Reconfigurable micro-nano structure based on liquid-gas phase change material and manufacturing and control methods

Abstract

The invention discloses a reconfigurable micro-nano structure based on liquid-gas phase change material and manufacturing and control methods. The reconfigurable micro-nano structure comprises a support structure forming a micro-nano structure main body, and a reconfigurable functional joint connected with the support structure. The reconfigurable functional joint is of a capsule structure and isformed in the mode that elastic functional material wraps the liquid-gas phase change material. The support structure is a micro-nano-dimension two-dimensional or three-dimensional complex structure.According to the manufacturing method, numerical control codes controlling a structuralization template or a receiving platform to move are written first; and then elastic functional material prepolymer solution and the liquid-gas phase change material are put into different numerical control extrusion devices correspondingly at corresponding temperatures, extrusion speeds of the elastic functional material prepolymer solution and the liquid-gas phase change material are adjusted correspondingly, and the reconfigurable micro-nano structure is printed. According to the control method, the reconfigurable micro-nano structure is heated or cooled, liquid-gas phase change occurs to the inside liquid-gas phase change material, and the reconfigurable functional joint is driven by volume expansionto complete specified deformation. The reconfigurable micro-nano structure based on the liquid-gas phase change material and the manufacturing and control methods have high manufacturing precision, repeated deformation and other advantages.

Description

technical field [0001] The invention belongs to the technical field of micro-nano manufacturing, and in particular relates to a reconfigurable micro-nano structure based on a liquid-gas phase change material and a manufacturing and manipulation method. Background technique [0002] The application of reconfigurable micro-nano structures is becoming more and more widespread. Compared with traditional structural materials and driving methods, reconfigurable micro-nano structures have optical, electrical, thermal, and magnetic drive functions, shape memory functions, and programmable design functions. Drive structure The size of the driving unit is small, and its drivability, controllable and precise deformation, repeatability and programmable design endow this kind of material with unlimited possibilities and broad application prospects. Three-dimensional micro-nano structures and reconfigurable materials have great application prospects in the fields of ultra-lightweight aero...

AI Technical Summary

Problems solved by technology

However, the newly proposed three-dimensional direct writing manufacturing method of structured template micro-nano complex structures of functional materials is induced by structured templates to manufacture micro-nano three-dimensional complex structures, and there are problems that the structure cannot be driven or driven inaccurately, and complex deformation cannot be completed.

[0003] At present, the conventional micro-nano structure manufacturing technology, such as optical lithography, electron beam etching, interference lithography, laser micromachining, soft light, nanoimprint lithography and other micro-nano manufacturing technologies, has a great impact on the manufacture of reconfigurable structures. , limited by the high selectivity of the process to materials, mainly relying on single-functional materials, such as reconfigurable hydrogels, dielectric elastic materials, shape memory alloys, thermal bimetallic sheets, etc., have low manufacturing precision and poor control precision , Programmable low complexity, limited application scope and inability to realize macro-micro integrated manufacturing, etc.

In terms of the range of materials to be processed, it is mainly suitable for a single material of a single polymer or metal, and it is difficult to realize the combination of multiple functional materials in manufacturing, and it is impossible to achieve the unity of functionality and structure.

In addition, the existing micro-nano manufacturing methods also face problems such as expensive equipment and mask plates (or molds), high manufacturing costs, long cycle times, and low processing efficiency.

[0004] At present, there are very few studies on micro-nano structure drive. Usually, gas drive, thermal drive, electric drive, etc. are selected according to the materials and structures used. In terms of drive effect, compared with traditional mechanical motor drive and gear drive etc., the driving force is small, the driving precision is poor, the controllability is poor and the control complexity is low, and it is impossible or difficult to realize large-scale driving and deformation, and the driving method is too dependent on the choice of materials and has poor adaptability to the environment. Difficult to truly realize industrialization and apply to actual industrial production and manufacturing

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