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  • [ October 17, 2018]

    Fluid mechanics for functional materials

  • Speaker:
    Claas Willem Visser
    Date:
    Wednesday, October 17, 2018
    Time:
    3:00-4:30pm
    Location:
    Rm. 210, COE Building No.1
    Host:
    Yantao Yang
  • Abstract
  • Additive manufacturing, commonly known as 3D printing, has accelerated the development of complex, multi-scale materials. These materials can be designed to exhibit special functional properties, such as sensing, support of living cells, sound or shock absorption, or controlled expansion/shrinkage. Therefore, they are highly relevant both from a scientific and a societal point of view.

    In this talk I will discuss novel, droplet-based additive manufacturing strategies for metals, biological (living) materials, and cellular materials, in which micro-droplets or bubbles are used as modular building blocks that constitute the functional material properties. High-speed imaging proves a crucial step in the development of these processes, as it enables studying the dynamics of droplet ejection, deposition, and manipulation. Understanding these aspects is required to tune the shape, size, and constitution of the building blocks, which determine the functional properties of the deposited materials.
  • Biography
  • Claas Willem Visser is an Assistant Professor at the Faculty of Mechanical Engineering of the University of Twente. His lab develops multi-scale functional materials. By using fluid droplets or bubbles as "building blocks" for solid materials, their mechanical, acoustic, electrical, and biological properties can be optimized for various application fields.
     
    From 2016 to 2018, Visser worked as a Rubicon Post-Doctoral Fellow at the Harvard John A. Paulson School of Engineering and the Wyss Institute for Biologically Inspired Engineering. Before that, as a post-doc at the University of Twente, Visser co-developed a new technology for particle fabrication and 3D printing named "In-air microfluidics". This technology is now commercialized in spinoff company IamFluidics, of which Visser is co-founder and chief scientific officer. He pursued his Ph.D. (2011-2015) under the supervision of Chao Sun and Detlef Lohse in the Physics of Fluids group at the University of Twente. From 2006 to 2011, Visser worked at Tata Steel Research, Development, and Technology as a researcher and project leader. Visser received his MSc degree in Applied Physics from the University of Twente in 2006. His MSc project concerned drag and lift forces on bubbles and particles in rotating flows, this project was supervised by Dr. Hanneke Bluemink and Prof. Detlef Lohse.