Take a look at the latest news on microscopic 3D printing: by the German Graz University of Technology, the Graz Electron Microscope Center, the Karl-Franzens University Institute of Physics in Austria, the Oak Ridge National Laboratory (ORNL) Nanomaterials Science Center, and the Tennessee University in the United States A team of five academics from the Department of Materials Science and Engineering has developed a new direct-write technology, and for the first time realized the 3D printing of nano-scale pure gold structures on demand on surfaces and materials of arbitrary shapes.
This is undoubtedly a major breakthrough. It is important to know that pure nano-scale gold structures can effectively help improve sensors, computers, information storage technologies and light sources, and can also be used to improve the plasma transmission process. And according to Antarctic bears, this new technology not only does not require the use of masks, it is also very economical and fast.
For the molding process of this new technology, the team described in the paper "Direct Plasma 3D Nanoprinting of Plasma Structures" (click to view) that has been published in "ACSApplied Materials & Interfaces" magazine: We will include surface-binding molecules containing carbon and gold, It is transformed into a gas phase in a patterned sequence, and then it is accurately deposited to a predetermined position with a focused electron beam, and a 3D shape is finally obtained. This process is similar to the previous technology of 3D printing of pure gold using electron beams at the Technical University of Vienna. Next, the team put the printed structure into the growth reactor, and removed the carbon atoms through water vapor, and finally obtained a highly pure gold structure. After that, they tested the plasma behavior of the structure.
This new technology can truly realize the on-demand production of customized nanostructures, and for the first time realized one-dimensional, two-dimensional and three-dimensional maskless manufacturing on any surface shape and material—even materials with plasmon behavior. Compared with traditional technology, plasmon oscillation can actually encode more data, which helps to improve sensor equipment, new light sources and extremely dense information storage technology. 
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