基于铁磁流体的磁图型：由UV交联稳定的迷宫和尖峰结构

IF 3 3区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Journal of Magnetism and Magnetic Materials Pub Date : 2025-09-18 DOI:10.1016/j.jmmm.2025.173509

Laura M. Sanchez

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引用次数: 0

摘要

由于外加磁刺激的作用，铁磁流体中图案的形成已经进行了几十年的实验和数值研究。然而，这些研究大多是在考虑疏水或超疏水底物表面的情况下进行的，并且所获得的图案不是永久性的。本研究采用了亲水玻璃表面和基于fe2o3的铁磁流体体系。首先，研究了磁浮浓度对得到的图案的影响。然后，通过固定磁性纳米颗粒的浓度，考虑改变外磁场强度的影响。根据不同的工作条件，可以得到迷宫状和尖峰状的图案。确定并讨论了从一种体系结构切换到另一种体系结构的关键参数。此外，由于在初始铁磁流体混合物中简单添加环氧光刻剂，每个获得的图案都是通过紫外线照射永久固定的。所提出的结果为开发新的和更复杂的材料提供了希望。

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Ferrofluid-based magnetic patterning: Labyrinthine and spikes structures stabilized by UV crosslinking

The pattern formation in ferrofluids because of the application of an external magnetic stimulus has been experimentally and numerically studied for decades. However, most of these studies have been conducted considering hydrophobic or super-hydrophobic substrates surfaces, and the obtained patterns were not permanent. In this research a hydrophilic glass surface and a Fe₂O₃-based ferrofluid system were used. First, the influence of the magnetic suspension concentration on the obtained pattern was studied. Then, by fixing the magnetic nanoparticles concentration the effect of varying the external magnetic strength was considered. Depending on the working conditions, labyrinthine-like and spikes patterns were obtained. The critical parameters to switch from one to the other architecture were determined and discussed. Furthermore, each obtained pattern was permanently fixed through the employment of UV-irradiation thanks to the simple addition of an epoxy photoresist reactant to the initial ferrofluid mixture. The results presented are promising for the development of new and more complex materials.

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来源期刊

Journal of Magnetism and Magnetic Materials 物理-材料科学：综合

CiteScore

5.30

自引率

11.10%

发文量

1149

审稿时长

59 days

期刊介绍： The Journal of Magnetism and Magnetic Materials provides an important forum for the disclosure and discussion of original contributions covering the whole spectrum of topics, from basic magnetism to the technology and applications of magnetic materials. The journal encourages greater interaction between the basic and applied sub-disciplines of magnetism with comprehensive review articles, in addition to full-length contributions. In addition, other categories of contributions are welcome, including Critical Focused issues, Current Perspectives and Outreach to the General Public. Main Categories: Full-length articles: Technically original research documents that report results of value to the communities that comprise the journal audience. The link between chemical, structural and microstructural properties on the one hand and magnetic properties on the other hand are encouraged. In addition to general topics covering all areas of magnetism and magnetic materials, the full-length articles also include three sub-sections, focusing on Nanomagnetism, Spintronics and Applications. The sub-section on Nanomagnetism contains articles on magnetic nanoparticles, nanowires, thin films, 2D materials and other nanoscale magnetic materials and their applications. The sub-section on Spintronics contains articles on magnetoresistance, magnetoimpedance, magneto-optical phenomena, Micro-Electro-Mechanical Systems (MEMS), and other topics related to spin current control and magneto-transport phenomena. The sub-section on Applications display papers that focus on applications of magnetic materials. The applications need to show a connection to magnetism. Review articles: Review articles organize, clarify, and summarize existing major works in the areas covered by the Journal and provide comprehensive citations to the full spectrum of relevant literature.