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BEGIN:VEVENT

CATEGORIES:Engineering
CATEGORIES:Lectures/Conferences
CATEGORIES:Other
CATEGORIES:Utilities
CATEGORIES:Panel/Seminar/Colloquium
CATEGORIES:Workshop/Short Course
CATEGORIES:Research
CATEGORIES:Information Session
CATEGORIES:Main
CONTACT;X-BEDEWORK-UID=00f1fcdb-0f068baf-010f-068baf83-00000004:None
CREATED:20260806T162602Z
DESCRIPTION:Abstract:\nSpatially resolving stimuli can allow us to better 
 understand physicochemical processes in complex environments [1\,2]. Towa
 rds this goal\, we develop ways of integrating Förster resonance energy t
 ransfer (FRET) chemistry into stimuli-responsive polymer architectures\, 
 such that FRET output (i.e.\, spectral shift in fluorescence) reflects po
 lymer chain conformation [3]. Using FRET\, we can spatially resolve confo
 rmation by confocal microscopy methods\, with high spatiotemporal resolut
 ion. In this talk\, I will discuss strategies to integrate FRET into func
 tional polymers\, and how we can examine the responsiveness of the polyme
 rs for understanding physicochemical processes. Specifically\, these syst
 ems are used to study surface wettability [3]\, localised changes in pH [
 1]\, resolving contact areas between surfaces\, and micro-to-nano structu
 re in secondary matrices [5]. We further show what are the most efficient
  methods for integrating FRET into such polymer matrices [6]\, for resolv
 ing such conformational changes. Our systems provide a non-invasive optic
 al measure of changing surface conditions\, which holds great promise for
  identifying processes in real-time.\n\n[1] J. Yadav\, I. Hermes\, A. Fer
 y\, Q. A. Besford\, Small 2025\, 2409323.\n[2] Q.A. Besford\, C. Rossner\
 , A. Fery\, Adv. Funct. Mater. 2023\, 2214915.\n[3] Q. A. Besford\, H.\, 
 Yong\, H.\, Merlitz\, A. J.\, Christofferson\, J. U.\, Sommer\, P.\, Uhlm
 ann\, A.\, Fery\, Angewandte Chemie 2021\, 60\, 16600-16606.\n[5] X. Liao
 \, D. Sychev\, K. Rymsha\, M. Al-Hussein\, J.P. Farinha\, A. Fery\, Q. A.
  Besford\, Advanced Science 2023\, 10\, 2304488.\n[6] W. Van den Heuvel\,
  H. Merlitz\, K. Rymsha\, Q. A. Besford\, Macromolecules 2025\, 58\, 1084
 7-10855.\n\nHost: Stefan Zauscher
DURATION:PT1H
DTSTAMP:20260806T162602Z
DTSTART;TZID=America/New_York:20260831T120000
LAST-MODIFIED:20260806T162602Z
LOCATION;X-BEDEWORK-UID=18832edc-1b287efb-011b-2c10ff6a-00000003:Teer 203
STATUS:CONFIRMED
SUMMARY:DMI/MEMS Seminar Presented by Prof Quinn Besford
UID:CAL-8a002cbd-9fb2e569-019f-d7e5650c-00002aa7demobedework@mysite.edu
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 blic-user/Other/Information Session
X-BEDEWORK-ALIAS;X-BEDEWORK-PARAM-DISPLAYNAME=Workshop_Short_Course:/user/
 public-user/Other/Workshop_Short_Course
X-BEDEWORK-ALIAS;X-BEDEWORK-PARAM-DISPLAYNAME=Panel_Seminar_Colloquium:/us
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X-BEDEWORK-ALIAS;X-BEDEWORK-PARAM-DISPLAYNAME=Research:/user/public-user/T
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 olofMedicine_CellBiology,/principals/users/agrp_ArtsandSciences_Chemistry
 ,/principals/users/agrp_PrattSchool_CEE,/principals/users/agrp_PrattSchoo
 l_ECE,/principals/users/agrp__ArtsandSciences_Mathematics,/principals/use
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 EnvironmentalPolicySolutions,/principals/users/agrp__ArtsandSciences_Phys
 ics,/principals/users/agrp_PrattSchool,/principals/users/agrp__ArtsandSci
 ences_TrinityCollege,":Academic Resource Center (ARC)\,Biology\,Biomedica
 l Engineering (BME)\,Cell Biology\,Chemistry\,Civil and Environmental Eng
 ineering (CEE)\,Electrical and Computer Engineering (ECE)\,Mathematics\,M
 echanical Engineering and Materials Science (MEMS)\,Nicholas Institute fo
 r Energy\, Environment and Sustainability\,Physics\,Pratt School of Engin
 eering\,Trinity College
X-BEDEWORK-DUKE-SERIES:DMI Seminar Series
X-BEDEWORK-STUDENT-CONTACT;X-BEDEWORK-PARAM-EMAIL=liana.igescu@duke.edu:Li
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END:VEVENT
BEGIN:VEVENT

CATEGORIES:Engineering
CATEGORIES:Lectures/Conferences
CATEGORIES:Other
CATEGORIES:Utilities
CATEGORIES:Lecture/Talk
CATEGORIES:Panel/Seminar/Colloquium
CATEGORIES:Research
CATEGORIES:Information Session
CATEGORIES:Main
CONTACT;X-BEDEWORK-UID=00f1fcdb-0f068baf-010f-068baf83-00000004:None
CREATED:20260720T135552Z
DESCRIPTION:Abstract: \nArchitected materials typically derive their mecha
 nical properties from continuous\, rigidly connected networks of struts\,
  plates\, or shells. In this talk\, I will introduce an alternative desig
 n paradigm based on discrete\, topologically interlocked building blocks:
  polycatenated architected materials (PAMs). Inspired by chain mail\, PAM
 s consist of rings\, polygons\, or polyhedral cages concatenated into thr
 ee-dimensional networks derived from crystalline lattice topologies\, wit
 h kinematic degrees of freedom set by particle geometry and catenation pa
 ttern. I will first describe our earlier work on two-dimensional interloc
 ked fabrics\, showing how jamming can be triggered by external confinemen
 t to reversibly and dramatically stiffen chain mail sheets\, and how a mo
 dified Maxwell criterion predicts the in-plane and out-of-plane rigidity 
 of torus-knot tessellated fabrics from their connectivity alone. Building
  on these principles\, I will present a general design framework that tra
 nslates arbitrary crystalline networks into three-dimensional polycatenat
 ed particle assemblies. Under small loads\, PAMs behave like non-Newtonia
 n fluids\, exhibiting both shear-thinning and shear-thickening responses\
 ; at larger strains\, they jam into solid-like lattices with nonlinear\, 
 hysteretic stress-strain behavior reminiscent of granular media. I will s
 how that this fluid-solid duality\, along with the critical jamming strai
 n\, can be programmed through particle geometry and catenation topology\,
  and that it persists across length scales\, from centimeter-scale printe
 d samples to micron-scale structures whose shape can be reversibly reconf
 igured using electrostatic forces. Together\, these results establish PAM
 s as a new class of architected materials that bridge discrete granular p
 hysics and continuum architected-materials design\, opening routes toward
  stimuli-responsive\, energy-absorbing\, and shape-morphing systems.\n\nH
 ost: Xiaoyue Ni & Cate Brinson
DURATION:PT1H
DTSTAMP:20260730T150838Z
DTSTART;TZID=America/New_York:20260902T120000
LAST-MODIFIED:20260730T150838Z
LOCATION;X-BEDEWORK-UID=18832e99-20476e5b-0120-58864347-000000be:Fitzpatri
 ck Center Schiciano Auditorium Side A\, room 1464
STATUS:CONFIRMED
SUMMARY:DMI/MEMS Signature Lecture Presented by Prof. Chiara Daraio
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X-BEDEWORK-ALIAS;X-BEDEWORK-PARAM-DISPLAYNAME=Panel_Seminar_Colloquium:/us
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X-BEDEWORK-ALIAS;X-BEDEWORK-PARAM-DISPLAYNAME=Information Session:/user/pu
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X-BEDEWORK-ALIAS;X-BEDEWORK-PARAM-DISPLAYNAME=Engineering:/user/public-use
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X-BEDEWORK-ALIAS;X-BEDEWORK-PARAM-DISPLAYNAME=Research:/user/public-user/T
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 olofMedicine_CellBiology,/principals/users/agrp_ArtsandSciences_Chemistry
 ,/principals/users/agrp_PrattSchool_CEE,/principals/users/agrp_PrattSchoo
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 EnvironmentalPolicySolutions,/principals/users/agrp__ArtsandSciences_Phys
 ics,/principals/users/agrp_PrattSchool,/principals/users/agrp__ArtsandSci
 ences_TrinityCollege,":Academic Resource Center (ARC)\,Biology\,Biomedica
 l Engineering (BME)\,Cell Biology\,Chemistry\,Civil and Environmental Eng
 ineering (CEE)\,Electrical and Computer Engineering (ECE)\,Mathematics\,M
 echanical Engineering and Materials Science (MEMS)\,Nicholas Institute fo
 r Energy\, Environment and Sustainability\,Physics\,Pratt School of Engin
 eering\,Trinity College
X-BEDEWORK-STUDENT-CONTACT;X-BEDEWORK-PARAM-EMAIL=liana.igescu@duke.edu:Li
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X-BEDEWORK-DUKE-SERIES:DMI Seminar Series
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X-BEDEWORK-IMAGE-ALT-TEXT:September 2 Chiara Daraio DMI/MEMS Seminar
X-BEDEWORK-SUBMITTEDBY:reb88 for Duke Materials Initiative (agrp_Institute
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END:VEVENT
END:VCALENDAR