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Programmable and Direct Nanomanufacturing of Functional Materials on multi-dimensional surfaces using Self - Aligning Nanojet (SA - N)

Event Type
Seminar/Symposium
Sponsor
Department of Mechanical Science and Engineering
Location
190 Engineering Sciences Building
Date
Sep 18, 2019   12:00 pm  
Speaker
Professor Jiyoung Chang, Mechanical Engineering, University of Utah
Contact
Lindsey Henson
E-Mail
lrh@illinois.edu
Phone
217-300-8238
Views
291

Abstract: Nanomanufacturing, defined as “the production of materials and structures with at least one lateral dimension between 1 and 100 nm”, has been showing potential for revolutionizing a variety of research fields, including the biomedical, electronics, optics, energy, and materials fields. Interestingly, studies related to the manufacturing of nanoscale structures on pre-formed 3D surfaces are still in their infancy, and most current approaches are focused on generating nanoscale 3D structures. However, the recent rapid growth in the flexible and wearable electronics industry demands scalable and efficient nanomanufacturing processes that can be directly applied to 3D surfaces. The existing approaches, developed mainly for 2D surfaces, face significant challenges to address such needs to deal with complex 3D profiles. This talk will present a novel electrohydrodynamic (EHD) driven nanomanufacturing method, named Self-Aligning Nanojet (SA-N), to enable direct patterning of functional nanofibers on non-planar surfaces. The talk will cover precise patterning methods of nanofibers on 2D surfaces using Droplet-Jet mode Near-field Electrospinning (DJ-NFES) and expand the scope to 2.5D and 3D surfaces. The key achievement in terms of hardware and software will be discussed as well as the challenges to broaden the technology into nanoscale additive manufacturing on 3D surfaces.

 

Bio: Dr. Chang is an assistant professor in the department of mechanical engineering at the University of Utah. Before joining the University of Utah in 2015, Dr. Chang was a postdoctoral fellow in the physics department at the University of California, Berkeley, the Lawrence Berkeley National Laboratory (LBNL), and in the Kavli Energy Nanoscience Institute. He obtained his B.S. and M.S. degrees from the Yonsei University’s School of Mechanical Engineering in Korea in 2005 and 2007, respectively. He received his Ph.D. in mechanical engineering from the University of California, Berkeley, in 2012. Dr. Chang also spent one year as a postdoctoral scholar in the school of dentistry at the University of California, San Francisco. He is currently a director of the wearable NEMS laboratory, and his research focuses on advanced micro/nanomanufacturing using functional low-dimensional materials for various applications including flexible and wearable electronics.

Host:  Professor SungWoo Nam

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