Department Events

Events

  • Jan
    22

    ME 512 & TAM Seminar - Meredith Silberstein - Mechanics and Chemistry in Designing Polymers

    McCormick - Mechanical Engineering

    3:00 PM L211, Technological Institute

    EVENT DETAILS

    Monday, January 22, 2018

    3:00pm - 4:00pm

    Mechanics and Chemistry in Designing Polymers

    Abstract

    The coupling of mechanics and chemistry is an emerging field leading to innovative material design. This talk will cover two projects within my group, one towards utilizing mechanochemistry in polymers and composites, the other towards tailoring bulk polymers formed from assemblies of single chain polymer nanoparticles (SCPN). Topic 1: Polymer and interface multifunctionality can be designed through the incorporation of chemical groups termed “mechanophores” that have a specific chemical transformation in response to applied force. Mechanophores have been developed that change color, emit light, alter polymer chain contour length, and trigger crosslinking. However, incorporating these force-driven molecules to create stress-driven functions in bulk materials can be tricky. We use a combination of computational, theoretical, and experimental approaches to understand how stress on the bulk scale is converted to mechanophore-scale force to then modify the polymer. Topic 2: SCPN are formed from intra-chain cross-linking of a single polymer chain. These units have potential as the building blocks of polymers where the properties are controlled by the highly tailorable SCPN structure rather than just by the material chemistry. We utilize both molecular dynamics simulations and experiments to investigate the mechanical behavior of a SCPN assemblies as a function of degree of polymerization and cross-linking.

    Biography

    Meredith Silberstein is an Assistant Professor and Mills Family Faculty Fellow in the Sibley School of Mechanical & Aerospace Engineering at Cornell University. She received her PhD in June 2011 from the MIT Department of Mechanical Engineering with a major in solid mechanics and a minor in energy. Afterward, she served as a postdoctoral fellow at the Beckman Institute at the University of Illinois Urbana-Champaign, investigating mechanochemically active materials. In 2013 she received the Haythornthwaite Research Initiation Grant from ASME Applied Mechanics Division. In 2017 she received the NSF CAREER award. Meredith Silberstein's Mechanics for Materials Design (MMD) Lab is devoted to using mechanical experiments and modeling methods in material design, with particular focus on multifunctional, active, and polymeric materials.

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    TIME Monday, January 22, 2018 at 3:00 PM - 4:00 PM

    LOCATION L211, Technological Institute    map it

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    CONTACT Theresa Santos    tami.santos@northwestern.edu EMAIL

    CALENDAR McCormick - Mechanical Engineering

  • Aug
    4

    Six-week session ends

    University Academic Calendar

    All Day

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    TIME Saturday, August 4, 2018

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    CONTACT Office of the Registrar    nu-registrar@northwestern.edu EMAIL

    CALENDAR University Academic Calendar

  • Aug
    10

    Dissertation, PhD Final Exam and change of grade forms due to TGS for Summer PhD candidates

    University Academic Calendar

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    TIME Friday, August 10, 2018

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    CONTACT Office of the Registrar    nu-registrar@northwestern.edu EMAIL

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  • Aug
    17

    Master's Completion form due for TGS Summer master's candidates

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    TIME Friday, August 17, 2018

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    CONTACT Office of the Registrar    nu-registrar@northwestern.edu EMAIL

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  • Aug
    18

    Eight-week session ends

    University Academic Calendar

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    EVENT DETAILS

    TIME Saturday, August 18, 2018

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    CONTACT Office of the Registrar    nu-registrar@northwestern.edu EMAIL

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  • Sep
    1

    Ten-week session ends

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    EVENT DETAILS

    TIME Saturday, September 1, 2018

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    CONTACT Office of the Registrar    nu-registrar@northwestern.edu EMAIL

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