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​Seminar on Toward sustainable 3D printing technology: Ultra fast and low cost 3D hologram printing 

Published on: 27-Jan-2021

School of Mechanical & Aerospace Engineering
Seminar Announcement​
                   Joint Seminar IEEE Technology Engineering Management Society, Singapore Chapter

Toward sustainable 3D printing technology: Ultra fast and low cost 3D hologram printing
Prof. Yong Jin YOON
Korea Advanced Institute of Science and Technology (KAIST)
Nanyang Technological University, Singapore
Date: Wednesday, 27 January 2021
Time: 3:00pm 

Join Zoom Meeting
Meeting ID: 976 0506 3441
Passcode: 803830

This seminar will be hosted by A/P Moon Seung Ki

Seminar Abstract
Concept of non-conventional 3D additive manufacturing is introduced for biomedical research. The ultimate aim of non-conventional 3D additive manufacturing is to develop a high-throughput, low-cost process for 3D additive manufacturing microstructures in hydrogels. The project centres on Three-Dimensional Hologram Lithography as a novel 3D printed microstructure fabrication process. Applications of these microstructures include making tissue scaffolds for regenerative therapies, for pharmaceutical screening, and for fundamental in vitro biological experiments. 

The outstanding features of 3D Hologram Printing system are mainly attributed by the transparent diffractive optical elements (DOEs) of linear binary Fresnel lens fabricated to control the luminous intensity distribution. These DOEs of different patterns are arranged in series on a cover slip with each optical element designed to focus and diffract light at a particular plane within the device. Coupled with other components of the system, 3D hydrogel cellular scaffolds can be easily printed via effective and efficient one-step light exposure to the photo-crosslinkable polymer solution upon demand. The combined outstanding features of photo crosslinking and diffractive optical technique incorporated within this system enable the patterning of hydrogel within seconds for not only bulk structures, making large-scale fast production feasible, but also for localized, specific areas of interest, making printing of complex features simple. With this 3D Hologram Printing system, 3D two-layered hydrogel woodpile structures were successfully fabricated within 3 seconds.

Speaker’s Biography​

Dr. Yoon is an Associate Professor in Department of Mechanical Engineering at Korea Advanced Institute of Science and Technology (KAIST). Dr. Yoon is also an Adjunct Professor in School of Mechanical & Aerospace Engineering, Nanyang Technological University, Singapore.
Dr. Yoon obtains his Ph.D. degree in Mechanical Engineering with two Master degrees from Mechanical Engineering and Electrical Engineering from Stanford University. Dr. Yoon also obtains his Ph.D. minor in Management Science and Engineering during his graduate study in Stanford. His current research activities include developing Lab-Chip biosensors, medical devices, hearing mechanics, and 3D printing for bioresearch. Besides research, Dr. Yoon is interested in an academic-based entrepreneur career as a start-up accelerator. For the past years, he has been actively incubating start-ups and research based spin-off companies, where he took the lead to raise startup funding from government entities and renowned global venture capitals.


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