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  • Jan
    18

    ChBE Seminar Series, Dr. Xiaoguang Wang

    McCormick-Chemical and Biological Engineering

    8:45 AM L361, Technological Institute

    EVENT DETAILS

    Xiaoguang Wang

    Title:
    Are Imperfections in Materials Useful?

    Imperfections in materials, such as point defects (vacancies), line defects (dislocations) and surface defects (grain boundaries in polycrystalline structure), often cause detrimental effect on the macroscopic properties of the materials (e.g., mechanical, electrical or optical). This presentation will describe how imperfect structures in liquid crystalline soft matter can be leveraged to design and synthesize materials with unusual function and structure. The first part of the presentation will reveal that topological defects in liquid crystals can form the basis of a versatile class of three-dimensional, dynamic and reconfigurable templates for directing molecular self-assembly in a manner strongly analogous to other classes of macromolecular templates. The second part will move to design and synthesis of a polycrystalline liquid crystalline elastomer, demonstrating how the introduction of grain boundaries can yield a rich palette of stimuli-dependent shape changes. In particular, complex, non-monotonic responses will be demonstrated for the first time. Overall, this presentation will address fundamental challenges and potential applications of imperfect designs of soft matter using liquid crystallinity.

    Bio:
    Dr. Xiaoguang (William) Wang received a BS and MS in Chemical Engineering from Zhejiang University in Hangzhou, China. In 2011, he joined the group of Prof. Nicholas L. Abbott in the Department of Chemical and Biological Engineering at University of Wisconsin-Madison. After he received a PhD in 2016, he joined the group of Prof. Joanna Aizenberg as a postdoctoral fellow in the John A. Paulson School of Engineering and Applied Sciences at Harvard University. His research interests revolve around soft matter, including polymers, surfaces, liquid crystals, and self-assembly.

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    TIME Thursday, January 18, 2018 at 8:45 AM - 10:00 AM

    LOCATION L361, Technological Institute    map it

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    CONTACT Cody Jarrett    cody.jarrett@northwestern.edu EMAIL

    CALENDAR McCormick-Chemical and Biological Engineering

  • Sep
    23

    Welcome & Luncheon for New Full-time Graduate Students

    McCormick School of Engineering and Applied Science

    11:00 AM Ryan Auditorium, Technological Institute

    EVENT DETAILS

    TIME Monday, September 23, 2024 at 11:00 AM - 12:30 PM

    LOCATION Ryan Auditorium, Technological Institute    map it

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    CONTACT Andi Joppie    andi.joppie@northwestern.edu EMAIL

    CALENDAR McCormick School of Engineering and Applied Science

  • Sep
    24

    Fall 2024 Classes Begin (No Northwestern Monday in Fall)

    University Academic Calendar

    All Day

    EVENT DETAILS

    TIME Tuesday, September 24, 2024

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

    CALENDAR University Academic Calendar

  • Sep
    30

    Last day to add a class or change a section for Fall (Last day for tuition adjustment related to enrollment changes (to or from full-time). No reductions are made to bills for dropped or swapped classes after this date)

    University Academic Calendar

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    EVENT DETAILS

    TIME Monday, September 30, 2024

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

    CALENDAR University Academic Calendar

  • Dec
    7

    Fall classes end

    University Academic Calendar

    All Day

    EVENT DETAILS

    TIME Saturday, December 7, 2024

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

    CALENDAR University Academic Calendar