The potential implications/applications of printing technologies are being recognized worldwide across different disciplines and industries. Printed magnetoactive smart materials, whose physical properties can be changed by the application of external magnetic fields, are an exclusive class of smart materials that are highly valuable due to their magnetically activated smart and/or multifunctional response. Such smart behavior allows, among others, high speed and low-cost wireless activation, fast response, and high controllability with no relevant limitations in design, shape, or dimensions. Nevertheless, the printing of magnetoactive materials is still in its infancy, and the design apparatus, the material set, and the fabrication procedures are far from their optimum features. Thus, this review presents the main concepts that allow interconnecting printing technologies with magnetoactive materials by discussing the advantages and disadvantages of this joint field, trying to highlight the scientific obstacles that still limit a wider application of these materials nowadays. Additionally, it discusses how these limitations could be overcome, together with an outlook of the remaining challenges in the emerging digitalization, Internet of Things, and Industry 4.0 paradigms. Finally, as magnetoactive materials will play a leading role in energy generation and management, the magnetic-based Green Deal is also addressed.

中文翻译：

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磁性材料：从寻找北方到令人兴奋的印刷未来的旅程

印刷技术的潜在影响/应用正在全球不同学科和行业中得到认可。印刷磁活性智能材料，其物理特性可以通过施加外部磁场来改变，是一类独特的智能材料，由于其磁激活智能和/或多功能响应而具有很高的价值。这种智能行为允许高速和低成本的无线激活、快速响应和高度可控性，而在设计、形状或尺寸方面没有相关限制。尽管如此，磁活性材料的印刷仍处于起步阶段，设计设备、材料组和制造程序还远未达到其最佳特点。因此，本综述通过讨论该联合领域的优缺点，提出了允许将印刷技术与磁活性材料互连的主要概念，试图突出目前仍然限制这些材料更广泛应用的科学障碍。此外，它还讨论了如何克服这些限制，以及对新兴数字化、物联网和工业 4.0 范式中剩余挑战的展望。最后，由于磁活性材料将在能源生产和管理中发挥主导作用，因此还解决了基于磁性的绿色交易。试图突出当今仍然限制这些材料更广泛应用的科学障碍。此外，它还讨论了如何克服这些限制，以及对新兴数字化、物联网和工业 4.0 范式中剩余挑战的展望。最后，由于磁活性材料将在能源生产和管理中发挥主导作用，因此还解决了基于磁性的绿色交易。试图突出当今仍然限制这些材料更广泛应用的科学障碍。此外，它还讨论了如何克服这些限制，以及对新兴数字化、物联网和工业 4.0 范式中剩余挑战的展望。最后，由于磁活性材料将在能源生产和管理中发挥主导作用，因此还解决了基于磁性的绿色交易。