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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
UID:CAL-8a002ad8-9f611855-019f-7fcfcb46-00006374demobedework@mysite.edu
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 ineering (CEE)\,Electrical and Computer Engineering (ECE)\,Mathematics\,M
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 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
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