Liquid surface micro-component transfer method and device based on magnetic-driven micro-robot

Abstract

The invention relates to a method and a device for conveying a micro-component on a liquid surface based on a magnetic drive microrobot, and relates to the field of microoperation control. The invention aims to provide the microrobot with a simple structure, the device convenient to operate, and the conveying method convenient to control which are used for conveying the micro-component on the liquid surface. Three pairs of orthorhombic Helmholtz coils are utilized for producing a rotating magnetic field, so that the microrobot is controlled to operate the micro-component on the liquid surfaceto accomplish movement. By utilizing a horizontal capillary force between the microrobot and an operation object, the operation object can be captured by the robot. By applying the rotating magnetic field to drive the microrobot, the micro-component moves along with the robot. Through changing a direction of a rotary shaft of the magnetic field, a movement direction of the microrobot can be changed; and through changing a rotating frequency of the magnetic field, the traveling speed of the microrobot can be changed. Through adjusting the rotating frequency and an axis direction of the magneticfield, with the help of a magnetic field gradient, the micro-component can be separated from the microrobot.

Description

technical field [0001] The invention relates to the field of micro-operation control, in particular to a device and method for transporting micro-components on a liquid surface based on a magnetic-driven micro-robot. Background technique [0002] With the development of micro-nano technology, micro-robots have been widely concerned and developed rapidly. Micro-robots have broad application prospects in the fields of micro-nano manufacturing, targeted drug delivery, minimally invasive surgery, and bioengineering. Facing the needs of in vivo medical treatment, chemical analysis and other fields, a lot of research has been carried out on microrobots in liquids. Various drive methods and control strategies for microrobots in liquid environments have been proposed, and related applications have been further expanded. However, there are still some applications, such as water quality monitoring, biological experiments, pollutant treatment, etc., that require microrobots working on ...

AI Technical Summary

Problems solved by technology

However, most of the liquid surface micro-robots studied at present are water strider-like structures, which are large in size and are not suitable for manipulating micro-components.

In addition, at present, there is no reliable and efficient method for the transfer and motion control of micro-components on the liquid surface, and it is impossible to complete the high-precision operation of micro-components on the liquid surface.

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