NASA | Blacker Than Black

John Hagopian, an optical physicist at NASA Goddard, discusses the use of carbon nanotubes in enhancing scientific instruments for space flight. These nanotubes, grown using catalyst-assisted chemical vapor deposition, are extremely small and require electron microscopes for visualization. They are used to improve light absorption in telescopes, making them ten times darker than current black paints, thus increasing data efficiency. The nanotubes are robust, adhering well to substrates, and undergo rigorous testing for space conditions. They are also used in commercial products like sporting goods. The technology is close to being qualified for spaceflight use.

What is the primary method used to grow carbon nanotubes as mentioned in the video?

• Laser ablation

• Catalyst assisted chemical vapor deposition

• Arc discharge

• Electrochemical deposition

How do carbon nanotubes improve the performance of space telescopes?

• By reducing data contamination through better light absorption

• By enhancing the telescope's color resolution

• By increasing the telescope's weight

• By making the telescope more compact

What structural feature of the carbon nanotubes contributes to their effectiveness in absorbing light?

• Their high density

• Their multiwalled and oriented nature

• Their single-walled structure

• Their reflective surface

What is a key factor in ensuring the robustness of carbon nanotubes for space applications?

• Ensuring they adhere well to the substrate

• Applying a protective coating

• Increasing their length

• Using a thicker substrate

In addition to space technology, where else have carbon nanotubes been applied commercially?

• In sporting goods like bicycle frames and tennis rackets

• In the automotive industry

• In home appliances

• In the fashion industry