Nozzle of electrohydrodynamics coaxial-printed polymer metal composite metamaterial

Abstract

The invention discloses a nozzle of an electrohydrodynamics coaxial-printed polymer metal composite metamaterial. The nozzle is characterized in that an inner core is arranged in an outer shell; an insulation cavity is formed between the inner core and the outer shell; the outer shell is provided with an insulation liquid inlet and an insulation liquid outlet communicating with the insulation cavity; a spraying mouth is arranged in the bottom center of the outer shell, and is connected with a high-voltage electrode; a metal melt inlet channel, a polymer inlet channel and a metal melt outlet runner and a polymer outlet channel respectively pointed to the spraying mouth are formed on the inner core; the metal melt inlet channel communicates with the metal melt outlet runner; and the polymer inlet channel communicates with the polymer outlet channel. The nozzle has the following advantages: insulation liquid is filled in the insulation cavity to satisfy high-temperature condition in the printing process to prevent curing of molten-state material; and meanwhile, a metal melt and a polymer melt are directly filled in the spraying mouth for spraying under the effect of a high-voltage electric field of the high-voltage electrode without needing solvent auxiliary, so that the jet process is controlled more easily.

Description

technical field [0001] The invention relates to an electrohydrodynamic printing technology, in particular to a nozzle for electrohydrodynamic coaxial printing of polymer-metal composite metamaterials. Background technique [0002] Electromagnetic metamaterials are composite materials that contain metal structures in polymer materials (the size of the unit cell is much smaller than the wavelength of its interaction, about less than 1 / 10, generally smaller than the micron scale, preferably at the scale of 10-100 nm), By changing the structural parameters of the metal unit cell, its electromagnetic properties can be adjusted, thereby regulating the propagation of electromagnetic waves in space. It is a new type of microwave material that can be used in functional devices such as antennas. application prospects. With the advancement of science and technology, the fabrication of metamaterials and functional devices based on electrohydrodynamic printing of polymer-metal composite...

AI Technical Summary

Problems solved by technology

In the existing coaxial melt electrospinning technology, the melt passes through a coaxial core inner and outer capillary, a certain gap is maintained between the two tube layers, the outer layer liquid and the core liquid flow between the two tube layers respectively, and finally The ends of the capillary converge, but the two materials used are polymer materials, which are not suitable for the preparation of composite metamaterials. The method of preparing metal-polymer composite metamaterials by electrohydrodynamic methods has not yet been reported.

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