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Abstract <p>The article presents results of studying the formation processes of the composite material based on Ni nanostructures arrays, nanopillars or nanotubes embedded in thin porous anodic alumina by electrochemical deposition. Ni nanopillars were formed in the direct current mode (<i>dc-</i>deposition); nanotubes, in the alternating current mode (<i>ac-</i>deposition). Morphology analysis of these nanostructures shows that inner profile of the deposit and micromorphology of the nanostructure change with deposition duration and depend on the motion mode and diameter of hydrogen bubbles released under Ni electrodeposition. The morphology, structure, and electrochemical properties of the obtained composite materials were studied using scanning electron microscopy, atomic force microscopy, X-ray diffraction analysis, and the method of linear polarization in potentiodynamic mode. The obtained nanostructures can be used to fabricate planar electrodes for electrochemical biosensors and another nanodiagnostics and microelectronics devices.</p>

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Formation of Nickel-Based Composite Magnetic Nanostructures for Microelectronics and Nanodiagnostics Devices

  • 期刊论文

  • 发表日期：

    2025年2月1日

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  • A. I. Vorobyova,
  • D. I. Tishkevich,
  • E. A. Outkina,
  • A. A. Khodin

摘要

Abstract

The article presents results of studying the formation processes of the composite material based on Ni nanostructures arrays, nanopillars or nanotubes embedded in thin porous anodic alumina by electrochemical deposition. Ni nanopillars were formed in the direct current mode (dc-deposition); nanotubes, in the alternating current mode (ac-deposition). Morphology analysis of these nanostructures shows that inner profile of the deposit and micromorphology of the nanostructure change with deposition duration and depend on the motion mode and diameter of hydrogen bubbles released under Ni electrodeposition. The morphology, structure, and electrochemical properties of the obtained composite materials were studied using scanning electron microscopy, atomic force microscopy, X-ray diffraction analysis, and the method of linear polarization in potentiodynamic mode. The obtained nanostructures can be used to fabricate planar electrodes for electrochemical biosensors and another nanodiagnostics and microelectronics devices.