhibition of GPVI was used to compare the difference between inhibition of subsequent pathways. Using microfluidics\, the effects of these inhibitors can be explored under defined hemodynamic flows and procoagulant surface triggers. Additionally\, the drug may be present in the blood at desired time of clotting by perfusion switching to drug-treated blood. This experimental design allows exploration of platelet response at different stages of clotting through the measurement of drug potency to modulate clotting on different procoagulant surface conditions.“
URL:https://seasevents.nmsdev7.com/event/cbe-phd-dissertation-defense-the-effects-of-platelet-signaling-inhibitors-on-clot-development-under-flow/
LOCATION:Room 337\, Towne Building\, 220 South 33rd Street\, Philadelphia\, PA\, 19104\, United States
CATEGORIES:Doctoral,Graduate,Student,Dissertation or Thesis Defense
ORGANIZER;CN="Chemical and Biomolecular Engineering":MAILTO:cbemail@seas.upenn.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20220613T103000
DTEND;TZID=America/New_York:20220613T123000
DTSTAMP:20260405T195003
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
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20220613T120000
DTEND;TZID=America/New_York:20220613T130000
DTSTAMP:20260405T195003
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:20220614T150000
DTEND;TZID=America/New_York:20220614T160000
DTSTAMP:20260405T195003
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:20220614T150000
DTEND;TZID=America/New_York:20220614T170000
DTSTAMP:20260405T195003
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:20220615T110000
DTEND;TZID=America/New_York:20220615T120000
DTSTAMP:20260405T195003
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:20220617T120000
DTEND;TZID=America/New_York:20220617T130000
DTSTAMP:20260405T195003
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:20220621T100000
DTEND;TZID=America/New_York:20220621T113000
DTSTAMP:20260405T195003
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:20220621T120000
DTEND;TZID=America/New_York:20220621T130000
DTSTAMP:20260405T195003
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:20220622T120000
DTEND;TZID=America/New_York:20220622T130000
DTSTAMP:20260405T195003
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:20220627T100000
DTEND;TZID=America/New_York:20220627T120000
DTSTAMP:20260405T195003
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:20220627T120000
DTEND;TZID=America/New_York:20220627T130000
DTSTAMP:20260405T195003
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:20220628T100000
DTEND;TZID=America/New_York:20220628T110000
DTSTAMP:20260405T195003
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
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