Manufacturing and controlling method of flexible micro-driver for controlling micro-nano particles

Abstract

A manufacturing and controlling method of a flexible micro-driver for controlling micro-nano particles includes the steps of manufacturing a patterning template of magnetic micro-nano particles, coating the surface of a nonmagnetic substrate with polymers, making the polymers make contact with and embedded in the micro-nano particles on the surface of the patterning template to lift the patterning template and stretch the polymers into a mushroom-shaped micro-nano column array, heating the patterning template to make the patterned magnetic micro-nano particles disengaged from a hydrosol adhesion layer to obtain a flexible mushroom-shaped micro-nano column array with magnetic micro-nano particles at the top end, namely, the flexible micro-driver, making to-be-controlled micro-nano particles drip onto the surface of the flexible mushroom-shaped micro-nano column array, adjusting and controlling the position and the horizontal / vertical movement speed of a magnet under the nonmagnetic substrate so that the translation, grabbing and jumping of the micro-nano particles can be controlled, and adjusting and controlling the positions and rotating speeds of a pair of magnets on the nonmagnetic substrate so that the rotating of the micro-nano particles can be controlled. The flexible micro-driver is easy to manufacture and good in controllability.

Description

technical field [0001] The invention belongs to the technical field of micro-nano manufacturing, and in particular relates to a method for manufacturing and controlling a flexible micro-actuator for manipulating micro-nano particles. Background technique [0002] At present, the methods for manipulating micro-nano particles mainly include: acoustic manipulation based on surface acoustic waves, atomic force microscopy, dielectrophoresis, photophotography, and piezoelectric transducers. Among them, the acoustic manipulation method based on surface acoustic waves mainly uses the particles in the sound field to produce reflection, refraction, absorption and other effects on the sound waves, so that the momentum carried by the sound field is exchanged between the sound waves and the particles, and then the particles are affected by the force to make them move. Be manipulated. Based on the atomic force microscope method, the manipulation of micro-nano particles is realized by mea...

AI Technical Summary

Problems solved by technology

[0003] At present, there are the following problems in the manipulation method of micro-nano particles: based on the surface acoustic wave acoustic control method, the preparation of micro-nano interdigitated electrodes is required, the process is complicated, and the cost is high; based on the atomic force microscopy method, since scanning and imaging cannot be performed simultaneously , resulting in low operating efficiency of the atomic force microscope, and it is difficult to realize large-scale batch nano-operation; the disadvantage of dielectrophoresis is that its electrodes need to be individually designed according to different manipulation purposes, and the preparation process of metal physical electrodes is complicated, time-consuming, and high-cost; optical tweezers technology Capable of manipulating nanoparticles with high precision

However, due to the limitations of light wave characteristics, it cannot manipulate objects in non-transparent media. At the same time, the thermal effect brought by the strong light field can easily cause photodamage to biological tissues, and the optical system structure is more complex and the optical path is not easy to miniaturize and integrate. Piezoelectric The transducer requires piezoelectric materials and high cost, which severely restricts the functional reliability of the devices required to manipulate micro-nanoparticles

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