Microdroplet three-dimensional printing system and method based on pulse laser drive

Abstract

The invention provides a microdroplet three-dimensional printing system based on pulse laser drive. The microdroplet three-dimensional printing system comprises a light beam subsystem, a supporting medium, a block thin film array, a microdroplet array and a receiving substrate. Pulse laser is irradiated to the block thin film array on the surface of the supporting medium through the light beam subsystem; the pulse laser drives the melted or unmelted block thin film array to fly away from the surface of the supporting medium, and the flying microdroplet array is formed to deposit on the receiving substrate. By continuously irradiating the block thin film array, and controlling the dropping point where the microdroplet array deposits on the receiving substrate, a three-dimensional microstructure is printed in parallel. Broken droplets can be prevented from being generated in the process that the laser drives a microdroplet printing structure, the range of a printing process window can be effectively expanded, and the printing efficiency can be effectively improved.

Description

technical field [0001] The present invention relates to the technical field of laser micro-nano additive manufacturing, in particular to a microdrop three-dimensional printing system and method based on pulsed laser drive. Background technique [0002] Laser induced transfer, based on the high controllability of pulsed laser time and space, utilizes the mechanothermal effect produced by pulsed laser irradiation on the surface of the supporting medium to drive the film away and deposit it on the receiving substrate to form a three-dimensional microstructure. It is a micro-nano additive manufacturing process with no nozzle, high material adaptability and high resolution. It has incomparable advantages in 3D microstructure printing of opaque materials. [0003] Obtaining smaller and more stable droplets is the key to high-resolution printing of three-dimensional microstructures, and the diameter of the droplets is determined by the thickness of the film and the size of the lase...

AI Technical Summary

Problems solved by technology

However, the disadvantage of this existing technology is that it still cannot achieve both resolution and efficiency, and even if the edge of the printed shape is precisely processed, it still cannot solve the problem of broken droplets in the process of microdroplet printing structure.

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