Interview with Jungho Choi: Cost-Effective Nanoscale Fabrication System

Jungho Choi is a Ph.D candidate at Gatech with a background in mechanical engineering. His research is specialized in micro/nanoscale manufacturing. He aims to develop a new metal/polymer additive manufacturing system and generate the processing science for a rapid and cost-effective nanoscale fabrication system. Jungho is an expert speaker for the 3DHEALS virtual event focusing on 3D microfabrication and is also an author of a recent publication focusing on the same subject.

When was the first encounter you had with 3D printing?

Jungho: The first time I encountered 3D printing was at Georgia Tech back in 2016. As I entered the invention studio in the mechanical engineering department building, I was immediately struck by the whirring and buzzing sounds from the printers. Watching as layers of material slowly formed into an object was mesmerizing. At that moment, I could not help but be surprised by the innovation and potential of this technology. I kept thinking about the novel ideas of the possibilities that 3D printing could be used, from customized products to revolutionary advancements in manufacturing. 

What inspired you to start your journey?

Jungho: The ability to create unique structures that were previously impossible with conventional fabrication methods served as a powerful inspiration for embarking on my journey in 3D printing. The potential of leveraging this technology to innovate and push the boundaries of what can be achieved, both in terms of design complexity and functionality, inspired me to explore its potential. 

Who inspired you the most along this journey?

Jungho: Professor Sourabh Saha from Gatech inspired me through this 3D printing research journey. His dedication to advancing 3D printing technology on an industrial scale, particularly through his innovative work in micro/nano 3D printing techniques, has been a profound inspiration on my 3D printing journey. His mentorship sparked my enthusiasm for exploring the potential of 2D and 3D printing, driving me to contribute to the advancement of this field and make a meaningful impact in the world. 

What motivates you the most for your work? 

Jungho: Currently, metallic nanostructures are predominantly fabricated by cleanroom-based microfabrication techniques, prohibitively expensive for low-to-moderate volume manufacturing. Although several localized deposition-based techniques have been demonstrated to fabricate nanoscale metallic structures, such techniques are extremely slow, with fabrication rates less than 1 μm2/s. My work was motivated by overcoming these current limits in nanoscale metal printing by using Superluminescent Light Projection technique. 

What is/are the biggest obstacle(s) in your line of work? If you have conquered them, what were your solutions? 

Jungho: Change the current nanoscale 2.5D printing system to a 3D system. Currently, the first layer of metal film blocks the second light projection.

What do you think is (are) the biggest challenge(s) in 3D Printing and bioprinting? What do you think the potential solution(s) is (are)?

Jungho: Scalability is a significant challenge in 3D printing and bio-printing. As these technologies advance, ensuring that they can be effectively scaled up for mass production. The potential solution is to improve printing processes to be faster and finer than currently existing techniques. 

If you were granted three wishes by a higher being, what would they be? 


1. Invent very fast public transportation so that people can live further outside of the city (housing issue) 

2. Recover nature and air pollution before gasoline is ever used. 

3. Get a new energy source that is 100% reusable and environmentally safe. 

What advice would you give a smart driven college student in the “real world”? What bad advice have you heard they should ignore? 


Good one: Embrace failure and learn from it. You will fail in a lot of circumstances in your life. Do not be afraid of it. Embrace it as a stepping stone to success. 

Bad one: Follow the “crowd.” Do not follow someone’s path just because everyone else is doing it. Trust your instincts and pursue your unique passions and goals

What’s your favorite book you read this year and why? Alternatively, what’s your favorite book of all time you read and why?

Jungho: “Empire of Ants” Bernard Werber 

The author enables us to view the world from a completely new perspective by breaking away from a human-centric worldview and looking at reality from an entirely different view, such as the perspective ants, allowing us to examine reality from various viewpoints. 

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