Successful 3D printing in space. Free Technical Library News

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Successful 3D printing in space

15.05.2020

Aboard an experimental manned spacecraft launched into low-Earth orbit on May 6 using the Long March 5B (Long March 5B) launch vehicle, the first successful 3D printing in space based on composite materials was achieved.

China's new Long March-5B launch vehicle, or Long March-5B, has made its maiden flight, sending a test version of China's next-generation manned spacecraft and a payload return capsule into space for testing.

According to China Central Television, this time the new-generation experimental manned spacecraft was equipped with a "space-based composite 3D printing system."

This is the first space 3D printing experience in China, as well as the first international 3D printing experiment of solid fiber-reinforced composite materials.

During the flight, the system achieved the printing of solid fiber-reinforced composite materials, and also achieved the experimental scientific goal of 3D printing in microgravity.

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Aerosol with nanobots 03.08.2018

Scientists from the Massachusetts Institute of Technology have created the world's first aerosol containing nanobots. The discovery could radically change the development of robotics. These nanobots can do almost everything from detecting dangerous leaks in pipes to diagnosing health problems.

Each sensor in an aerosol spray consists of two parts. The first is a colloid, a tiny insoluble particle or molecule. Colloids are so small that they can float in air or water forever - the force of the particles colliding around them is greater than the force of gravity.

The second part is a complex circuit consisting of a chemical detector built from a two-dimensional material like graphene. When this sensor encounters a certain chemical in the environment, its ability to conduct electricity is enhanced. The circuit also features a photodiode, a device capable of converting light around it into electrical current. It provides the system with the energy needed to collect data and the nanobot's memory.

The researchers grafted the circuit onto colloids, thus giving the latter the ability to travel in unique environments. After combining, the scientists gave the nanobots the form of a spray, that is, they can now be sprayed. This delivery method would not be possible without colloids. "The circuits couldn't exist without a substrate," says study lead author Michael Strano. "We had to embed the circuits into the particles to give the system strength and also make it big enough for the bots to travel with the flow."

What are these nanobots for? Scientists have demonstrated several ways to use them. For example, they designed sensors to detect poisonous ammonia and tested this ability in a section of pipe. They sprayed the sensors from one end and collected them from the other with gauze. By analyzing the information in the diagrams, they were able to tell if the sensors had come into contact with ammonia.

In the real world, the technology could save inspectors the trouble of inspecting the entire pipe from the outside by simply spraying nanobot aerosols down there.

The same technology can help diagnose diseases in the human body by traveling through the digestive tract, collecting information and delivering it to doctors.

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