A method for preparing reconfigurable ultramicroelectrodes with controllable morphology based on magnetic field driving

Abstract

The method of preparing reconfigurable ultramicroelectrodes with controllable morphology based on magnetic field drive first prepares a substrate with a micron groove array and a liquid storage tank; selects a low-melt alloy material as the electrode material, and adds iron powder; the substrate is placed in the storage tank. In the liquid tank, add hydrochloric acid solution into the liquid storage tank, and inject liquid low-melting alloy on the groove of the substrate; the motion control platform controls the permanent magnet to rise to be in contact with the liquid storage tank, and align the permanent magnet with the low-melting alloy droplet. The permanent magnet moves according to the pre-designed electrode pattern, and the low-melting alloy droplet is driven by the permanent magnet to form the electrode pattern; the substrate is taken out from the liquid storage tank, cooled, and the shape-controllable reconfigurable ultramicro Electrode; the reconfigurable ultramicro electrode is heated, the reconfigurable ultramicro electrode is melted, and the permanent magnet is used to absorb the low-melt alloy droplet from the substrate, that is, the reconstruction of the low-melt alloy reconfigurable ultramicro electrode is completed; the present invention can The electrode with complex pattern shape is manufactured, the preparation method is simple, and the electrode material can be recycled.

Description

technical field

[0001] The invention belongs to the technical field of ultramicroelectrode preparation, in particular to a method for preparing a shape-controllable reconfigurable ultramicroelectrode based on magnetic field driving. Background technique

[0002] Ultramicro electrode refers to a microelectrode with a one-dimensional size of less than 25 microns. With its micron or nanoscale scale, ultramicro electrodes exhibit many excellent characteristics different from conventional electrodes, such as fast mass transfer rate and high current density. Due to the many excellent properties of ultramicroelectrodes, they have broad prospects in single-cell analysis, electrochemical biosensing, and electrocatalysis.

[0003] With the development of micro-nano manufacturing technology, more and more lightweight, miniaturized and flexible wearable electronic devices have been researched and developed. In these micro-nano electronic devices, electrical Interconnection, ultra-micro...

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