Preparation and use of micron-scale magnetic tweezers

Abstract

The invention discloses a method for preparing and using micron-scale magnetic tweezers. It includes the following steps: 1) drop particle-filled (magnetic particles wrapped in non-magnetic substances) nanocomposite resin onto the template substrate, and the resin penetrates into the cavity of the template substrate to form product I; 2) apply a magnetic field, and the magnetic particles in the resin Redistribute to form Product II; 3) Use light to cure the resin that is not blocked by the photomask to form Product III, and obtain cured micropillars I; 4) Exchange the magnetic poles, redistribute the magnetic particles, and then solidify to form Product IV to obtain The solidified microcolumn II; 5) peeling the product IV from the template substrate to obtain the microcolumn III mixed and distributed; 6) applying a parallel magnetic field to the microcolumn III to achieve the effect of micro tweezers. The micro tweezers prepared by the invention can pick up micron-sized particles, and the micro tweezers can be reused by applying and removing the magnetic field. In addition, the resin is filled with magnetic particles, and its hardness and rigidity are also greatly improved.

Description

Technical field[0001]The present invention relates to the technical field of functional composite materials, and more particularly to the preparation and use of micron-scale magnetic forceps.Background technique[0002]The forceps are a tool for clipping the bolt, metal particles, hair, fine thorn and other fine things, but with the decrease of the diameter of the tile, the difficulty of completing the operation of the macro tweezers is greatly increased. It is necessary to use micro-tweezers to take the micro-nanometer level item.[0003]Micro-operation technology not only has an important role in micro-electrical assembly, but also is also increasingly valued in many other fields, such as medical hygiene, and the most research is the tip-type microcontroller. The microsermate for earlier production is The micro-electric power driven by the silicon process is used. The size and operating accuracy of the microtor is reduced to the nanotubes of the nanotubes are bike nanotubes. However, ...

AI Technical Summary

Problems solved by technology

But as far as the actual needs at this stage are concerned, the more important thing is the research on micromanipulators that can manipulate micron-scale objects, so people think of micro-tweezers made of single-arm carbon fibers, which can pick up micron-scale substances, but The above micro-tweezers are troublesome to make and require sophisticated instruments to operate

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