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Keynote Lecture Series Archive

Spring, 2019

Advanced Manufacturing of Unconventional 3D Micro- and Meso-Structures: From Strain-Engineered Growth to Mechanically Guided Assembly

Hangbo Zhao

Postdoctoral Researcher
Center for Bio-Integrated Electronics
Northwestern University
Evanston, IL

The growing availability of methods for three-dimensional (3D) manufacturing methods has implications across diverse areas ranging from energy systems to microelectronics, yet few techniques offer the necessary capabilities in geometric complexity, materials compatibility and design versatility. In this talk, I will discuss two novel manufacturing approaches to creating 3D functional material systems that are not feasible by conventional manufacturing methods: 1) strain-engineered growth of complex 3D carbon nanotube microarchitectures, and 2) mechanically guided 3D assembly of a broad range of functional materials and electronics. I will show how strain-engineered growth of carbon nanotubes, in combination with conformal coatings, enables direct formation of hierarchically structured surfaces with tailorable mechanical and interfacial properties for controlling liquid wetting and adhesion. Next, I will describe novel manufacturing technologies that exploit structural buckling and local twisting to create morphable 3D mesoscale structures in diverse advanced materials, and show how these can be used to make tunable optical metamaterials. I will also outline a microphysiological platform fabricated by mechanically guide assembly for tissue engineering and biomedical research. I will conclude by discussing new opportunities in designing and manufacturing multifunctional, adaptive material systems.

Hangbo Zhao is currently a postdoctoral researcher in the Center for Bio-Integrated Electronics in Prof. John Rogers’ group at Northwestern University, where he works on multifunctional 3D materials systems and bio-integrated electronics for applications in tissue engineering and healthcare. He received his Ph.D. degree in the Department of Mechanical Engineering at MIT in 2017, supervised by Prof. A. John Hart. His Ph.D. thesis focused on developing engineered, hierarchical surfaces for controlling liquid wetting and adhesion. He received his master’s degree also in mechanical engineering at MIT in 2014, supervised by Prof. Carl V. Thompson. He received his bachelor’s degree in precision instruments at Tsinghua University in China in 2011.

Wednesday, March 27, 2019
3:30 PM
Seaver Science Library, Room 150 (SSL 150)

Refreshments will be served at 3:15 pm.

host: Gupta