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  • Feb
    4

    Appl Math: Pedro Saenz on "Walking Droplets & Galloping Bubbles"

    McCormick-Engineering Sciences and Applied Mathematics (ESAM)

    11:15 AM M416, Technological Institute

    EVENT DETAILS

    Title: Walking Droplets & Galloping Bubbles

    Speaker: Pedro Saenz, University of North Carolina at Chapel Hill

    Abstract: This talk explores two distinct problems in physics and engineering, blending experiments, simulations, and theory. The first part examines walking droplets, or "walkers," which self-propel across a vibrating fluid bath through a resonant interaction with their guiding wave field. These droplets exhibit behaviors typically associated with quantum particles, such as localized motion in disordered environments, which is akin to quantum Anderson localization. The study reveals that diffusion is suppressed when the guiding wave field interacts with random topographies, driven by a resonant coupling that creates an attractive wave potential, demonstrating how a classical particle can localize like a wave. The second part introduces a new mechanism where bubbles "gallop" along horizontal surfaces in a vertically vibrated fluid chamber, powered by interactions between their shape oscillations. These active bubbles can follow diverse trajectory patterns, including rectilinear, orbital, and run-and-tumble motions, which can be controlled by external forces. Through periodic deformations and inertial forces, these bubbles achieve self-propulsion without external direction. The study presents potential applications for galloping bubbles, including bubble manipulation, transport, sorting, navigation through complex fluid networks, and surface cleaning.

    Zoom: https://northwestern.zoom.us/j/93833993196

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    TIME Tuesday, February 4, 2025 at 11:15 AM - 12:15 PM

    LOCATION M416, Technological Institute    map it

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    CONTACT Ted Shaeffer    ted.shaeffer@northwestern.edu EMAIL

    CALENDAR McCormick-Engineering Sciences and Applied Mathematics (ESAM)

  • Sep
    8

    Welcome & Breakfast for New McCormick PhD Students

    McCormick School of Engineering and Applied Science

    9:00 AM LR2 & Tech East Plaza, Technological Institute

    EVENT DETAILS

    TIME Monday, September 8, 2025 at 9:00 AM - 10:00 AM

    LOCATION LR2 & Tech East Plaza, 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
    12

    New Undergraduate Fall 2025 Registration

    University Academic Calendar

    All Day

    EVENT DETAILS

    TIME Friday, September 12, 2025

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

    CALENDAR University Academic Calendar

  • Sep
    15

    Welcome & Luncheon for New Full-time Graduate Students

    McCormick School of Engineering and Applied Science

    11:00 AM Ryan Auditorium & Tech East Plaza, Technological Institute

    EVENT DETAILS

    TIME Monday, September 15, 2025 at 11:00 AM - 12:30 PM

    LOCATION Ryan Auditorium & Tech East Plaza, 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
    16

    Fall Classes Begin. Change of Registration (Drop/Add) Late registration for returning students begins

    University Academic Calendar

    All Day

    EVENT DETAILS

    TIME Tuesday, September 16, 2025

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

    CALENDAR University Academic Calendar