Micro-nano scale 3D printer and method

Abstract

The invention discloses a micro-nano scale 3D printer and a method. The 3D printer comprises a spraying head set, a printing tool, a controller and a three-dimensional movement mechanism. The spraying head comprises a plurality of spraying heads, and each spraying head applies a high-voltage pulse power supply between a corresponding electric conductive nozzle and an electric conductive base plate. Fluids are pulled from the nozzles by utilizing strong electric field force formed between the nozzles and the base plate to form Taylor Cones and stable conic jet flows. The controller controls the three-dimensional movement mechanism to drive the spraying head set and the printing tool to move relatively and meanwhile controls the movement of all the spraying heads to conduct micro-droplet spray printing on preset positions of the base material on the printing tool, and a model material, a release material and a supporting material are printed sequentially. Based on electrofluid power spraying printing (namely electric spraying printing), the micro-nano scale 3D printer solves the difficult problems that for micro-nano 3D printing, macro / micro cross-scale manufacturing cannot be achieved, the types of printable materials are few, and support is difficult to remove, and especially overcomes the deficiencies and the limitation, in the aspects of the cost, materials, resolution ratio, macro / micro cross-scale manufacturing, support removing and the like, of the of the current micro-nano scale 3D printing technology.

Description

technical field [0001] The invention belongs to the technical field of additive manufacturing and micro-nano manufacturing, and in particular relates to a micro-nano-scale 3D printer and a method thereof. Background technique [0002] Micro-nano electromechanical systems, biomedicine, tissue engineering, new materials (metamaterials, lightweight materials, composite materials, photonic crystals, functionally graded materials, etc.), new energy (solar cells, micro fuel cells, etc.), high-definition display, microfluidics Control devices, micro-nano optical devices, micro-nano sensors, micro-nano electronics, biochips, wearable electronics, embedded electronics, optoelectronics, and flexible electronics have huge industrial demands for complex three-dimensional micro-nano structures. However, the existing micro-nano manufacturing technologies are difficult to meet the needs of industrial applications for high-efficiency, low-cost mass-manufacturing of complex three-dimensional...

AI Technical Summary

Problems solved by technology

[0004] However, the existing various micro-nano-scale 3D printing processes face some shortcomings and certain limitations.

For example, the printing material of micro-stereolithography is single, and the resolution is low, especially for the structure that must support the material, it is difficult to print; although the resolution of two-photon polymerization laser direct writing is very high, the size of the printing material and the formed part is limited, and it cannot be realized. Manufactured across macro / micro scales and at very high cost

In particular, the existing micro-nano 3D printing still faces the problem of difficult support removal

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