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SUMMARY:IEM Seminar Series: Realizing Tomorrow's Multimaterials by Fundame
 ntal Reaction Kinetics Principles
DTSTART:20230703T133000
DTEND:20230703T143000
DTSTAMP:20260405T164530Z
UID:93773cc2a0bf8f493875ac5eb1b3b1efb95d296fe702a3d7fa3dd15f
CATEGORIES:Conferences - Seminars
DESCRIPTION:Dr Sijia Huang\,\nLawrence Fellow\, Material Engineering Divis
 ion\, Lawrence Livermore National Laboratory\, USA\nAbstract\nSeamless mul
 timaterial construction\, particularly joining soft\, stretchable tissues 
 with stiff\, inextensible structures\, is a common motif in animal physiol
 ogy. Such continuous mechanical gradients remain challenging to reproduce 
 in engineered systems because current resin chemistries only result in a s
 ingle fixed set of properties. Emerging additive manufacturing technologie
 s (3D printing) can potentially close the gap in structural complexity bet
 ween human-made and natural systems\, but these fabrication methods still 
 struggle to produce robust synthetic multimaterials comparable to those fo
 und in physiology. To this end\, I will discuss our latest efforts in engi
 neering sequential chemical reactions to close this gap. This talk will co
 ntain the two following topics.\n \n\n	A fundamental investigation of the
  reaction kinetics of common monomers used in photopolymerization systems.
  This kinetics tool can predict thiol-Michael photopolymerization reaction
  behaviors and guide researchers to choose monomers by design.\n	 \n	A ki
 netically sequential thiol-ene-epoxy framework for creating stable multima
 terials that can mimic a wide range of mechanical performances available i
 n natural tissues. These multimaterials possess Young’s Moduli spanning 
 over three orders of magnitude (from 0.0004 GPa to 1.6 GPa) with smooth tr
 ansitions between soft and stiff regions. This unique chemistry platform u
 nlocks many possibilities to design tomorrow’s tough and multi-responsiv
 e multimaterials with intricate architectures.\n\n\n\nBio\nSijia Huang is 
 currently a Lawrence Fellow in the Material Engineering Division at the La
 wrence Livermore National Laboratory. As a Principal Investigator\, her cu
 rrent projects include i) chemical recycling of polyurethanes\, ii) deve
 lopment of mechanically robust multimaterials for Volumetric Additive Manu
 facturing\, and iii) porous photopolymers for biomedical applications. Be
 fore joining LLNL in October 2021\, she graduated with her B.S. degree in 
 Chemical Engineering from the University of Minnesota-Twin Cities in 2015 
 and her Ph.D. degree in Chemical Engineering from the University of Colora
 do-Boulder in 2020. \n 
LOCATION:MXF 1 https://plan.epfl.ch/?room==MXF%201 https://epfl.zoom.us/j/
 64689228791?pwd=b3hkTFgrdTkxaHIveVFPbUtpTzRnZz09
STATUS:CONFIRMED
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