3D printing(Additive manufacturing) technology is electronics, optics,
energy
,robot technology,
biology
Manufacturing processes in the fields of engineering and sensing provide new methods.Micro scale3D printingThe micro- and nano-structural properties of the product make its application possible. However, the choice of materials (polymer-metal mixtures, rheological inks, etc.) and the purity of the final structure are two important problems faced by existing 3D nanometal printing technologies. Aerosol lithography has previously been used to assemble high-purity three-dimensional metal nanostructure arrays on pre-patterned substrates, but its geometry is limited.
In order to solve the above problems, researchers at Seoul National University in South Korea developed a direct3D printingA variety of metal material nanostructure array technology, the printed structure has a flexible geometric shape and a small feature size of hundreds of nanometers. Printing in a dry environment does not require polymers or inks. Ions and charged aerosol particles are directed onto a dielectric mask that contains a set of holes floating on a biased silicon substrate. Ions gather around each hole, creating an electrostatic lens, focusing the charged aerosol particles into a nano-scale jet.These jets are guided by polymerized electric field lines formed under a mask containing holes. The role of this mask is similar to the traditional3D printingThe nozzle of the machine can transfer aerosol particles3D printingTo the silicon base.
By moving the receiving substrate during the printing process, various 3D structures were successfully printed, including spirals, suspended nanopillars, rings and letters. In addition, in order to demonstrate the potential applications of related technologies, we printed a set of vertical opening resonator structures.Through and other3D printingWith the combination of methods, this technology is expected to make significant progress in nanomanufacturing.
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