Space researcher. Materials scientist. Entrepreneur. And Yellow Jacket. The only thing missing on Jud Ready’s resume is “astronaut.” Not for lack of trying, though. Ready had hoped earning his bachelor’s, master’s, and doctoral degrees in materials science and engineering at Georgia Tech would lead him to a spot in NASA’s Astronaut Corps. Instead, it’s led him to the Georgia Tech Research Institute (GTRI), where his passion for space is alive and well.

1. What about space fascinates you? 
It all goes back to my dad being interested in space. In first grade, we went to a how-to-use-the-library class, and I came across a book about the Mercury and Apollo astronauts. I checked it out and renewed it over and over again. I eventually finished it in second grade. So, I’ve had a lifelong commitment since then to space.

2. What drew you to engineering? 
I grew up in Chapel Hill. In that same first grade class, we went to the University of North Carolina chemistry department. My mom is really into roses, and they froze a rose in liquid nitrogen then smashed it on the table. It broke into a million bits, and I was like, “What?!” The ability of science to solve the unknown grabbed me. And I had a series of very good science teachers — Mr. Parker in fifth grade, in particular. Then I took a soldering class in high school. We built a multimeter that I still have and still use, and various other things. And I suddenly discovered and started exploring engineering. Plus, I just like making things.

3. How did your career change from hoping to be an astronaut to being an accomplished materials engineer? 
When I started looking at colleges, that was my primary interest: What school would help me become an astronaut the quickest. I applied to Georgia Tech as an aerospace engineer, but was admitted as an undecided engineering candidate instead. It was the best thing that could have happened. Later, I got hired as an undergrad by a professor who was doing space-grown gallium arsenide on the Space Shuttle. Ultimately, they offered me a graduate position. I accepted, because I knew you needed an advanced degree to be an astronaut — and for a civilian, a Ph.D. in a relevant career such as materials science.

I applied so many times to be an astronaut — every time they opened a call from 1999 until just a few years ago. Never got in. But I was successful at writing proposals and teaching. So I started doing space vicariously through my students, writing research proposals on energy capture, such as solar cells; energy storage, such as super capacitors; and energy delivery like electron emission. They’re all enabled by engineered materials.

4. What makes Georgia Tech and GTRI a key contributor to the future of humans and science in space? 
Georgia Tech offers us so many unfair advantages over our competition. The equipment we’ve got. The students. You’ve got the curiosity-driven basic research coupled with the GTRI applied research model. We’ve had VentureLab and CREATE-X. Now we’ve got Quadrant-i to foster spinout companies from research.  

5. One of your solar cell technologies is headed to the Smithsonian National Air & Space Museum. What is it? 
Early in my career, we developed a way to texture thin film photovoltaics to allow for light trapping. Inverted pyramids are etched into silicon wafer-type solar cells so a photon of light has a chance to hit different surfaces and get absorbed. But thin film solar cells typically don’t etch well. I thought we could use carbon nanotubes to form a scaffolding, a structure like rebar. It’s mechanically reinforcing, but also electrically conductive. We coat the thin film solar cell material over the carbon nanotube arrays. You’ve got these towers, and you get this photon pinballing effect. Most solar cells perform best when perpendicular to the sun, but with mine, off angles are preferred. That’s great for orbital uses, because the faces and solar panels of spacecraft are frequently off-angle to the sun. And then you don’t have the complexity of mechanical systems adjusting the solar arrays. So, we got funding to demonstrate these solar cells on the International Space Station three times, and those are some of the cells we provided to the Smithsonian. 

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